Tuesday, June 30, 2020
Monday, June 29, 2020
P_Turn
One of the standard graphics achievements in animation is
a book with turning pages. There are many fine examples on
YouTube; I would guess,using tools from the Adobe suite.
But what can be done on synfig? Below, simply using the mirror tool.
Going to need to tinker with this one...
a book with turning pages. There are many fine examples on
YouTube; I would guess,using tools from the Adobe suite.
But what can be done on synfig? Below, simply using the mirror tool.
Going to need to tinker with this one...
EELV
There was a high degree of abstentions Sunday - 58,4% - for the
second and decisive round of municipal elections in France. This
proved an opportunity for the election of Green candidates in a number
of important cities, including Lyon and Strasbourg. In Paris, Anne Hidalgo
of the Socialists swept through again in a coalition with the Left and the
Greens.
EELV is an electoral coalition of Greens that run in local and European elections.
https://www.liberation.fr/apps/2020/06/carte-interactive-municipales/
Congratulations to all! 🐱🐉
second and decisive round of municipal elections in France. This
proved an opportunity for the election of Green candidates in a number
of important cities, including Lyon and Strasbourg. In Paris, Anne Hidalgo
of the Socialists swept through again in a coalition with the Left and the
Greens.
EELV is an electoral coalition of Greens that run in local and European elections.
https://www.liberation.fr/apps/2020/06/carte-interactive-municipales/
Congratulations to all! 🐱🐉
Sunday, June 28, 2020
The Illness
Diabetes is replacing obesity as the illness to watch for...
* * *
On a cheerier note, been reading up on various terms currently popular
in philosophical discourse.
https://www.lefigaro.fr/langue-francaise/quiz-francais/aurez-vous-un-sans-faute-a-ce-test-sur-le-vocabulaire-de-la-philosophie-20200627
Below, looking for ipsity (ipseity).
Article: Ipsity in l'Encyclopédie philosophique.fr
author: Jérome Dôkic, EHESS
translation: GooleTransalte/doxa-louise
Introduction
The etymology of the word "ipseity" suggests the reference to a thing considered as such, or in itself, but contemporary philosophy usually reserves the use for the human person. In this regard, the notion of ipseity is transversal, and concerns several fields of philosophy, including metaphysics, philosophy of mind and philosophy of language. On the metaphysical level, the question concerns personal identity, or what makes that a person is or remains the same, at a given time or over time. One may wonder, for example, whether personal identity differs from the identity of other genera or species of entity, animated or not. For the philosophy of the mind, ipseity refers to the psychological relationship, supposedly privileged, that a person maintains with regard to himself. The question of selfhood is then that of self-awareness, or the various forms in which a person represents or experiences himself. As for the philosophy of language, it uses the notion of ipseity in particular to designate the reflexive forms that language authorizes or imposes, for example the difference that there may be between the formula "Marie saw her reflection in the mirror" and the formula "Maris saw herself in the mirror" which, unlike the first formula, implies that Mary recognized herself in the mirror.
As often happens in philosophy, each area has claimed its theoretical and methodological priority over the other areas. Some metaphysicians consider that the question of personal identity is first in the order of explanation, and that self-awareness can only be understood from a theory independent of what makes a person be or remain identical to itself. On the contrary, a philosopher of the mind can argue that the sense of selfhood must be the starting point for an analysis of selfhood, and that metaphysical questions are secondary, or dependent on psychological questions. For example, John Locke suggested that awareness a subject has of a part of his body "from within" (as a part of itself) is that it is a part of himself (2002, Book II, Ch. 27, Section II): self-awareness determines the ontology of the self. More recently in the history of philosophy, philosophers of language, often inspired by Ludwig Wittgenstein, have denounced the puzzles related to selfhood as illusions of language (or "grammatical" illusions), and considered that a careful analysis of the use of certain verbs and pronouns could be enough to allay most of the philosophical concerns linked to personal identity or self-awareness.
In the history of philosophy, the question of self-awareness has been associated with the knowledge of what we are, that is to say the type of entity to which we belong. This is how René Descartes allowed himself to draw from Cogito , conceived as the quintessential form of self-awareness ("I think, therefore I am"), the conclusion that the subject is not identical to any material body, not even his own (cf. for example Descartes' answers to Pierre Gassendi in the Responses to the fifth objections which follow the Metaphysical Meditations ). Conversely, in the Critique of pure reason, Emmanuel Kant will seek to radically dissociate self-awareness from knowledge of what we really are, by concluding that the nature of the self is unknowable (cf. B158). The relationship between selfhood as self-awareness and knowledge of our own nature is a notoriously complex subject. Today, we cannot approach it without a substantial conception of selfhood and the articulation between the three levels of analysis (linguistic, conceptual and perceptual) which have just been distinguished.
...
* * *
Published on 7/21/2017 | Le Point.fr
author: Sophie-Jahn Arrien, Laval University
translation: Google Translate/doxa-louise
Paul Ricœur (1913-2005) analyzes in many of his texts the great detour that the subject must undertake to return to itself. With this approach, a subject is brought to light which represents more a point of arrival for the philosophical effort than its point of departure. But who is the subject if it is not a purely formal truth? Who is he who finds himself by understanding and interpreting himself? Who am I, that I who says "I"?
To this question, we respond spontaneously by highlighting our character traits, our ways of being, in short, what remains fixed and identifies us as being the same person despite many changes. This form of identity has its limits. Because, strictly speaking, the permanence in time of what I am does not allow us to answer the question "who am I?" ", but rather" what am I? " Ricœur, to counter this shift, proposes to distinguish two types of identity: the first in the sense of idem or "sameness" (idem means "the same" in Latin), and the other rooted in ipse or of oneself (one will then speak of “ipseity”). The same identity applies to any object that remains in time. But if the subject does not simply exist like a chair or a stone, its identity cannot be reduced to that sameness. Rather, it refers to the dimension of selfhood which manifests itself concretely by the voluntary maintenance of self in front of others, by the way in which a person behaves such that "others can count on him". That which illustrates for Ricœur the emblematic figure of the promise in which I first commit who I am and not what I am (it is precisely beyond what I am today that I commit to keep my word).
The two ends of a chain
Ipsity does not, however, substitute for the sameness of the subject, but completes it. And this is where narrative identity comes in, that is to say that which deploys the dialectical relation uniting the poles of the idem and the ipse. This notion, which appears for the first time in Ricœur in the conclusion of Temps et récit(Seuil, 1983-1985), is based on the idea that each individual appropriates, or even constitutes himself, in a constantly renewed narrative of himself. It is not an objective story, but one that, as a writer and reader of my own life, "I" tell about myself. Personal identity is thus formed through the narratives it produces and those it continuously integrates. By doing so, far from freezing in a hard core, the “I” is transformed through its own stories but also through those which are transmitted by tradition or literature which are grafted onto it, never ceasing to restructure the whole of personal history.
"By depictins as a narrative the aim of real life, it gives it the recognizable features of characters loved or respected," writes Ricœur in Soi-même comme autre (Seuil, 1990). The narrative identity brings the two ends of the chain together: the permanence of character over time and the subsistence”. But because it allows several stories as well as their permanent restructuring, it is therefore never perfectly finalized, and because of this, it enriches the ordinary understanding of a person thus conceived of as a character engaged in a narrative struggle against the scattering of lived experiences.
Starting from the notion of ipseity, Ricœur thus leads us to a flexible and dynamic iconcept of dentity which immunizes against the danger of a return, even indirect, towards a "strong" self understood as a hard core. Often used by literary studies, Ricœur's analysis also allows dialogue with political philosophy, in particular that of the Canadian philosopher Charles Taylor who recognizes the interpretative and historical horizon within which the "self" takes source.
* * *
On a cheerier note, been reading up on various terms currently popular
in philosophical discourse.
https://www.lefigaro.fr/langue-francaise/quiz-francais/aurez-vous-un-sans-faute-a-ce-test-sur-le-vocabulaire-de-la-philosophie-20200627
Below, looking for ipsity (ipseity).
Article: Ipsity in l'Encyclopédie philosophique.fr
author: Jérome Dôkic, EHESS
translation: GooleTransalte/doxa-louise
Introduction
The etymology of the word "ipseity" suggests the reference to a thing considered as such, or in itself, but contemporary philosophy usually reserves the use for the human person. In this regard, the notion of ipseity is transversal, and concerns several fields of philosophy, including metaphysics, philosophy of mind and philosophy of language. On the metaphysical level, the question concerns personal identity, or what makes that a person is or remains the same, at a given time or over time. One may wonder, for example, whether personal identity differs from the identity of other genera or species of entity, animated or not. For the philosophy of the mind, ipseity refers to the psychological relationship, supposedly privileged, that a person maintains with regard to himself. The question of selfhood is then that of self-awareness, or the various forms in which a person represents or experiences himself. As for the philosophy of language, it uses the notion of ipseity in particular to designate the reflexive forms that language authorizes or imposes, for example the difference that there may be between the formula "Marie saw her reflection in the mirror" and the formula "Maris saw herself in the mirror" which, unlike the first formula, implies that Mary recognized herself in the mirror.
As often happens in philosophy, each area has claimed its theoretical and methodological priority over the other areas. Some metaphysicians consider that the question of personal identity is first in the order of explanation, and that self-awareness can only be understood from a theory independent of what makes a person be or remain identical to itself. On the contrary, a philosopher of the mind can argue that the sense of selfhood must be the starting point for an analysis of selfhood, and that metaphysical questions are secondary, or dependent on psychological questions. For example, John Locke suggested that awareness a subject has of a part of his body "from within" (as a part of itself) is that it is a part of himself (2002, Book II, Ch. 27, Section II): self-awareness determines the ontology of the self. More recently in the history of philosophy, philosophers of language, often inspired by Ludwig Wittgenstein, have denounced the puzzles related to selfhood as illusions of language (or "grammatical" illusions), and considered that a careful analysis of the use of certain verbs and pronouns could be enough to allay most of the philosophical concerns linked to personal identity or self-awareness.
In the history of philosophy, the question of self-awareness has been associated with the knowledge of what we are, that is to say the type of entity to which we belong. This is how René Descartes allowed himself to draw from Cogito , conceived as the quintessential form of self-awareness ("I think, therefore I am"), the conclusion that the subject is not identical to any material body, not even his own (cf. for example Descartes' answers to Pierre Gassendi in the Responses to the fifth objections which follow the Metaphysical Meditations ). Conversely, in the Critique of pure reason, Emmanuel Kant will seek to radically dissociate self-awareness from knowledge of what we really are, by concluding that the nature of the self is unknowable (cf. B158). The relationship between selfhood as self-awareness and knowledge of our own nature is a notoriously complex subject. Today, we cannot approach it without a substantial conception of selfhood and the articulation between the three levels of analysis (linguistic, conceptual and perceptual) which have just been distinguished.
...
* * *
Published on 7/21/2017 | Le Point.fr
author: Sophie-Jahn Arrien, Laval University
translation: Google Translate/doxa-louise
Ricœur and narrative identity
Who is this "I"? In "Temps et récit", the philosopher evokes an evolving entity that transforms itself through the weaving of tales. Critical analysis of a text.
Paul Ricœur (1913-2005) analyzes in many of his texts the great detour that the subject must undertake to return to itself. With this approach, a subject is brought to light which represents more a point of arrival for the philosophical effort than its point of departure. But who is the subject if it is not a purely formal truth? Who is he who finds himself by understanding and interpreting himself? Who am I, that I who says "I"?
To this question, we respond spontaneously by highlighting our character traits, our ways of being, in short, what remains fixed and identifies us as being the same person despite many changes. This form of identity has its limits. Because, strictly speaking, the permanence in time of what I am does not allow us to answer the question "who am I?" ", but rather" what am I? " Ricœur, to counter this shift, proposes to distinguish two types of identity: the first in the sense of idem or "sameness" (idem means "the same" in Latin), and the other rooted in ipse or of oneself (one will then speak of “ipseity”). The same identity applies to any object that remains in time. But if the subject does not simply exist like a chair or a stone, its identity cannot be reduced to that sameness. Rather, it refers to the dimension of selfhood which manifests itself concretely by the voluntary maintenance of self in front of others, by the way in which a person behaves such that "others can count on him". That which illustrates for Ricœur the emblematic figure of the promise in which I first commit who I am and not what I am (it is precisely beyond what I am today that I commit to keep my word).
The two ends of a chain
Ipsity does not, however, substitute for the sameness of the subject, but completes it. And this is where narrative identity comes in, that is to say that which deploys the dialectical relation uniting the poles of the idem and the ipse. This notion, which appears for the first time in Ricœur in the conclusion of Temps et récit(Seuil, 1983-1985), is based on the idea that each individual appropriates, or even constitutes himself, in a constantly renewed narrative of himself. It is not an objective story, but one that, as a writer and reader of my own life, "I" tell about myself. Personal identity is thus formed through the narratives it produces and those it continuously integrates. By doing so, far from freezing in a hard core, the “I” is transformed through its own stories but also through those which are transmitted by tradition or literature which are grafted onto it, never ceasing to restructure the whole of personal history.
"By depictins as a narrative the aim of real life, it gives it the recognizable features of characters loved or respected," writes Ricœur in Soi-même comme autre (Seuil, 1990). The narrative identity brings the two ends of the chain together: the permanence of character over time and the subsistence”. But because it allows several stories as well as their permanent restructuring, it is therefore never perfectly finalized, and because of this, it enriches the ordinary understanding of a person thus conceived of as a character engaged in a narrative struggle against the scattering of lived experiences.
Starting from the notion of ipseity, Ricœur thus leads us to a flexible and dynamic iconcept of dentity which immunizes against the danger of a return, even indirect, towards a "strong" self understood as a hard core. Often used by literary studies, Ricœur's analysis also allows dialogue with political philosophy, in particular that of the Canadian philosopher Charles Taylor who recognizes the interpretative and historical horizon within which the "self" takes source.
* * *
Saturday, June 27, 2020
Milky Way
An AFP photographer caught images of the Milky Way using
a long exposure. From Syria, on a moonless night, a
view of it remains a rare phenomenon.
https://www.journaldemontreal.com/2020/06/27/en-images-la-voie-lactee-brille-au-dessus-des-ruines-dariha-en-syrie
a long exposure. From Syria, on a moonless night, a
view of it remains a rare phenomenon.
https://www.journaldemontreal.com/2020/06/27/en-images-la-voie-lactee-brille-au-dessus-des-ruines-dariha-en-syrie
Friday, June 26, 2020
Statues
source: Liberation, Check News June 26, 2020
author: Jacques Pezet
translation: GoogleTranslate/doxa-louise
Hello,
In an interview published this June 24, 2020 in Le Point , the founder of Puy du Fou (Theme Park) and right-wing essayist Philippe de Villiers opposes the downing of statues in France, the wish for which is currently expressed by anti-racist activists for links to slavery and colonial history. He states :
"I leave that to the spiritual sons of Robespierre. The pretension to the removal of statues responds to a dangerous escalation that begins with individual whim, sometimes based on an understandable intuition, but which most often ends in the rewriting of history, thanks to a revolutionary mechanism that goes well beyond public epigraphy. The destroyers within the great expiatory movement know very well what they are doing. They seek to break our collective imagination in order to excite one the other in a memory competition in order to separate the "absolute culprits" and the "ontological victims". It amounts to neither more nor less than to perpetrate a "memory-cide" and initiate a process of penitential submission. "
However, as some internet users have noticed, Philippe de Villiers has not always been against the downing of statues. On June 30, 1989, then Member of Parliament for Vendée, he asked in the program Apostrophes that the occasion of the celebrations of the bicentenary of the Revolution "be seized by the President of the Republic to take down and unbolt all the criminals against humanity, whose crimes are imprescriptible: Robespierre, Marat, Saint-Just, Turreau, Carrier ”.
Descendant of the Le Jolis de Villiers family, part of the French nobility, Philippe de Villiers was one of the French politicians, often from the right or from the far right, who campaigned for those killed by revolutionary troops during the war de Vendée, from 1793 to 1796, be recognized as victims of a "Vendean genocide". Historians, like Laurent Avezou , oppose this term since the victims were not killed because of belonging to an ethnic, cultural or religious community and prefer to speak of "war crimes" .
Note that Philippe de Villiers demanded that the statues of those who have committed crimes against humanity be removed. And we will remember the statements of Emmanuel Macron (with whom De Villiers tells us he is sometimes in private discussion), who during a trip to Algiers in February 2017 (then candidate for the presidential election) claimed that French colonization had been " A crime against humanity" , and stated in November 2017, in Ouagadougou , that "the crimes of European colonization are indisputable".
cordially
Jacques Pezet
author: Jacques Pezet
translation: GoogleTranslate/doxa-louise
Did Philippe de Villiers call to remove statues in 1989?
While he claims that statue attackers wish to perpetrate "memory-cide", the Vendéen Philippe de Villiers had yet asked that several revolutionary figures, like Robespierre, be unbolted in 1989.
Hello,
In an interview published this June 24, 2020 in Le Point , the founder of Puy du Fou (Theme Park) and right-wing essayist Philippe de Villiers opposes the downing of statues in France, the wish for which is currently expressed by anti-racist activists for links to slavery and colonial history. He states :
"I leave that to the spiritual sons of Robespierre. The pretension to the removal of statues responds to a dangerous escalation that begins with individual whim, sometimes based on an understandable intuition, but which most often ends in the rewriting of history, thanks to a revolutionary mechanism that goes well beyond public epigraphy. The destroyers within the great expiatory movement know very well what they are doing. They seek to break our collective imagination in order to excite one the other in a memory competition in order to separate the "absolute culprits" and the "ontological victims". It amounts to neither more nor less than to perpetrate a "memory-cide" and initiate a process of penitential submission. "
However, as some internet users have noticed, Philippe de Villiers has not always been against the downing of statues. On June 30, 1989, then Member of Parliament for Vendée, he asked in the program Apostrophes that the occasion of the celebrations of the bicentenary of the Revolution "be seized by the President of the Republic to take down and unbolt all the criminals against humanity, whose crimes are imprescriptible: Robespierre, Marat, Saint-Just, Turreau, Carrier ”.
Descendant of the Le Jolis de Villiers family, part of the French nobility, Philippe de Villiers was one of the French politicians, often from the right or from the far right, who campaigned for those killed by revolutionary troops during the war de Vendée, from 1793 to 1796, be recognized as victims of a "Vendean genocide". Historians, like Laurent Avezou , oppose this term since the victims were not killed because of belonging to an ethnic, cultural or religious community and prefer to speak of "war crimes" .
Note that Philippe de Villiers demanded that the statues of those who have committed crimes against humanity be removed. And we will remember the statements of Emmanuel Macron (with whom De Villiers tells us he is sometimes in private discussion), who during a trip to Algiers in February 2017 (then candidate for the presidential election) claimed that French colonization had been " A crime against humanity" , and stated in November 2017, in Ouagadougou , that "the crimes of European colonization are indisputable".
cordially
Jacques Pezet
Thursday, June 25, 2020
CanadaR
Using masks with Synfig does open up some fascinating possibilities.
In the first example below, I have imported an image from the Web, and a
text which I use as a mask to 'reveal' the image underneath. (Simple to do,
setting the blend method on the text to Alpha Over on top of a colored rectangle).
So where am I? Somewhere in Canada...
In the second example, I can do the same trick. And because the star is a vector
drawing from Synfig itself, there is an invert function that clouds the star but reveals the
image. Now you know where we are (Clue: somewhere in Banff National Park)
In the first example below, I have imported an image from the Web, and a
text which I use as a mask to 'reveal' the image underneath. (Simple to do,
setting the blend method on the text to Alpha Over on top of a colored rectangle).
So where am I? Somewhere in Canada...
In the second example, I can do the same trick. And because the star is a vector
drawing from Synfig itself, there is an invert function that clouds the star but reveals the
image. Now you know where we are (Clue: somewhere in Banff National Park)
Wednesday, June 24, 2020
FancyZones
Where I live, today is a holiday and - now that things are a tad
cooler - a nice day for a stroll. fancyZonesThat said, I found a new set of
'power toys' for windows 10 that heavy window users might aprreciate.
Love the FancyZones because doing translations can get really involved...
cooler - a nice day for a stroll. fancyZonesThat said, I found a new set of
'power toys' for windows 10 that heavy window users might aprreciate.
Love the FancyZones because doing translations can get really involved...
Tuesday, June 23, 2020
Monday, June 22, 2020
Sunday, June 21, 2020
Saturday, June 20, 2020
Write_On
So near, but nowhere!!!
My number look the same, but my first width point is off:
My number look the same, but my first width point is off:
* * *
What I needed todo was use the Synfig documention, as well:
Here is the result:
Going to linear interpolation is probably wiser, especially if one foresees,
using widths of various heft.
What to watch for for the animation: the position settings of r the two
widthpoints, before and during the animation work.
Flat top going into point 1; Flat top going out of point 2. (This, at the drawing
stage).
Friday, June 19, 2020
Letter_U
Starting to see how animated writing works!!
Will be trying for a script of my own, tomorrow.
https://forums.synfig.org/t/animated-writing/1493/3
Will be trying for a script of my own, tomorrow.
https://forums.synfig.org/t/animated-writing/1493/3
Thursday, June 18, 2020
Wednesday, June 17, 2020
Line-Up
Summer is fast approaching. Maybe I can make something...
So the preview crashed the program, but I need to work on my effects
anyway...
https://www.theguardian.com/food/2020/jun/17/how-to-make-the-perfect-knickerbocker-glory-recipe-felicity-cloake
anyway...
Tuesday, June 16, 2020
A Charm
I was getting pretty frustrated with Edge, which often left me with
a blank page or wouldn't take an address!!
So I downloaded the newer version (which is expected to be rolled out
with the next Microsoft update). Works like a charm!
Edge will never be Google, and that's a good thing. The one gives rational searches,
the other intuitive ones and I use both. Am looking forward to testing how Edge
translates, though...
* * *
Not sure how I feel about the girl dancer, re-assembled!!
a blank page or wouldn't take an address!!
So I downloaded the newer version (which is expected to be rolled out
with the next Microsoft update). Works like a charm!
Edge will never be Google, and that's a good thing. The one gives rational searches,
the other intuitive ones and I use both. Am looking forward to testing how Edge
translates, though...
* * *
Not sure how I feel about the girl dancer, re-assembled!!
Monday, June 15, 2020
We Are Open
* * *
Just got that the skeleto deformation layer is meant to aimate
raster images, so I actually will not need to cut my characters in pieces
to make them dance. Nice touch!
Sunday, June 14, 2020
Decisions
Synfig allows one to specify - through the parameters it exposes -
how various objects will behave. it does help to have some fluency with
mathematical terms and relationships.
The example canon shooter varies between 45 and 60 degree angles; something
specified by entry.
My quickly drawn path doesn't really correspond to anything. It is skewed to one side,
and is not a parabola.
The sampling behaviour for the blur in the example canon is a decision to use
hyberbolic rather than linear; a much more subtle effect. The sampling rate is kept lower
to save on compute time...
how various objects will behave. it does help to have some fluency with
mathematical terms and relationships.
The example canon shooter varies between 45 and 60 degree angles; something
specified by entry.
My quickly drawn path doesn't really correspond to anything. It is skewed to one side,
and is not a parabola.
The sampling behaviour for the blur in the example canon is a decision to use
hyberbolic rather than linear; a much more subtle effect. The sampling rate is kept lower
to save on compute time...
The Parabola
The parabola is something of a hybrid. it is a mathematical algebraic
concept (eg y = x^2) whose geometric properties make it interesting for
designing objects.
A circle can move in any direction and the inner relationships are always the
same until one introduces an orthogonal basis. Then we start dealing with sin and cos
functions. The directrix defining the parabola is an axis. The focus itself, then,
is the same distance from the vertex as the on the other side. The points of the parabola
will then be equidistant from the focus and the axis. Because the perpendiculars to the
directrix all reflect light toward the focus, the parabola is the best shape for
various instruments such as satellites and radars!!
see: Math is Fun Parabola
source: Wikipedia
concept (eg y = x^2) whose geometric properties make it interesting for
designing objects.
A circle can move in any direction and the inner relationships are always the
same until one introduces an orthogonal basis. Then we start dealing with sin and cos
functions. The directrix defining the parabola is an axis. The focus itself, then,
is the same distance from the vertex as the on the other side. The points of the parabola
will then be equidistant from the focus and the axis. Because the perpendiculars to the
directrix all reflect light toward the focus, the parabola is the best shape for
various instruments such as satellites and radars!!
Saturday, June 13, 2020
Parabolic
A little something to ponder on a Saturday morning: when animating, one
is using t on the x-axis as reference!
* * *
https://wiki.synfig.org/Parabolic_Shot
* * *
There is a straightforward way to achieve this as a one-off; that is,
using a path defined with a spline and linking the ball center to it. Below:
The procedure is illustrated in a few minutes - at 12:00 - in the following video:
Friday, June 12, 2020
Thursday, June 11, 2020
Physics Breakthrough
author: AFP (agence France-Presse) Thursday, June 11, 2020 07:13
translation: GoogleTranslate/doxa-louise
More than a second of observation in space, versus milliseconds on Earth: overcoming the limits of gravity, scientists have succeeded, aboard the International Space Station (ISS), a performance in quantum physics helping to better understand the fascinating mechanics that governs the microscopic world.
The feat was achieved at the Cold Atom Laboratory, a space microlaboratory installed by NASA on board the ISS in 2018, dedicated to experiments on atoms at temperatures of extreme cold, close to absolute zero, i.e. -273.2 ° C, reports a study published Thursday in the journal Nature .
Operating remotely from Earth, physicists have generated “Bose-Einstein condensates”, ultra-cold gases that form a new state of matter (the “fifth state” after solid, liquid, gas and plasma), predicted in the 1920s by Albert Einstein and the Indian mathematician Satyendranath Bose, and observed for the first time in 1995.
These gases are an aggregate of several tens of thousands of atoms which, cooled at very low temperatures, become inseparable from each other to form only one single wave, and all react in the same way at the same time. This is a quantum, mechanical property, governing the world of the infinitely small, according to which a particle (atom, ion, photon, etc.) or a group of particles can be found in several states at the same time , which can overlap and intertwine, forming a linked system, regardless of the distance between them.
But these amazing properties are very difficult to observe, because they disappear on contact with the outside world. Also, to maintain an atom in a quantum state, it is necessary to stabilize it, therefore to slow down its speed while cooling it. In the laboratory, this manipulation is hampered by Earth's gravity, which inevitably accelerates atoms.
Hence the idea of turning to space where microgravity (or microweight) no longer pulls towards the Earth and allows to recreate the conditions of a free fall. Result: “Quantum atoms are trapped by a combination of magnetic fields and lasers; they "float" longer, more than a second, instead of the generally achievable tens of milliseconds, "Kamal Oudrhiri, one of the study's authors, told AFP.
This extended observation time, which allows more precise measurements, will even soon pass to five seconds, ensures this space engineering specialist at NASA.
Because the Cold Atom Laboratory is capable of reproducing the conditions allowing these measurements for "12 hours in a row" - a feat compared to experiments of the same type simulating microgravity (in particular parabolic flights in zero gravity) which do not exceed a few minutes , specifies the scientist.
"What they managed to do in orbit is incredible!" reacted Daniel Hennequin, physicist specializing in quantum at the CNRS. "This will allow us to better understand quantum mechanics, a science which we will soon celebrate 100 years, which has never been called into question by experimentation, but to which we have never understood anything because it is completely counter-intuitive, ”he comments.
Bose-Einstein condensates, large "objects" visible to the naked eye, straddle the border between the microscopic world, governed by quantum mechanics, and the macroscopic world, governed by "classical" physics, but "whose theory tells us that it is also quantum ", continues the scientist.
The Austrian physicist Erwin Schrödinger (1887-1961) had thus imagined an experiment where a cat enclosed in a box with a vial of poison would be both dead and alive at the same time. "With the condensates, we are getting near the kitten," quips Daniel Hennequin.
A better understanding of this fifth state of matter could in particular shed light on one of the great mysteries of the Universe, dark matter, this invisible mass that populates galaxies, but with unexplained effects, predicts Kamal Oudrhiri.
😺
translation: GoogleTranslate/doxa-louise
A breakthrough in quantum physics made in space
More than a second of observation in space, versus milliseconds on Earth: overcoming the limits of gravity, scientists have succeeded, aboard the International Space Station (ISS), a performance in quantum physics helping to better understand the fascinating mechanics that governs the microscopic world.
The feat was achieved at the Cold Atom Laboratory, a space microlaboratory installed by NASA on board the ISS in 2018, dedicated to experiments on atoms at temperatures of extreme cold, close to absolute zero, i.e. -273.2 ° C, reports a study published Thursday in the journal Nature .
Operating remotely from Earth, physicists have generated “Bose-Einstein condensates”, ultra-cold gases that form a new state of matter (the “fifth state” after solid, liquid, gas and plasma), predicted in the 1920s by Albert Einstein and the Indian mathematician Satyendranath Bose, and observed for the first time in 1995.
These gases are an aggregate of several tens of thousands of atoms which, cooled at very low temperatures, become inseparable from each other to form only one single wave, and all react in the same way at the same time. This is a quantum, mechanical property, governing the world of the infinitely small, according to which a particle (atom, ion, photon, etc.) or a group of particles can be found in several states at the same time , which can overlap and intertwine, forming a linked system, regardless of the distance between them.
But these amazing properties are very difficult to observe, because they disappear on contact with the outside world. Also, to maintain an atom in a quantum state, it is necessary to stabilize it, therefore to slow down its speed while cooling it. In the laboratory, this manipulation is hampered by Earth's gravity, which inevitably accelerates atoms.
Hence the idea of turning to space where microgravity (or microweight) no longer pulls towards the Earth and allows to recreate the conditions of a free fall. Result: “Quantum atoms are trapped by a combination of magnetic fields and lasers; they "float" longer, more than a second, instead of the generally achievable tens of milliseconds, "Kamal Oudrhiri, one of the study's authors, told AFP.
"Unbelievable!"
This extended observation time, which allows more precise measurements, will even soon pass to five seconds, ensures this space engineering specialist at NASA.Because the Cold Atom Laboratory is capable of reproducing the conditions allowing these measurements for "12 hours in a row" - a feat compared to experiments of the same type simulating microgravity (in particular parabolic flights in zero gravity) which do not exceed a few minutes , specifies the scientist.
"What they managed to do in orbit is incredible!" reacted Daniel Hennequin, physicist specializing in quantum at the CNRS. "This will allow us to better understand quantum mechanics, a science which we will soon celebrate 100 years, which has never been called into question by experimentation, but to which we have never understood anything because it is completely counter-intuitive, ”he comments.
Bose-Einstein condensates, large "objects" visible to the naked eye, straddle the border between the microscopic world, governed by quantum mechanics, and the macroscopic world, governed by "classical" physics, but "whose theory tells us that it is also quantum ", continues the scientist.
The Austrian physicist Erwin Schrödinger (1887-1961) had thus imagined an experiment where a cat enclosed in a box with a vial of poison would be both dead and alive at the same time. "With the condensates, we are getting near the kitten," quips Daniel Hennequin.
A better understanding of this fifth state of matter could in particular shed light on one of the great mysteries of the Universe, dark matter, this invisible mass that populates galaxies, but with unexplained effects, predicts Kamal Oudrhiri.
😺
Wednesday, June 10, 2020
Hum!!
Reading about recent exchanges in the House of Connons with respect
to sanctions for those who may have abused the CERB. The conumdrum went
something like this: one Member of the Opposition pointing out that extreme sanctions were
racist because likely to affect non-whites in particular. Another Member of the Opposition
claiming that the belief that non-whites were more likely to be frauders was itself
racist. Oh! hum!
All this brought back to me notions current in the 70s, namely Critical Theory as espoused
by Herbert Marcuse. The key concept is repressive tolerance. Here is the kernel of it:
certain kinds of tolerance are actually forms of political repression. To want to look the other
way on Blacks addicted to drugs, or condone it, is actually conterproductive. George Floyd
should not have been around on a work day, in a muscle shirt at 46 years of age, doing drugs.
Period. He should have been in a sports shirt and chinos going to work...Dude is father of
five children!!
Marcuse never spun it quite like that - he thought the sexual revolution was repressive -
but we need to see straight to ge through certain dsifficulties. Hum!!
to sanctions for those who may have abused the CERB. The conumdrum went
something like this: one Member of the Opposition pointing out that extreme sanctions were
racist because likely to affect non-whites in particular. Another Member of the Opposition
claiming that the belief that non-whites were more likely to be frauders was itself
racist. Oh! hum!
All this brought back to me notions current in the 70s, namely Critical Theory as espoused
by Herbert Marcuse. The key concept is repressive tolerance. Here is the kernel of it:
certain kinds of tolerance are actually forms of political repression. To want to look the other
way on Blacks addicted to drugs, or condone it, is actually conterproductive. George Floyd
should not have been around on a work day, in a muscle shirt at 46 years of age, doing drugs.
Period. He should have been in a sports shirt and chinos going to work...Dude is father of
five children!!
Marcuse never spun it quite like that - he thought the sexual revolution was repressive -
but we need to see straight to ge through certain dsifficulties. Hum!!
Tuesday, June 9, 2020
Moving it!
I think I've finally got how the rigged limbs are supposed
to be put togeher. It is animation mode that holds it all together!
Below, the foot will detach in either mode with the widget;
but will only rotate from the skeleton in animation mode:
And the alignment of the limbs places the the green move dot at the center
of the crosshairs, with the rotaion han dle of the parent limb just above:
to be put togeher. It is animation mode that holds it all together!
Below, the foot will detach in either mode with the widget;
but will only rotate from the skeleton in animation mode:
And the alignment of the limbs places the the green move dot at the center
of the crosshairs, with the rotaion han dle of the parent limb just above:
* * *
Monday, June 8, 2020
Headache
Clouds are looking better this morning, and moving at different speeds.
Still tempted to throw it all away,and start anew. Every little change is such
a headcache!!
* * *
Still tempted to throw it all away,and start anew. Every little change is such
a headcache!!
* * *
Sunday, June 7, 2020
Saturday, June 6, 2020
Huge
I get kinda confused sometimes in designing animations:
oops, I forgot to set a keyframe way back and now I need to
'start over' for the complexity involved. Well, no more1 I have just
discovered the history panel, and i can go back and correct things
in a straighforward manner.
Below, I can go back to the original color of the circle with a click, set
it on th times line, a few clicks the other way; I'm back in business.
This is HUGE.
* * *
I' in bits and pieces, but have plans for tomorrow...
oops, I forgot to set a keyframe way back and now I need to
'start over' for the complexity involved. Well, no more1 I have just
discovered the history panel, and i can go back and correct things
in a straighforward manner.
Below, I can go back to the original color of the circle with a click, set
it on th times line, a few clicks the other way; I'm back in business.
This is HUGE.
I read that Robert Quattlebaum - the original designer of Synfig - was particularly
proud of this feature. Rightly so!!
* * *
I' in bits and pieces, but have plans for tomorrow...
Friday, June 5, 2020
SmallT
A charming piece, in today's Le Monde, about the wonderful
return of small talk in the life of Parisians.
https://www.lemonde.fr/big-browser/article/2020/06/04/avec-le-deconfinement-le-retour-bienfaisant-du-small-talk_6041793_4832693.html
return of small talk in the life of Parisians.
https://www.lemonde.fr/big-browser/article/2020/06/04/avec-le-deconfinement-le-retour-bienfaisant-du-small-talk_6041793_4832693.html
Thursday, June 4, 2020
Clouds
Trying toget a day cycle going, not to mention
moving clouds...
Tomorrow!
* * *
Like with a solid-colored object, I cannow go from one gradient to
another. The secret: use only one gradient layer, and change its values
while in animation mode! Obvious, actually!!
moving clouds...
Tomorrow!
* * *
Like with a solid-colored object, I cannow go from one gradient to
another. The secret: use only one gradient layer, and change its values
while in animation mode! Obvious, actually!!
* * *
Starting to get it!
Wednesday, June 3, 2020
Looping
Nothing like forgetting to save your work and having everything disappear
when the program crashes. One has to start all over again.
Below, taking you along my journey to a moving background for a yet-
to-be drawn horse...it is all about learning to use the time Loop feature.
In the first segment, the ball journeys to and fro once.
when I turn on the loop, it does it again, no problem.
the second festure is about that rolling background. the image has to be doubled,
saunter off stage, and then loop. Should have the finishwd project tomorrow.
when the program crashes. One has to start all over again.
Below, taking you along my journey to a moving background for a yet-
to-be drawn horse...it is all about learning to use the time Loop feature.
In the first segment, the ball journeys to and fro once.
when I turn on the loop, it does it again, no problem.
the second festure is about that rolling background. the image has to be doubled,
saunter off stage, and then loop. Should have the finishwd project tomorrow.
* * *
Our desert rock formation lopps once and appears 4 times!!
* * *
Finally got how the loop instructions work💃
The Link setting is where the computer starts reading the loop; the Local
Time setting is when in the animation looping begins, the Duration setting is how
long the loop.
Below, I've marked the two conjoined images One and Two. I did adjust both
and they are not identical (They could have been if I had linked them first!).
it is the appearance of the niumbers that is disconcerting, otherwise the loop
is smooth.
Tuesday, June 2, 2020
Morevna
No doubt about it, synfig is a radically different way of
doing nimation, letting the computer do the drawing. The Morevna project,
from Russia, seems to be the most proficient use of this technology. Below:
I'm hooked! What happens next!?
* * *
It's a fairy tale, collected in the 19th century. Marya Morevna is a warrior-princess,
and her hero-husband - 'Ivan Tsarevitch' - must battle Koschei, the old thin evil man
enemy of women, before he can rejoin his three sisters and their husbands.
https://fr.wikipedia.org/wiki/Maria_Morevna
doing nimation, letting the computer do the drawing. The Morevna project,
from Russia, seems to be the most proficient use of this technology. Below:
I'm hooked! What happens next!?
* * *
It's a fairy tale, collected in the 19th century. Marya Morevna is a warrior-princess,
and her hero-husband - 'Ivan Tsarevitch' - must battle Koschei, the old thin evil man
enemy of women, before he can rejoin his three sisters and their husbands.
https://fr.wikipedia.org/wiki/Maria_Morevna
Subscribe to:
Posts (Atom)