Sunday, February 24, 2013
Saturday, February 23, 2013
Friday, February 22, 2013
Thursday, February 21, 2013
Figures...
It's called land-grabbing, and it is considered a new form of colonialization: the
developed world buying arable land in the developing world. Prospects are good,
given a growing world population.
developed world buying arable land in the developing world. Prospects are good,
given a growing world population.
Tuesday, February 19, 2013
Friday, February 15, 2013
Thursday, February 14, 2013
Watch your C, lover!
'Bad' cholesterol being furnished by meat products (saturated) and trans fats (altered by man, such
as certain oils).
http://sciencesetavenir.nouvelobs.com/infographies/20130213.OBS8763/infographie-l-action-du-cholesterol-dans-l-organisme.html
Sunday, February 10, 2013
Fovea
source: Étienne Tisserand, Jean-François Pautex, Patrick Scweitzer, ANALYSE ET TRAITEMENT DES SIGNAUX, Méthodes et applications au son et à l’image, Dunod,
Paris, 2008.
traduction: doxa-louise.
Color Perception
The visual perception of a luminous stimulus can be decomposed into two sensations:
- a luminous sensation tied to the intensity of the observed stimulus;
- a color or chromatic sensation depending on the luminous spectrum of the stimulus.
These sensation are transcribed to the brain by the two types of visual receptors found in the retina:
-rods adapted to the sight of forms and mouvement. These are active under conditions
of low lighting (scotopic vision);
- cones adapted to the sight of colors and details under medium to high lighting conditions (photopic vision or daylight).
As a consequence, only the cones are responsible for the color sensation. The density
of cones is particularly high in the central zone of the retina called the fovea, whose
average width is approximately 0,4mms. As one leaves the retina, the proportion of rods
goes up to the detriment of that of cones which are pratically absent at the periphry of the retina. The spectral band of light, visible by the human eye, ranges in wavelength
between 380 nms and 780 nms. In order to analyse this band, 3 types of cones of a
specific spectral sensibility are active.
Saturday, February 9, 2013
Thursday, February 7, 2013
Monday, February 4, 2013
SuperB
Yesterday saw a superbowl to remember, by all accounts. Perhaps not
as an epiphany of fair play, but certainly one in terms of spirit. San
Francisco versus Baltimore created a veritable East meets West
psychodrama, although the actual two leagues are country wide in and of
themselves. East meets West is a thread in all superbowls, for they are
a tribal celebration of sport of interest to all in the US. Yet folks in the
West are three hours behind those in the East. Superbowl XLVII - the
47th since 1967 - was played in New Orleans.
As a woman, I will refrain from commenting the actual play, which I didn't
watch but read about. In preparation, I glanced through the New Yorker
sports section for some insight. What I gleaned comes down to the
notion that the game would be epic because both teams possessed
defensemen that were exceptionally fast. From what I read of the actual
game, offensemen were exceptionally energetic. With respect to the historical
game, that is.
And don't we have here a thread that runs through many sports, including
hockey. The players are not the same; they are the supermen of the game.
The hero of that long touch down, player Jones - in pictures - looks slightly stunned by
what he has accomplished. How was that possible, he seems to be asking.
Some of those superbowl party menus also seem to touch the impossible.
Beer peanut brittle, anyone? Just the right mix of sweet and salty, according
to the L.A. Times. So this is the situation out West, where the game plays at
3:30 in the afternoon. More beer is drunk on Superbowl Sunday than any other day
in the year. The brothers out West have ample time drown their enthusiasm
before those chili pepper ribs come on-line. As for the fans down East, are they
ever subjected to Italian loaf sandwiches the size of dictionaries? Work for the
ethnographers, there.
Beyonce - bless her - lipsynched the presidential inauguration, presumably so she
could save her voice for the Bowl. And deliver she did. Alas, those expensive- to - buy
commercials were deemed unfunny. Dudes deserve the best, on this their holiday.
as an epiphany of fair play, but certainly one in terms of spirit. San
Francisco versus Baltimore created a veritable East meets West
psychodrama, although the actual two leagues are country wide in and of
themselves. East meets West is a thread in all superbowls, for they are
a tribal celebration of sport of interest to all in the US. Yet folks in the
West are three hours behind those in the East. Superbowl XLVII - the
47th since 1967 - was played in New Orleans.
As a woman, I will refrain from commenting the actual play, which I didn't
watch but read about. In preparation, I glanced through the New Yorker
sports section for some insight. What I gleaned comes down to the
notion that the game would be epic because both teams possessed
defensemen that were exceptionally fast. From what I read of the actual
game, offensemen were exceptionally energetic. With respect to the historical
game, that is.
And don't we have here a thread that runs through many sports, including
hockey. The players are not the same; they are the supermen of the game.
The hero of that long touch down, player Jones - in pictures - looks slightly stunned by
what he has accomplished. How was that possible, he seems to be asking.
Some of those superbowl party menus also seem to touch the impossible.
Beer peanut brittle, anyone? Just the right mix of sweet and salty, according
to the L.A. Times. So this is the situation out West, where the game plays at
3:30 in the afternoon. More beer is drunk on Superbowl Sunday than any other day
in the year. The brothers out West have ample time drown their enthusiasm
before those chili pepper ribs come on-line. As for the fans down East, are they
ever subjected to Italian loaf sandwiches the size of dictionaries? Work for the
ethnographers, there.
Beyonce - bless her - lipsynched the presidential inauguration, presumably so she
could save her voice for the Bowl. And deliver she did. Alas, those expensive- to - buy
commercials were deemed unfunny. Dudes deserve the best, on this their holiday.
Friday, February 1, 2013
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