Silly_Q

 Monday morning, and time to get clear about electromotive force, which is energy

produced by electrons in a circuit and electromagnetic waves, which are field forces

travelling in space.

Me, asking a silly question...

Anatomy of an Electromagnetic Wave - NASA Science

In electromagnetic radiation, how do electrons actually "move"? - Physics Stack Exchange

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How did I ever survive without AI:

                                                                      

                                                                                  

                                                                                  

                                                                                 

                                                                                    

Silly!

 Microsoft is offering a new MSN experience, starting this morning. One gets to

customize which feeds one gets (I got rid of sports) as well as the look of the page.

I'm 'silly pink'😊

                                                                    

                                                                      *     *     *

Site has a nice video on transformers:

https://www.electrical4u.com/electrical-impedance/

What is a Transformer (And How Does it Work)? | Electrical4U

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Numpy for machine Learning 9, the very last one, is done. It is about how to filter

an array with Boolean lists, or conditions...

                                                                        

Aspen_Game

 Pygame 9 is out for the week: there is a little game where one tries

to have the dog Aspen collide with the food bowl before it goes off-screen.

Pretty much used the code as given, although I chose the prettier pic of

Aspen, and the more colorful bowl. Also chose not to have the lives number

totally to the right. I find things more restful like this.

                                                          

Did wonder, though, about the writing text to screen code. What is that True

flag about. It turns out, it activates anti-aliasing and makes for a smoother image.

Also wondered why we are rendering text from Font(). Turns out this is a shortcut.

One could also do it from graphics, but it might be more work...

                                                                       

                                                                                 

Clarification_impedance

 A lady asked me about impedance; said it was not clear in her mind. In short,

resistance is what we find in a direct current DC, and impedance in alternating

current AC. And the formula for Ohm's Law is different in each case. In direct

current DC, current is equal to voltage divided by resistance. In alternating current

AC, current is the product of voltage multiplied by impedance!

                                                                              

                  

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So, in the case of a typical household the impedance of the circuit is not an issue,

but the performance rating of the wires is...

                                                                            

Amperage and Wire Gauge Chart: What Size You Need (thespruce.com)

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For the pros:

https://comprendreconstruire.wordpress.com/electricite/entree-electrique/

Household Electric Circuits (gsu.edu)

 

                                                                                    

                                                    

Huge

 A lot of drama in AI last week, as Sam Altman was ousted, joined Microsoft,

and now has returned to Open AI. According to The Economist, there were disagreenments

about 'safety' among board members. It is, undoubtedly, a HUGE issue...

A_Cake

 A really easy recipe for AppleCake just appeared on my Facebook page. Might

make it this evening, and enjoy it warm:

One cuts up two small apples, and cooks them in butter in a pan. One then adds

the other ingredients, well-mixed. Cook 10 minutes on low heat. Flip (on a plate) and

cook the other side 5 minutes. Enjoy warm or cold...

Did a quick calorie count; makes 6,  200 calorie servings:

                                                                            

TG23

 It's American Thanksgiving, Make it Great 😺

                                                                  

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In my wind down phase last night, decided to read through Ducksters" electricity for

kids. I've got the math down on the following problem:

                                                                                     

To check your answer:

                                                                                https://www.ducksters.com/science/physics/resistors_in_series_and_parallel.php

All Good! But one little section from the text was bothering me...

'Note that the total resistance is less than any of the resistors in parallel. This will always be the case. The equivalent resistance will always be less than the smallest resistor in parallel.'