I took a vid from youtube. (I had it already for older project). Extracted all ~5600 frames. Converted it from full colorRaster (BMP, xy, pixels, whatever) to 1-bit. (black and white). Then to SVG which is Vector (Lines with angles, filled geometric shapes) Then from Vector BACK to BMP but VERY tiny. (28×64 – that’s 28 across by 64 down: A VERY SMALL smartphone!) THEN back to SVG (making new vectors from tiny ones, which got rid of noise by pushing lines together (got rid of gaps). THEN from Vector back UP in size. So that’s my short code to remind me of my process so that I’ll kow what I did a few years from now.

I took a vid
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Longer video on steradian or solid angle. I’m going to fill myself to overflowing with hearing different teachers teach the same subject as: a) Now it’s a standard. b) It’s an Ideal, which usually I fight against. c) I can see how radius moves to chosen angle which rotates around itself to form a cone d) This cone does NOT automatically extend to INFINITY as it starts with a radius which means: e) This cone STOPS at the edge of a sphere. f) This sphere has a surface from within which the solid angle distinguishes itself. g) The circle that forms at the surface of the sphere from within is radius squared. h) You can turn that radius squared into a 2D square, with equal length and height. i) This square follows the inverse square law (1 : 4 : 9 : 25 etc) as it continues as far as you need it to go. So, What’s special? a) Chosen angle b) It’s in a sphere c) A circle is made with this. d) The circle becomes a square. e) That square keeps moving outwards. f) It’s standard now. https://www.youtube.com/watch?v=DbwSe4-DczI

Longer video on steradian
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