how come buildings are made from rectangular bricks then? Would hexagons be easier/more efficient to work with?
Why nature prefers hexagons
61–64 of 64 posts
Re: Why nature prefers hexagons
#62Earlier quoted context omitted.
A spiral scan circuit would just be something like: x = r cos (theta) y = r sin (theta) when you vary r so it gives you a spiral instead of a circle. So it shouldn't be too hard to generate the signals required. Or there could be a different arrangement of the beam deflectors that didn't give you independent control of X and y.
There are sync pulses on every line of analog video, as well as to color burst in most analog video standards. You couldn't just sweep theta and r continuously for a whole frame.
Why not? The sync pulses are because the scan is discontinuous, you could just have one plus color burst every spiral
Re: Why nature prefers hexagons
#63Earlier quoted context omitted.
There are sync pulses on every line of analog video, as well as to color burst in most analog video standards. You couldn't just sweep theta and r continuously for a whole frame.
Why not? The sync pulses are because the scan is discontinuous, you could just have one plus color burst every spiral
I'm guessing that NTSC and PAL have a color burst on every line, vs every frame, because over an entire frame the local oscillator might not be stable enough. At least back in the day.
Same with the timing of the sweep circuits, which only need to hold sync for a single line of video.
Re: Why nature prefers hexagons
#64Earlier quoted context omitted.
Why not? The sync pulses are because the scan is discontinuous, you could just have one plus color burst every spiral
I'm guessing that NTSC and PAL have a color burst on every line, vs every frame, because over an entire frame the local oscillator might not be stable enough. At least back in the day. Same with the timing of the sweep circuits, which only need to hold sync for a single line of video.
Oh cool, didn't realize color burst was used for that, I skimmed over it in the past and misunderstood its purpose. TIL