I hereby claim:
- I am kbseah on github.
- I am kbseah (https://keybase.io/kbseah) on keybase.
- I have a public key ASB-MYQvJhi_d7XjzpMaA34DUOYW-I0xJ7cQg7Yi82K4mQo
To claim this, I am signing this object:
I hereby claim:
To claim this, I am signing this object:
#!/usr/bin/env python3 | |
dict = "/usr/share/dict/web2" # default path in Mac OS X | |
key = "H" # the letter that must be in the word | |
allowed = "CEKLMO" # other allowed letters | |
min = 4 | |
with open(dict, "r") as fh: | |
for word in fh: | |
word = word.rstrip().upper() |
The Pulfrich effect is an optical illusion where objects moving in a single plane also appear to have depth, because the processing of the visual signal in one eye is delayed, e.g. by holding a filter in front of one eye to dim the light reaching that eye but not the other.
See my other Gist for more info.
This animation illustrates how the time delay in one eye leads to the stereoscopic effect. This diagram shows the view from above looking vertically down at a viewer facing a pendulum (or a display screen) oscillating within the (flat) plane of motion.
The Pulfrich effect is an optical illusion where objects moving in a single plane also appear to have depth, because the processing of the visual signal in one eye is delayed, e.g. by holding a filter in front of one eye to dim the light reaching that eye but not the other.
To view the animation you'll need to make such a filter. One simple method is to take a cheap pair of sunglasses and pop the lens out of one side.
What also works, but not so well, is to fan out the fingers of one hand in front of one eye and rapidly wave the hand up and down to occlude the image with a "strobe" effect.
The Pulfrich effect is an optical illusion where objects moving in a single plane also appear to have depth, because the processing of the visual signal in one eye is delayed, e.g. by holding a filter in front of one eye to dim the light reaching that eye but not the other.
To view the animation you'll need to make such a filter. One simple method is to take a cheap pair of sunglasses and pop the lens out of one side.
What also works, but not so well, is to fan out the fingers of one hand in front of one eye and rapidly wave the hand up and down to occlude the image with a "strobe" effect.