Bad Astronomy, Another brain-frying optical illusion: What color are these spheres?
If a black hole is a sphere and not a flat disk, why does the recent picture of a black hole show the event horizon around the outside of a circle? Shouldn't
Bad Astronomy, Another brain-frying optical illusion: What color are these spheres?
Individuals who use psychedelic substances like LSD and psilocybin may experience a significant increase in unusual visual phenomena, such as seeing patterns or intense colors that are not there : r/science
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What color are the circles? Viral optical illusion baffles the internet