Comments by "Goatcha" (@Goatcha_M) on "These Comparisons Got Me Shook." video.

  1. 6:24 if you pause and watch the micrograv flame, it seems to shrink despite the static image, at least for me. Interesting illusion.
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  2. Birds have an extra cone for tetrachromatic color vision. This extra cone expands the visible light spectrum, allowing birds to see ultraviolet frequencies. Dogs: 2 cones, see in browns and yellows, humans: 3 cones: human vison, birds: 4 cones: technicolour.
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