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• Why do the surface of objects always appear darker when they are wet?

  Asked by geniusatwork | 8 responses

• Can I use contact lenses that have frozen (and then thawed, perhaps multiple times)?

  Asked by arnbev959 | 19 responses

• What's with the lights/colors/motion you see when you close your eyes?

  Asked by arnbev959 | 13 responses

• Is there a website that can show you what nearsighted people see?

  Asked by deepseas72 | 20 responses

• Why do ice cubes look yellow when you put them in milk?

  Asked by arnbev959 | 18 responses

• Why does the horizon always appear to be at eye level?

  Asked by Bioplasmic | 6 responses

• A question about optics...

  Asked by lilikoi | 11 responses

• When did you start wearing glasses and what is your current age and prescription?

  Asked by brntholland | 18 responses

• Some questions about rainbows.

  Asked by El_Cadejo | 17 responses

• Are there generic near-sighted glasses?

  Asked by 6rant6 | 21 responses

• Do you ever find yourself overwhelmed by the amount of high visibility colouring around us?

  Asked by FireMadeFlesh | 13 responses

• How does the foldscope microscope work?

  Asked by LostInParadise | 1 response

• Is a shadow on the ground, cast by sunlight, the same width as the object that cast it?

  Asked by Yellowdog | 2 responses

• Why do mirrors flip images side-to-side but not top-to-bottom?

  Asked by CWOTUS | 8 responses

• Who is Venus looking at in this picture?

  Asked by LostInParadise | 14 responses

• What causes the streaks in this photo?

  Asked by FireMadeFlesh | 24 responses

• Is what we see in the mirror a 3D image or a 2D image?

  Asked by Ltryptophan | 8 responses

• Do you have any peculiar ocular stuff going on?

  Asked by wundayatta | 17 responses

• Do humans have built in vision stabilization?

  Asked by Ltryptophan from iPhone | 6 responses

• If eyes can't actually change color, how can someone's eyes appear green, blue, or even grey on any given day?

  Asked by poofandmook | 10 responses

• How do you get the ballerina to spin the other way?

  Asked by Ame_Evil | 35 responses

• What if your human eyes did not reflect light?

  Asked by radcliff | 4 responses

• Currently what is the highest amount of megapixels that a digital camera can take in a single picture?

  Asked by talljasperman | 4 responses

• What is the phenomenon that makes a spoked wheel when turning at a certain speed appear to rotate backward?

  Asked by kelly | 9 responses

• What are Thanksgiving colors?

  Asked by johnpowell | 9 responses

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