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• Why can i only see dust motes in sunlight or incandescent lights?

  Asked by frigate1985 from iPhone | 5 responses

• Does anybody else get a sense of foreboding/ unease when the season changes?

  Asked by fathippo | 11 responses

• What is the difference between artificial light and natural light?

  Asked by lexipoorocks | 10 responses

• How can artificial light be produced to give Vitamin D like the sun?

  Asked by talljasperman | 10 responses

• How does this aspect of visual perspective work?

  Asked by Ltryptophan | 27 responses

• How should I display the "Deck Crystal" I purchased so that it reflects light in my studio the same way they did in old ships?

  Asked by Dog | 12 responses

• Why do you need glasses to look in a mirror?

  Asked by mzehnich | 7 responses

• What is the literal speed of light?

  Asked by ChaosCross | 26 responses

• Does anything move faster than light?

  Asked by chucklmiller | 72 responses

• Does anyone believe in the Theories of Quantam Physics?

  Asked by Ruallreb8ters | 36 responses

• Have you ever used a "Vitamin D" artificial sunlight lamp?

  Asked by LC_Beta from iPhone | 17 responses

• Do you have your window's blinds/curtains open or closed during the day?

  Asked by erichw1504 | 56 responses

• Can someone explain why this happens to my wife?

  Asked by tinyfaery from iPhone | 25 responses

• Are Kino-Flo Tungsten Balanced lights truly tungsten balanced?

  Asked by chuboy from IM | 4 responses

• I need a wheel style bic lighter...but nowadays they're all just clicky!

  Asked by LeotCol | 19 responses

• How are rainbows formed?

  Asked by hiitisit | 12 responses

• What criteria are most important when shopping for a light box?

  Asked by ECassandra | 3 responses

• Which CFL light bulbs cast the yellowest light?

  Asked by occ | 11 responses

• Have you ever used one of those new LED light bulbs?

  Asked by Psychedelic_Zebra | 15 responses

• If our planet was full of volcanic dust in the air, would it help if we could "see" Xrays?

  Asked by wundayatta | 6 responses

• How do you change a scb1000 advantium microwave oven's light bulb?

  Asked by pizzaman | 6 responses

• If you were traveling at the speed of light would you be able to see someones headlights behind you?

  Asked by J0E | 30 responses

• What is this strange phenomenon with the switch? (see details)

  Asked by Dog | 4 responses

• Why do mirrors reverse things horizontally, but not vertically?

  Asked by phoenyx | 9 responses

• Has anyone bought loose LEDs?

  Asked by lapilofu | 13 responses

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