Lights Definition and 161 Threads

http://www.abc.net.au/science/news/stories/s818193.htm

hi all, In our school there is a geography fair and i was just wondering weather it is possible to create aurura lights model. i feel using a hologram a fairly good model can be made. But i want something more better. I hope some one can help me. :confused:

From: http://www.redcolony.com/articles/030115.html "Photon Reaction: Until recently, scientists believed that photons (light) had no mass, but recently, it was discovered that they did have mass. Light has mass. Light is reflected by reflective surfaces. For every action, there is an equal...

If two 55 watts light is connected to a car's 12v battery, what amp rating relay should I get? 55/12 = 4.5 * 2 = 9amps? right?

What happens? Now I was just thinking about this before I went to bed the other night... I was thinking of different variables and whatnot, but the main question, what happens to the light that is "projected" by the luminous bodies that are the headlights? Now of course, we are in a...

Please see the thread: https://www.physicsforums.com/showthread.php?s=&threadid=7946

If a person passes through 6 sets of independent traffic lights that have a probability of 0.7 to stop the person at any particular set. Then how would you figure out the probability of that person stopping on the 2nd and 6th sets only?

I am posting here since no specific claims are made. This seems to be a good example of... http://www.news24houston.com/content/headlines/?ArID=16799&SecID=2

[SOLVED] Lights interaction with matter When light (photons/waves/whatever) comes into contact with matter, what are all the possible outcomes? Anyone mind listing them out with an explanation for each?

"Then a shadow crosses the massive, polished Dome of the Rock.. And another shadow. Suddenly the air is swarming with mud-coloured jets and helicopters that have crossed the Mediterranean Sea. Tanks, like a colony of ants, charge across the desert. Bombs explode. Buildings tumble. The sky goes...

Hello, I am asking about "cool lights" for a project I have boiling over on the back burner.:smile: I have heard about "cool lights" in the film industry. They are supposedly very cool... not hot. Even 50K lights used at night, to make it look like daylight, can be cool lights. The...