Physics

Questions and Answers

What are the main colours: cyan-magenta-yellow or red-green-blue or red-yellow-blue?

Questions and Answers

If I stand in an open field on a clear day with blue sky how high can I see?

Questions and Answers

Why is a fire blue inside?

Questions and Answers

How many LEDs do you have to put in series so that they don’t burn out when you connect them to a 220-230V power...

Questions and Answers

What color do you get if you mix all the most important colors (red, black, white, green,…)?

Questions and Answers

Why is gravity not yet used as green energy?

Questions and Answers

If a pilot flies his plane faster than the sound, does he still hear any sound in his cockpit? If so, how come,...

Questions and Answers

What is a resultant force and how can you determine its magnitude?