Ask the Experts - Reference and Definitions

How can I more easily visualize what a horse-power means?

How is the exact value of pi determined?

Everybody knows e=mc² But what are the units?

What speed defines Mach 1? and why?

What is the temperature at which Farenheit and Celsius thermometer readings are equal?

How many atoms thick is aluminum foil?

How long does it take the sun's light to reach earth?

Who discovered the proton? And how was it discoverd?

What exactly is an ELECTRON VOLT as opposed to a VOLT?

What is the fine-structure constant?

What are Newton's three laws?

If, indeed, the speed of light is constant,why is it usually listed for a vacuum?

How was the speed of light determined and who found it, when? How close was the estimate of 186,000 mps to the 'actual' speed of light?

How big is an atom of gold?

Could you tell me a technical name for sugar?

When you said E=mc² ,what does the c stand for?

What are the wavelengths of the basic colors (Red, Orange, Yellow, Green, Blue, Violet) in the color spectrum?