Why Does A Golf Ball Have Dimples?
Physics / Classical Mechanics
A golf ball can be driven great distances down the fairway. How is this possible? The answer to this question can be found by looking at the aerodynamic drag on a sphere without dimples (while it's fl continue reading this fact
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Does Earth Have Its Own Neon Sign?
Physics / Atmospheric
You might wonder what the Northern Lights and neon signs have in common. Actually, a lot! What makes luminous colors shimmer across the Northern sky? The answer is in the Sun. Charged particles ar continue reading this fact
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How Fast is Mach 1?
Physics / Fundamentals
A Mach number is a common ratio unit of speed when one is talking about aircrafts. By definition, the Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in the undisturbed continue reading this fact
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