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Physics Facts

Why Does A Golf Ball Have Dimples?

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 ... Continue reading

Golf Ball

The Doppler Effect

As any object moves through the air, the air near the object is disturbed. The disturbances are transmitted through the air at a distinct speed called the speed of sound, because sound itself is just ... Continue reading

Sound is just a sensation created in the human brain in response to small pressure fluctuations in the air.

The Coriolis Effect

The Earth, rotating at about 1000 miles per hour (1,609 km/hr), influences the flow of air and water on its surface. We call this the Coriolis Effect, named after French scientist Gaspard Coriolis, ... Continue reading

Hurricane Elena

Newton's First Law of Motion

Sir Isaac Newton first presented his three laws of motion in the 'Principia Mathematica Philosophiae Naturalis' in 1686. His first law states that every object will remain at rest or in uniform motion ... Continue reading

The story of Isaac Newton discovering the laws of gravity by watching apples falling from a tree is probably just a myth. He did do his work on gravity while at a farm, but that is about as much as can be proven.