Einstein Brownian motion evidence molecules

Einstein used Brownian motion to support molecules

Brownian motion is the movement seen in tiny particles suspended in a liquid. Einstein showed that this visible movement could serve as firm evidence for molecules, which are too small to see directly.

The Lost Cause myth recast the Confederacy as a noble struggle

After the American Civil War, supporters of the Lost Cause portrayed Confederate leaders as heroic and minimized slavery's central role in secession. The narrative spread through monuments, textbooks and public commemorations. It helped justify racial inequality and shaped how generations of Americans understood the war long after it ended.

Aircraft contrails warm Earth on average

High-altitude aircraft, especially large jetliners, emit aerosols and contrails that can increase cirrus cloud formation. Cirrus clouds can both cool and warm Earth, but thin natural cirrus and contrails have a net warming effect on average.

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Einstein Brownian motion evidence molecules

Einstein used Brownian motion to support molecules

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