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Physics Facts

Neutrinos to the Rescue

Have you ever wondered what the most abundant particle in the universe is after photons of light? The answer is: Neutrinos. These tiny, neutral and almost mass-less particles that move at almost the ... Continue reading

Beta Decay

The Physics of Sandcastles

Give a plastic bucket and a shovel to a child, then turn her loose on a beach full of sand. She'll happily toil the day away building the sandcastle to end all sandcastles. It's pure fun. It's also ... Continue reading

So much going on in a grain of sand.

Kinetic Theory of Gases

Air is a gas, and gases can be studied by considering the small scale action of individual molecules or by considering the large scale action of the gas as a whole. We can directly measure, or sense, ... Continue reading

Carbon Dating From The Skies

Determining the age of relatively recent fossils, those of plants and animals that lived tens of thousands of years ago, is not a guessing game but an exact science. By using carbon dating we can ... Continue reading

Carbon dating the bones of an animal can pinpoint the time this animal died to within a few years.