A broad category referring to the study of the physical universe including nature and biology.


What is Light?

“Light” is a particle (photon), that acts like a wave, and is understood as a localized vibration in the electromagnetic field.



At Its Core, Chemistry is Physics Fact

On a fundamental level, chemistry can be explained by physics. The atoms that make up the periodic table elements are themselves made of quantum particles.




Nature Abhors a Vacuum Fact

Aristotle once postulated “horror vacui” (Nature Abhors a Vacuum). It turns out nature really can’t stand a perfect vacuum.


Sound Always Travels Slower than Light Myth

Sound usually travels slower than light, but not always. Under normal conditions, light moves roughly a million times faster than sound, but under the right conditions sound can travel faster than light.


Machines Can Think Fact

Whether or not machines can think, depends on our definition of “think.” Generally we can say, machines can think, but they think differently than humans.


Toilets Flush Backwards in Australia Myth

Despite the Coriolis Effect, toilets don’t flush backwards in Australia (or on the other side of the world, or in different hemispheres, or on one side of the equator).