Physical Science

Physical science is the study of the physical world around you. Learn about everything from electricity to magnetism in this section.


Dangerous and unpredictable, rogue waves in the ocean seem to more closely resemble light waves than water waves.

In 1957, Hugh Everett first wrote about the multiverse — different realms where every choice spawns a separate universe in which another version of ourselves does something different. It sounds crazy, but here are some reasons it might be true.

YouTube channel Let's Melt This has become an internet sensation. Why are we so mesmerized by videos of everyday objects undergoing phase change?

How effective is fighting a wildfire with controlled fire?

The site of the largest nuclear accident in history is now home to diverse wildlife. Can studying the animals help researchers discover how radiation affects us all?

One of the world's most complex devices is gearing up again for some serious collisions.

Four (squared) cheers for Square Root Day!

For nearly 40 years, science has relied upon the Standard Model of particle physics to describe the universe. But now some are saying that it's time for a rewrite.

They say gunshot residue is not a good way to ID a suspect.

A molecule used to protect the chlorine in swimming pools from sunlight could be key to building new kind of DNA structures

Scientists recently found that a little tender-loving TMS to a specific part of the brain could decrease the subject's belief in God, angels or heaven by a third.

Developed in Israel, this foul-smelling liquid has been used on Palestinian and Israeli protesters … and it's showing up in the United States.

Early fusion reactor experiments ran into a big problem: It took more energy to get fusion started than was produced by the fusion itself.

Cosmological redshift: sounds like the latest blockbuster coming to a theater near you, doesn't it? In reality, it has to do with how light itself travels -- and understanding how it works is essential to advanced space telescope technology.

At the same time scientists discovered that nitrous oxide could numb agonizing pain, they also found it could make you really lightheaded and silly. Yes, huffing parties started in the 1700s.

There are so many things in this world that are possible, and shattering glass with sonic force is one of them – but just how probable is it, really?

What if there are colors within the visible spectrum that our brains can't perceive? In fact, there are. They're called impossible colors. But some researchers think they've discovered a way to see the impossible.

A sound wave alone probably won't kill you. Crank the volume on a terrible song, though, and you just might annoy everyone to death.

These small molecules are the foundation for much bigger things, from ordinary household products around us to essential components within our bodies.

Polymers are the basic components in so many of the products we use each day.

If you've ever had a half-frozen beer explode on you, you know that yes, alcohol freezes -- but not all in the same way. We'll let you in on the secrets to frozen alcoholic delights.

Light travels pretty rapidly, but when it comes to faraway galaxies, that light takes a while to reach our telescopes. In fact, the light you see might actually be from billions of years ago.

Juice and soda mix well with alcohol, but a few things don't mix so well. Some may just produce embarrassing moments. Others could cost you your life.

Atoms: the building blocks of life and the universe. We're all made of these microscopic bits of matter, but how many does it take to make a complete human being? And exactly what kinds of atoms do we have inside us?

Seven ounces a ray! No, that's a lie. Measuring the weight of light is not as straightforward as that. So what's the more complicated explanation?