Physical Science

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

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A reinterpretation of an ancient Babylonian tablet shows that trigonometry might be 1,000 years older than thought. But there's some disagreement.

By Jesslyn Shields

The seriously ambitious experiment aims to understand the mysterious neutrino and maybe even figure out why matter won out over antimatter during the Big Bang.

By Ian O'Neill, Ph.D.

Researchers have come up with the most precise determination of Planck's constant ever, making it possible to reframe the idea of what a kilogram even is.

By Patrick J. Kiger

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Stanford University researchers for have for the first time observed the formation of a super-dense frozen water crystals called ice VII, which don't naturally exist on Earth.

By Patrick J. Kiger

Two physicists have worked out a mathematical model for time travel. Now we just need some heretofore unseen exotic matter to get traveling.

By Ian O'Neill, Ph.D.

New data shows extremely high radiation levels inside one of the reactor containment vessels. Are post-tsunami radiation levels spiking? Not so fast …

By Patrick J. Kiger

DNA found at a crime scene doesn't automatically mean the person matching it is guilty, say researchers of new forensics guide.

By Dave Roos

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Light-reflective glasses promise to foil CCTV cameras. Here's how.

By Michelle Adelman

Science is still working out exactly what makes frozen water so slippery, but there are a few intriguing theories.

By Laurie L. Dove

The race is on to build some seriously strong magnetic fields that are capable of doing amazing thing, like literally mapping neurons.

By Kate Kershner

Helicopters, ceiling fans, even tricked-out car tire rims: Sometimes they can even look like they're going backward, or bending.

By Laurie L. Dove

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A wall of Lego-like bricks creates the illusion of hyper-vivid, three-dimensional audio, altering sound waves much like a hologram does visible light.

By Patrick J. Kiger

It's a young lady! It's an old woman! It's a blue dress! No, it's gold! Why are we fooled by optical illusions and what do they tell us about how the brain works?

By Meisa Salaita

Whereas the majority of sighted people see a world with just a million colors, or fewer if you're color-blind.

By Kate Kershner

There's some serious science behind the sparkle, with different metals, compounds and other elements creating the fun firework.

By Christopher Hassiotis

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

By Jesslyn Shields

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.

By Patrick J. Kiger

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

By Christopher Hassiotis

How effective is fighting a wildfire with controlled fire?

By Oisin Curran

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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?

By Lauren Vogelbaum

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.

By Patrick J. Kiger

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

By Melanie Radzicki McManus

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

By Patrick J. Kiger

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

By Sarah Gleim

It’s true: In 6 easy steps, you too can draw an impossible shape.