Optics is the study of the properties and behavior of light. In this section you can learn about everything from holograms to lasers and lenses.
You Know White Noise, But What's Pink Noise and Brown Noise?
Skipping Stones on Ice Makes Crazy Sci-fi Sounds
Mystery Behind Cuba's Alleged Sonic Attack Deepens
How Do Disposable Hand Warmers Work?
Why Do Bubbles Pop?
What's the World's Strongest Superacid?
Static Electricity Can Cause Way More Than a Bad Hair Day
Light Pollution Is Stealing the Night
Party Trick Breakdown: Why Do Balloons Stick to Hair?
The Surprising Silver Lining of the Atomic Age Nuclear Tests
How Are Coroners and Medical Examiners Different?
Viking Warrior in Ancient Grave Was a Woman
Time May Not Exist, Say Some Physicists and Philosophers
How Alchemy Paved the Way for Chemistry
Who Was the First Scientist?
A Kid-friendly Introduction to Magnets and Magnetism
How Solenoids Work
Why Does Ice Stick to Your Fingers?
What Is the Formula for Distance?
You Know the Kilo. Now Say Hello to the Quetta!
What Is the Birthday Paradox?
Kummakivi, Finland's Balancing Rock, Seems to Defy the Laws of Physics
What Is Energy?
Could Newly Measured W Boson Break the Standard Model?
Hisashi Ouchi Suffered an 83-day Death By Radiation Poisoning
Could Thorium Power the Next Generation of Nuclear Reactors?
Radioactive! A Profile of the Element Plutonium
Scientists created this expanding black hole illusion to show how your mind can trick your eye.
Your eyes aren't playing tricks on you. Those mountains way off in the distance really do look blue, and it's because of how light wavelengths scatter in the atmosphere.
By Mark Mancini
Primary colors are the blocks from which all other colors are built. But there's a lot more to know about them than the basic red, yellow and blue we learned about in kindergarten.
Is it its own special type of particle? A wave that's flowing through another medium? Or is there some creepy, unknown substance surrounding us that we simply don't perceive or understand?
Scientists are using 3-D printers to make human corneas, an advancement that could end the perennial shortage of corneas from donors.
Light-reflective glasses promise to foil CCTV cameras. Here's how.
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.
Whereas the majority of sighted people see a world with just a million colors, or fewer if you're color-blind.
It’s true: In 6 easy steps, you too can draw an impossible shape.
All colors that you see fall into the visible light spectrum. Learn about the colors in the visible light spectrum in this article.