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.
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Viking Warrior in Ancient Grave Was a Woman
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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?
How to Calculate the Percent Error Formula
What Is the Area Formula for a Rectangle, a Triangle and a Circle?
How to Subtract Fractions
Kummakivi, Finland's Balancing Rock, Seems to Defy the Laws of Physics
What Is Energy?
Could Newly Measured W Boson Break the Standard Model?
U.S. Scientists Achieve a Breakthrough in Nuclear Fusion. What Does That Mean?
Hisashi Ouchi Suffered an 83-day Death By Radiation Poisoning
Could Thorium Power the Next Generation of Nuclear Reactors?
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.