Wavelength

Can Cherenkov radiation make particles move faster than the speed of light?

Anti-seizure glasses for epileptics announced

Scientists at the Universities of Glasgow and Birmingham (UK) have just announced a prototype of special glasses that can block light wavelengths that cause seizures in…

Is color a property of matter or is it created in the brain?

Colors are both real and fictional. Light consists of different wavelengths of light.

What color is the mirror? 99% of people get it wrong!

Some people may think that a mirror has no color or that it is the color of whatever you look at it.

Why do people see mountains in the distance blue?

Although purple light is the light with the shortest wavelength, blue light is the light that people see most when looking away from the mountains.

Why is ultraviolet light used to kill bacteria?

For decades, germ-killing UV rays have been used to disinfect various objects and surfaces.

How does WiFi signal go through walls?

WiFi signals are a form of electromagnetic radiation, like visible light. Electromagnetic waves with wavelengths in the range of WiFi signals can pass through walls as e…

Why are lasers often only red?

Lasers are actually not only red, but there is a very good reason why they become the most popular laser today.

How does light help people explore the universe?

State-of-the-art technology can send people to the moon and satellites to the edge of the Solar System. But these distances are nothing to the vast interstellar space

Why is the turn signal light orange?

In 1938, the patent for the turn signal was officially granted, immediately the car and motorbike manufacturers equipped this system on their vehicles.

A rare pink rainbow appears in the sky

The photographer stumbled across the pink rainbow, a phenomenon that often occurs at sunrise and sunset, against a backdrop of blue skies in Scotland.

NASA's Spitzer telescope spotted a new galaxy

Spitzer Space Telescope has discovered galaxy NGC 5866 about 60,000 light-years in diameter - more than half the diameter of the Milky Way where people live.

Things to know about ultraviolet (UV)

Ultraviolet (UV) rays are a form of electromagnetic radiation, which helps the skin to synthesize vitamin D, stimulating the body's main activity.

Why is red related to danger? Explain you never heard of it before

Red is a color associated with danger. But what is the origin of this relationship?

Is this bag white or blue?

Social network users around the world are debating the true color of a bag that is photographed and posted on Twitter.