Search results for “emit”

What is radioactivity

You don't see it, and you don't feel it: radiation. Nevertheless, humans are always exposed to radiation. Shielding makes sense. Natural radioactive substances in soils and rocks emit radiation. And it comes not only from the earth, but also from heaven. The higher, the stronger the cosmic rays. I

Infrared: More Than Your Eyes Can See

The electromagnetic spectrum, spanning energies and wavelengths from radio waves to gamma rays, encompasses all forms of light. Infrared radiation, located in the range just beyond visible light, is emitted by all matter and is very useful in gathering data about Earth and space. In this video segme

The Electromagnetic Spectrum

In this video from NOVA’s Sun Lab, examine how scientists use electromagnetic radiation to learn about the Sun. The process of nuclear fusion in the core of the Sun produces energy in the form of electromagnetic radiation, or light. The wavelength of photons (particles that carry electromagnetic ene