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- All electromagnetic radiation is light, but we can only see a small portion of this radiation—the portion we call visible light. Cone-shaped cells in our eyes act as receivers tuned to the wavelengths in this narrow band of the spectrum.
science.nasa.gov/ems/09_visiblelight
Feb 24, 2016 · 3 Answers. There are two effects of electromagnetic waves on human body. Heating effects, occurring mostly around 2.45 GHz (which is the frequency used in microwave ovens) Ionizing effects, which can damage human body and cells. Here is a picture of how the radiowaves penetrate the human body according to the frequency.
There are many sources of light. A body at a given temperature emits a characteristic spectrum of black-body radiation. A simple thermal source is sunlight, the radiation emitted by the chromosphere of the Sun at around 6,000 K (5,730 °C; 10,340 °F).
- What Is Electromagnetic Radiation?
- What Is The Difference Between Ionizing and Non-Ionizing Radiation?
- What Is Particle Radiation?
Electromagnetic radiation (EMR) consists of waves. The waves contain electric and magnetic energy. The electromagnetic spectrum (EMS) includes different types of energy waves. At one end of the spectrum, there are very low energy waves. Radio waves are an example of low energy waves. At the other end of the spectrum, there are very high energy wave...
Radiation can be either non-ionizing or ionizing. 1. Non-ionizing radiation doesn’t have enough energy to ionize atoms or molecules. That means it can’t cause atoms to gain or lose electrons. There are several types of non-ionizing radiation. They include near ultraviolet light, visible light, infrared radiation, microwaves and radio waves. Even if...
Particle radiation is made up of atomic or subatomic particles. These particles include protons, neutrons and electrons. They all have kinetic energy. That’s the energy is the energy an object has when it’s in motion. Both alpha particles and beta particles produce ionizing radiation. The charge they carry can remove electrons from atoms. They can ...
Nov 14, 2024 · light, electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10 −11 metre to radio waves measured in metres.
Apr 8, 2008 · Ultraviolet rays, visible light, infrared radiation, and microwaves fall at energy levels in between. Together, all of these make up one long, continuous electromagnetic spectrum of light. Its energy travels in what are usually referred to as waves.
Aug 10, 2016 · All electromagnetic radiation is light, but we can only see a small portion of this radiation—the portion we call visible light. Cone-shaped cells in our eyes act as receivers tuned to the wavelengths in this narrow band of the spectrum.
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Aug 10, 2016 · Electromagnetic radiation is reflected or absorbed mainly by several gases in the Earth's atmosphere, among the most important being water vapor, carbon dioxide, and ozone. Some radiation, such as visible light, largely passes (is transmitted) through the atmosphere.