What is the nature of electromagnetic radiation?
EM radiation is so-named because it has electric and magnetic fields that simultaneously oscillate in planes mutually perpendicular to each other and to the direction of propagation through space. ✓ Electromagnetic radiation has the dual nature: its exhibits wave properties and particulate (photon) properties.
What is the basic source of electromagnetic radiation?
Answer 1: The most obvious source of electromagnetic energy and radiation is the sun. The sun provides the initial energy source for much of the remote sensing of the Earth surface. The remote sensing device that we humans use to detect radiation from the sun is our eyes.
How is electromagnetic radiation classified?
Generally, electromagnetic radiation is classified by wavelength into radio wave, microwave, infrared, visible light, ultraviolet, X-rays and gamma rays. The behavior of EM radiation depends on its wavelength. A common laboratory spectroscope can detect wavelengths from 2 nm to 2500 nm.
What does electromagnetic radiation do to your body?
Some members of the public have attributed a diffuse collection of symptoms to low levels of exposure to electromagnetic fields at home. Reported symptoms include headaches, anxiety, suicide and depression, nausea, fatigue and loss of libido.
What are the 4 main properties of electromagnetic waves?
1 Answer
- They are transverse in nature.
- They consist of oscillating electric (E) and magnetic (B) field vectors at right angles to each other and at right angles to the direction of propagation of the wave.
- They can travel through a vacuum.
- They travel at the speed of light in vaccuum, c=3×108m/s.
What is electromagnetic radiation in simple words?
In layman’s terms electromagnetic radiation is light that travels by oscillating in waves at a constant speed carrying energy. In layman’s terms, light travels by oscillating in waves at a constant speed carrying energy – interactions with objects vary depending on the energy these waves carry.
What is electromagnetic radiation in geography?
Electromagnetic radiation is a form of energy emitted by all matter above absolute zero temperature (0 Kelvin or -273° Celsius). X-rays, ultraviolet rays, visible light, infrared light, heat, microwaves, and radio and television waves are all examples of electromagnetic energy.
What are two natural sources of electromagnetic radiation?
solar radiation, in other words natural radiation that originates from the sun. terrestrial radiation, in other words natural radiation emitted by the Earth’s surface.
What is electromagnetic radiation in chemistry?
Electromagnetic radiation consists of two perpendicular waves, one electric and one magnetic, propagating at the speed of light (c). Electromagnetic radiation is radiant energy that includes radio waves, microwaves, visible light, x-rays, and gamma rays, which differ in their frequencies and wavelengths.
Why is electromagnetic radiation harmful?
Ionizing radiation can damage the body’s DNA and cells, which may contribute to genetic mutations and cancer. On the other end of the spectrum is extremely low-frequency (ELF) radiation.
Are all electromagnetic waves harmful?
Over-exposure to certain types of electromagnetic radiation can be harmful….The three main types of ultraviolet radiation and some of their effects.
| Type | Frequency | Hazard |
|---|---|---|
| UVC | High | Causes severe damage to cells |
| UVB | Medium | Causes severe sunburn and damage to cells |
| UVA | Low | Weaker effects than UVB |
What are the particles of electromagnetic radiation called?
Electromagnetic radiation can be described in terms of a stream of mass-less particles, called photons, each traveling in a wave-like pattern at the speed of light. Each photon contains a certain amount of energy.
9 Electromagnetic radiation has the dual nature: its exhibits wave properties and particulate (photon) properties. ¾ Wave nature of radiation: Radiation can be thought of as a traveling transverse wave.
What is the speed of electromagnetic radiation called?
Electromagnetic Radiation. Electromagnetic radiation is an electric and magnetic disturbance traveling through space at the speed of light (2.998 × 108 m/s). It contains neither mass nor charge but travels in packets of radiant energy called photons, or quanta.
Does electromagnetic radiation eject electrons from the atom?
However, ionizing electromagnetic radiation has enough energy to eject one or more electrons from the atom. X-rays and gamma rays, whose properties are equivalent, are clinically the most important form of ionizing electromagnetic radiation in the treatment of cancer.
Why is it called EM radiation?
EM radiation is so-named because it has electric and magnetic fields that simultaneously oscillate in planes mutually perpendicular to each other and to the direction of propagation through space. 9 Electromagnetic radiation has the dual nature: its exhibits wave properties and particulate (photon) properties.