25a 15a 6ab 1a0 b9a d34 b4a 5e3 0e8 8ef 2f4 be9 591 151 9c5 61a 38d fbd 5c2 f0b 60e dcb 657 23c eb0 840 3cc 931 7eb dd3 ed0 feb 203 1b9 f86 279 3c4 faf 0ff e5f 5cb 41f 4df 25c 2d3 9cf 101 a76 685 6f8 6b8 e21 965 544 ec1 dcd edf ed8 1bb 4fb 579 d71 993 2fa 2f0 789 341 9b3 1d1 85b 12e c05 f2b bab 17e 960 956 85f 163 e41 e7c 85d 687 90e d29 801 cae 8c0 b18 ab6 da0 745 3f1 db1 e0b 292 10c e28 fa3 c33
The electromagnetic spectrum is comprised of all frequencies of electromagnetic radiation that propagate energy and travel through space in the form of waves. Longer wavelengths with lower frequencies make up the radio spectrum. Shorter wavelengths with higher frequencies make up the optical spectrum.Jun 27, 2018
What are EM waves made of?
Definition: Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.
What does the EM spectrum consist of?
The entire electromagnetic spectrum, from the lowest to the highest frequency (longest to shortest wavelength), includes all radio waves (e.g., commercial radio and television, microwaves, radar), infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
How do we use EM spectrum?
Electromagnetic waves have a vast range of practical everyday applications that includes such diverse uses as communication by cell phone and radio broadcasting, WiFi, cooking, vision, medical imaging, and treating cancer.
Where does the electromagnetic spectrum come from?
The EM spectrum is a range of frequencies that corresponds to all different forms of electromagnetic radiation in the universe. It begins at the highest frequencies, where the waves are most stretched out (low frequency) to very tightly packed waves (high frequency).
Is electromagnetic radiation harmful?
Despite extensive research, to date there is no evidence to conclude that exposure to low level electromagnetic fields is harmful to human health. The focus of international research is the investigation of possible links between cancer and electromagnetic fields, at power line and radiofrequencies.
How are EM waves propagated?
The changing magnetic field, in turn, induces an electric field so that a series of electrical and magnetic oscillations combine to produce a formation that propagates as an electromagnetic wave.
Is electromagnetic radiation light?
Radio waves, gamma-rays, visible light, and all the other parts of the electromagnetic spectrum are electromagnetic radiation. 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.
What does ionizing radiation Remove from atoms?
Ionizing radiation is a form of energy that acts by removing electrons from atoms and molecules of materials that include air, water, and living tissue.
How safe are electromagnetic waves?
Despite extensive research, to date there is no evidence to conclude that exposure to low level electromagnetic fields is harmful to human health. The focus of international research is the investigation of possible links between cancer and electromagnetic fields, at power line and radiofrequencies.
