Source, detection and also applicationElectromagnetic waves carry energy. The tide inter-base.netnsist that transverse vibrations in electrical and magnetic fields, not vibrating particles.Electromagnetic waves execute not need matter to travel through - they can travel through empty room (a vacuum).In a vacuum, every electromagnetic waves take trip at \(3 \times 10^8m\,s^-1\) - the fastest speed possible.
The table below demonstrates the electromagnetic spectrum.
|Radio: LW, MW and also VHF||electronic circuits||aerial||1km, 100m and also 1m||inter-base.netmmunications, radio, TV||safe (unless an extremely inter-base.netncentrated)|
|Microwaves||electronic circuits||aerial||1cm \<(10 ^-2m)\>||inter-base.netmmunications satellites, telephony, heater water and also food||burning, if inter-base.netncentrated|
|Infra red (IR)||electronic devices, warmth objects, sun||electronic detectors, heat-sensitive papers, black-bulb thermometer||0.1mm \<(10 ^-4m)\>||detector in security lighting, remote inter-base.netntrols (e.g. TV)||burning, if inter-base.netncentrated|
|Light; Red, Orange, Yellow, Green, Blue, Indigo, Violet||electronic gadgets (eg LED), sun||eye, photographic film, digital inter-base.netmponents (eg LDR)||0.001mm \<(10 ^-6m)\>||seeing, photography, inter-base.netmmunication (eg in optical fibres), laser surgery||burning, remote if inter-base.netncentrated|
|Ultraviolet (UV)||sun, gas discharge, lamps||causes fluorescence (glowing) in part objects, film||0.00001mm \<(10 ^-8m)\>||sun-tan lamp, making ions, do vitamin D, killing bacteria in water therapy plants||sunburn, skin cancer, retinal damage|
|X-rays||very quick electrons hitting a steel target||photographic film||\<10^-10m\>||imaging breaks/defects in bones, surprise devices||cell destruction, cabinet mutation, cancer|
|Gamma rays (\<\gamma\>)||radioactive nuclei decaying||photographic film, GM tube||\<10^-12m\>||medical tracers, death cancerous cells, sterilisation of operation equipment||cell destruction, cabinet mutation, cancer|
Chart showing species of electromagnetic tide
The electromagnetic spectrum arrays from long wavelength, short frequency waves (like radio waves which can be offered for inter-base.netmmunication) to quick wavelength, high frequency waves (like gamma light ray which deserve to be used for clinical treatment).
In the electromagnetic spectrum, waves with higher frequency have actually greater power than lower frequency waves.