Name of
Region
Wavelength
Range (in m, μm,
and nm)
Frequency Range
Technological
Applications /
Role in Nature
Ga...
 Light is a particular type of electromagnetic radiation that can be
seen and sensed by the human eye, but this energy e...
of 2

Name of region

Published on: Mar 3, 2016
Source: www.slideshare.net


Transcripts - Name of region

  • 1. Name of Region Wavelength Range (in m, μm, and nm) Frequency Range Technological Applications / Role in Nature Gamma Rays 10-14 to 10-10 m 10-8 to 10-4 μm 10-5 to 10-1 nm 3x1022 to 3x1018 Hz Radiation therapy X - Rays 10-14 to 10-8 m 10-8 to 10-2 μm 10-5 to 10 nm 3x1022 to 3x1016 Hz Radiation therapy; diagnosis (lower frequencies) Ultraviolet Rays 10-8 to 4x10-7 m 10-2 to 0.4 μm 10-5 to 400 nm 3x1016 to 0.75x1016 Hz Tanning; Promotes production of Vitamin D in human skin; photosynthesis in plants Visible Light 4x10-7 to 8x10-7 m 0.4 to 0.8 μm 400 to 800 nm 0.75x1016 to 0.375x1016 Hz Lamps for seeing (Eyes respond to this range) Infrared 8x10-7 to 10-3 m 0.8 to 103μm 800 to 106 nm 0.375x1016 to 3x1011 Hz Infrared photography Radio Waves 10-4 to 106 m 3x1012 to 300 Hz Communication devices Table 1: Regions of the entire electromagnetic spectrum and general applications.  In order of decreasing frequency (and increasing wavelength), the various regions of the electromagnetic spectrum are: gamma rays , x-rays ,ultraviolet , visible light , infrared , microwaves , and radio waves .  Electromagnetic energy from the sun consists mostly of a small amount of ultraviolet, all visible light, and some infrared.
  • 2.  Light is a particular type of electromagnetic radiation that can be seen and sensed by the human eye, but this energy exists at a wide range of wavelengths.  The micron is the basic unit for measuring the wavelength of electromagnetic waves.  The spectrum of waves is divided into sections based on wavelength. The shortest waves are gamma rays, which have wavelengths of 10e-6 microns or less. The longest waves are radio waves, which have wavelengths of many kilometers.  The range of visible consists of the narrow portion of the spectrum, from 0.4 microns (blue) to 0.7 microns (red).

Related Documents