Terahertz radiation Guide, Meaning , Facts, Information and Description

Also known as

• T-rays
• T-light
• T-lux

Radio waves sent at terahertz frequencies, known as terahertz radiation or terahertz waves, are in a waveband that is the overlap of what is normally regarded as microwave radiation (mm wavelength) and far-infrared light (hundredths of mm).

Like infrared radiation or microwaves, these waves usually travel in line of sight. Terahertz radiation is non-ionizing and shares with microwaves the capability to penetrate a wide variety of non-conducting materials. They can pass through clothing, paper, cardboard, wood, masonry, plastic and ceramics. They can penetrate fog and clouds but can't penetrate metal or water

The Earth's atmosphere is a strong absorber of terahertz radiation, so the range of terahertz radiation is quite short, limiting their usefulness. In addition, producing and detecting coherent terahertz radiation was technically challenging until the 1990s. As of 2004 the only source of teraherz radiation is a free electron laser (FEL). Recent technologies using terahertz radiation have been developed, which are intended for applications such as medical imaging and surveillance (such as security screening to uncover concealed weapons remotely).

References

• Revealing the Invisible Ian S. Osborne, Science 16 August 2002; 297: 1097
• Article in Nature Nov 14, 2002 (local copy of the Jefferson Lab)
• News and Views in Nature Nov 14, 2002 (local copy of the Jefferson Lab)

External links

• Terahertz radiation: applications and sources by Eric Mueller
• Blinded By The Light At 20,000 THz

This is an Article on Terahertz radiation. Page Contains Information, Facts Details or Explanation Guide About Terahertz radiation

	Web www.E-paranoids.com