 - Infrared radiation (IR) or the term infrared alone refers to energy in the region of the electromagnetic radiation spectrum at wavelengths longer than those of visible light,but shorter than those of radio waves. Correspondingly, the frequencies of IR are higher than those ofmicrowaves, but lower than those of visible light.Scientists divide the IR spectrum into three regions. Thewavelengths are specified in microns (symbolized µ, where 1 µ = 10-6 meter)or in nanometers (abbreviated nm, where 1 nm = 10-9 meter = 0.001 µ). The near IR band contains energy in the range of wavelengths closest to thevisible, from approximately 0.750 to 1.300 µ (750 to 1300 nm). The intermediateIR band (also called the middle IR band) consists of energy in the range1.300 to 3.000 µ (1300 to 3000 nm). The far IR band extends from 2.000 to14.000 µ (3000 nm to 1.4000 x 104 nm). Infrared is used in a variety of wirelesscommunications, monitoring, and control applications. A few of the applications include home-entertainment remote-control boxes, wireless local area networks, links between notebook computers and desktop computers, cordless modems, intrusion detectors, motion detectors, and fire sensors
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Learn more about Network Administration |
| Networking FAQ: These FAQs for networking will help you learn networking basics. |
| Network user management: Use this guide to learn how to manage problem users on your network -- from un-savvy Internet novices to toxic bosses -- to keep your network secure. |
| Troubleshooting -- 'Network Know-How' Chapter 17: Troubleshooting, Chapter 17 of 'Network Know-How,' shows tools and methods that identify and solve network problems. Use this chapter as a tutorial to fixing computer connections. |
| Network management frameworks: FCAPS and ITIL: Network management is a complex topic. Thus far, two frameworks exist that can be of some use for understanding and taming network management: FCAPS and ITIL. |
| Networking podcasts: Listen to our networking podcasts and learn more about technologies you need to know to keep your network running smoothly. |
| The IT Guy: Networking comics: In our networking comic series, the IT guy and his office coworkers encounter day-to-day network challenges. |
| LAST UPDATED: |
18 Apr 2007
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