What are they?
infrared rays are a form of energy wave invisible to the human eye and are emitted by all objects at varying levels of intensity as heat. It is the only part of the EM spectrum that can be felt. its wavelength is slightly longer and its frequency smaller than the colour red on the visible light spectrum, thus the given name of 'infrared' ('infra' meaning below the frequency of red).
In communications
Infrared wireless technologies uses pulses of infrared to transmit data. Detecting IR is easier than radio or microwave because waves of heat can be detected by special sensors. However, in order to transmit information contained in infrared signals, the transmitter and receiver must be within direct range of each other as heat (IR) is easily absorbed around us, losing some of its signal.
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Transformation speed is quicker as the infrared signals do not to travel far between devices, allowing smooth, consistent communications.
Because of its ability to be easily detected, transmitted and received, it is ideal for short-range communications between electronic devices. Its line-of-sight limitations affects its potential, therefore this part of the spectrum is most effectively used in communications technology by devices which remain close to each other.
Because of its ability to be easily detected, transmitted and received, it is ideal for short-range communications between electronic devices. Its line-of-sight limitations affects its potential, therefore this part of the spectrum is most effectively used in communications technology by devices which remain close to each other.
Uses of Infrared Rays
- Night Vision: infrared radiation can be used to navigate in the dark as it uses the detection of varying amounts of heat emitted by both living and non living objects. it also enables infrared video recording and image capturing which can be used in documenting nocturnal animals and security systems.
- Thermography: basically the usage of infrared technology to determine how hot things are by the degree of detecting ther amount of radiation they are emitting.
- Tracking Technology: objects, commonly missiles, can be sent to follow a target based on their infrared radiation.
- Meteorology: weather satellites use infrared technology to determine water temperature and cloud formation.
- Heating: infrared is extremely useful for creating and conducting heat without fire.
- Remote controls, multiple gaming consoles, wireless keyboards, data links.
Advantages
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Disadvantages
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