Infrared Definition - Infrared (IR) rays are electromagnetic wavelengths than visible light is between 700 nm and 1 mm. An infrared beam of light that is not visible. Infrared uses light to signals, such as TV remote to change the channel on the television. Infrared can not penetrate objects that prevented him from reaching the receiver or need reflection, because of its light. Infrared also serves as a medium to transmit data. For example, in cell phones.
Infrared is the first generation of wireless connection technology used for mobile devices. InfraRed itself, is an electromagnetic wave radiation with wavelengths longer than red tide, but shorter than radio waves, which is 0.7 micro-m up to 1 millimeter.
Infrared first discovered accidentally by Sir William Herschell (1738-1822), astronomer royal England when he was conducting research in search of optical filters that will be used to reduce the brightness of the image of the sun in the solar system.
Infrared rays have a frequency range of 1011 Hz to 1014 Hz or wavelength region 10-4 cm. While the wave of near infrared (near infrared) has a wavelength of about 0.7 micro-m up to 2.5 micrometer.
Infra red can be used also as a wave cariier that can extend the distance limit wave reception, but the transmitted wave to be line of sight (LOS) or straight-infrared can not turn if the radius of vertical transmit ter light barrier by an object even if it is transparent. This theory we apply the digital wave modulation on the remote tv.
Mobile is now integrated with infrared and blue tooth devices to communicate with a pc.
Examples of its application, namely the delivery of mobile applications pc or vice versa, takes note of the telephone number pc very much that it can not be stored in the phone memory is usually used for broadcasting sms.
What is the difference infrared light with blue tooth?
First, using infrared light to emit a signal, such as TV remote, while blue tooth uses radio frequency (RF) (2.4 GHz) to broadcasts its signal.
second, infra red can not penetrate objects that prevented him from reaching the receiver or need reflection, because of its light .However Bluetooth can penetrate objects such as walls so far do not have a high skin depth.