Tag: Optical source

Science > Physics > Communication > Communication Channel: Line Line Communication: Space communication is unguided communication. In this communication channel, there is no physical contact between the transmitting and the receiving antenna. The transmitted signal spreads in all directions. This results in the attenuation of the signal. To avoid the attenuation we use line communication. […]

Science > Physics > Communication > Satellite Communication Radio Communication uses ground wave, skywave, and space wave propagation. Ground wave and space wave communication are restricted to small distances, whereas skywave propagation uses frequencies ranging from 3 MHz to 30 MHz. Very high frequency (> 30 MHz) and microwave communication over long distances use a Satellite. […]

Science > Physics > Communication > Communication Channel: Atmosphere A communication channel is a link connecting a transmitter and a receiver. It is the physical medium which carries the signal from the transmitter to the receiver ideally without any noise or distortion. The atmosphere, optical fibres, parallel wires, coaxial cables, etc. are used as communication […]

Science > Physics > Communication > Terminology of Communication System In this article, we are going to study the terms used in the communication system and the concept of the bandwidth of a signal. Transducer: Any device that converts one form of energy into another can be termed as a transducer. Example: A microphone is […]

Science > Physics > Communication > Communication System Communication is the process of exchange of information between two entities. It involves sending, receiving and processing information. Thus there is a transmission of information from a source at one place to a receiver located at another place. The communication system is a device or setup used […]