This page compares radio frequency waves and light waves and mentions difference between radio waves and light waves. Wifi is based on radio signal waves (EM waves) where as Lifi is based on light signals. Show
Introduction: What are radio frequency waves ?These are EM signals which occupy 3 KHz to 300 GHz. Radio frequency waves are at much lower frequencies compare to microwave frequencies. The radio waves transmitted by antenna use wavelengths of about 1 mm to 100 meters. They are used for various applications such as cellular communication, radio and TV broadcasting, satellite communication, WLAN (i.e. wifi), Zigbee and so on. The unit of radio frequency signal is in Hertz (Hz). It is number of oscillations or cycles per second. The equation below is the relationship of its wavelength and frequency. Following is the typical system used for radio transmission and reception. The transmitter part and receiver part consists of following components. Before radio frequency waves are transmitted by antenna, they go through modulation, up conversion and power amplification as per different system requirements. Similarly, radio waves are processed after it is received at the receiver by antenna. They go through various modules such as LNA, down conversion and demodulation. What are light waves ?These are EM waves which occupy 430 THz to 790 THz frequency range. The light waves occupy wavelengths from 380 nm to 750 nm. LEDs, lasers or fluorescent bulbs are used as transmitter of light waves where as photodiode detectors are used as receivers. Refer LiFi tutorial >> for more information. Data bits are modulated by light waves before transmission. Difference between radio waves and light waves Following points summarize major difference between radio frequency waves and light waves. Difference between wifi and lifiThe Following table summarizes the major comparison between wifi and lifi technologies based on various specifications. Refer LiFi vs WiFi >> for more difference between lifi and wifi technologies which are based on radio frequency waves and light waves respectively. LiFi and WiFi Related Links LiFi tutorial What is difference between difference between FDM and OFDM RF and Wireless TerminologiesShare this pageTranslate this pageWhat is the main difference between a radio wave and a light wave quizlet?Radio waves, visible light, and gamma rays differ in wavelength, frequency, and energy. Radio waves have a long wavelength, low frequency, and low energy. Visible light falls in the middle of the electromagnetic spectrum and has wave characteristics that are in between those for radio waves and gamma rays.
What is the difference between wave and light?Light waves are electromagnetic waves while sound waves are mechanical waves. Light waves are transverse while sound waves are longitudinal. Light waves can travel in vacuum. Sound waves require a material medium to travel, and hence, cannot travel in vacuum.
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