Infrared (IR) communications are very commonly used in the remote-control industry for transmitting and receiving wireless signals from one device to another device. To understand better, think of the ambient light around us; it contains various types of light, where each type of light has a different wavelength.
The study of light itself is a large topic; however, it would be good to know a few basics when trying to work with Infrared communications. Light that is visible to the human eye falls in the wavelength range of 400 nm to 700 nm (where nm is the abbreviation for nanometer) - this is known as the visible spectrum of ambient light. IR light is not visible to the human eye and falls in the wavelength range of 700 nm to 1 mm. Infrared light has a longer wavelength and is not visible to the human eye. Since IR light is not visible to...
