I would guess copper. But it could be magnesium.
remote controls
Remote controls use both infrared and radio frequency technologies. Your typical TV remote uses infrared and your typical car remote uses RF.
battery's for lighting, remote controls etc.
Remote controls Heating Covert lighting
There are two main types of remote controls used for operating garage door openers: handheld remote controls and wall-mounted keypads. Handheld remote controls are small devices that can be carried around and used to open and close the garage door from a distance. Wall-mounted keypads are typically installed near the garage door and allow users to enter a code to open and close the door.
The offline retailers that possibly sell universal TV remote controls are the Argos, Currys and Walmart. Universal TV remote controls are used to control TV and other satelite related audio and video devices.
Remote controls are designed to operate with specific devices. Normally, a television remote control will not have the buttons to operate a DVD player. However, some manufacturers have television remote controls with DVD controls built in and a player from the same manufacturer can be controlled by the same remote. In addition, there are several third party remote controls that can be programmed to operate a wide variety of devices allowing one control to operate several different pieces of equipment.
It can be a noun or a verb, depending on how it is used. Noun: The sound system required two separate remote controls. Verb: She always controls her emotions.
Infrared rays are used in television remote controls
Infrared radiation is used in a variety of applications, such as thermal imaging cameras, remote controls, infrared saunas, and night vision goggles. It is also commonly used in industrial processes for heating, drying, and curing materials.
Transistors are used in any electrical somponent including amplifiers, remote controls etc.
Infrared light is used in remote controls to transmit signals to electronic devices by converting electrical signals into infrared light pulses. These pulses are then sent from the remote control to a receiver on the electronic device, which decodes the pulses and carries out the corresponding command, such as changing the channel on a TV or adjusting the volume on a stereo.