Curved reflectors
Man-made or artificial satellites are equipped with curved reflectors in order to make the signals they receive stronger. Curved reflectors will increase the strength of a signal for any type of wave 鈥 whether that鈥檚 Low frequency electromagnetic radiation used to transmit information such as television and radio programmes., microwaves, You can see this part of the spectrum. light, A high energy part of the electromagnetic spectrum associated with sunburn and skin cancer. or even sound.
As the waves reach the curved reflector, or satellite dish, they are reflected by the curved dish and brought to a focus on an aerial. By concentrating the The capacity of a system to do work or the quantity required for mechanical work to take place. Measured in joules (J). For example, a man transfers 100 J of energy when moving a wheelbarrow. from all of the waves reflecting from the dish onto the aerial, the signal it receives is made much stronger.