Answer: Radio waves can be used to power things like lightbulbs but can also be used to send and receive information.
Radio waves are a type of electromagnetic radiation that have wavelengths that are longer than those of visible light. They are used for a variety of purposes, including broadcasting of radio and television signals, transmitting and receiving of wireless communication signals, and navigation.
Radio waves can be used to power devices such as lightbulbs by converting the energy carried by the radio waves into electricity using a device called a radio-frequency (RF) converter. This type of converter is commonly used in devices that are powered by batteries or solar panels and need to be remotely activated or controlled.
In addition to their use in powering devices, radio waves are also used to transmit and receive information. For example, radio waves are used in wireless communication devices such as cell phones and radios, as well as in satellite communication systems. They are also used in radar systems, which rely on the reflection of radio waves to detect objects and determine their distance and velocity.
Overall, radio waves are a versatile and important tool that have a wide range of applications in a variety of fields.