verb. The definition of a chronicle is a record of things that have happened in the order which they happened. A US history book is an example of a chronicle. Chronicle means to gather facts and information about events which have happened.
A microwave oven is a type of oven that uses microwaves to heat up food. Microwaves are a type of electromagnetic wave that is sandwiched between radio wave and infrared radiation on the electromagnetic spectrum and their frequencies range between 300 MHz (0.3 GHz) and 300 GHz.
Microwaves and radio waves are used to communicate with satellites. Microwaves pass straight through the atmosphere and are suitable for communicating with distant geostationary satellites, while radio waves are suitable for communicating with satellites in low orbit. Radio waves and microwaves. Radio waves and microwaves are types of electromagnetic radiation. Both have communication uses. Radio waves are used to transmit television and radio programmes, while microwaves are used for mobile phones and Wi-Fi. However, they have different properties: Radio waves have longer wavelengths and are reflected by the ionosphere (part of the Earthâs atmosphere). Microwaves have shorter wavelengths and pass through the Earthâs atmosphere.