How are microwaves produced ? How can they detected ?

How are radio waves produced ? How can they detected ?

How microwaves are produced ?

How are infrared rays produced ? How they can be detected ?

How is ozone detected ?

How are microwaves produced ? Why is it necessary in microwave ovens to select the frequency of microwaves to match the resonant frequency of water molecules ?

How are RFLPs detected ?

How is hydrogen detected?

How does a microwave oven work?