1 résultats pour "microwaves"

• MICROWAVES

  Microwaves How they’re made Microwaves are basically extremely high frequency radio waves, and are made by various types of transmitter. In a mobile phone, they're made by a transmitter chip and an antenna, in a microwave oven they're made by a "magnetron". Their wavelength is usually a couple of centimeters. Stars also give off microwaves. Uses Uses Microwaves cause water and fat molecules to vibrate, hich makes the substances hot. So, we can use microwaves to cook many types of f...