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How We Use Microwaves
Microwaves are basically high frequency radio waves. Microwaves have many interesting uses. The most well-known is for cooking food in microwave ovens. Microwaves are also used in radar systems like speed sensors and weather predicting systems. Radar works by sending out microwaves and seeing what they bounce off of and how quickly they bounce back. Microwaves are also used to send messages from our cell phones.
What We Can Learn From Microwaves
Microwave telescopes can help scientists locate objects you can't see with the human eye like black holes. Scientists can also use microwaves to study the structure of galaxies because the center of each galaxy is a massive microwave source. Microwaves are also used to study the Big Bang since there are leftover microwaves from that ancient event called Cosmic Microwave Background Radiation. This radiation helps us study the expansion and shape of our universe.
Microwave Images
A microwave image of the Milky Way Galaxy.
Other Info
Microwaves can cook food because they cause water molecules to vibrate more quickly. Most foods contain water and when any molecules vibrate more quickly they heat up, which will heat up the rest of the food too.
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