MICROWAVES

Microwaves are extremely high frequency radio waves that are created by various transmitters.

How does microwaves take part in our cooking?

Microwaves are used in our everyday microwave oven. They are used in a microwave oven because they penetrate deep into the food cooking it thoroughly. If we used visible light we would end up with a browned outside and a raw inside.

APPLICATIONS

• Cooking
• Phones (penetrates the earths at atmosphere)
• Medicine (used as an alternative to surgery)
• Industry (clean up)
• Science (separating chemical compounds)

DANGERS

• Prolonged exposure can cause cataracts on your eyes. (that's why you're not supposed to stand right in front of a microwave, when cooking your food)
• Small doses of microwaves from phones can damage your brain.
• The microwaves that are in a microwave ovens change the molecular structure of your food, the food could effect your body differently.

The wavelength of a microwave is 1millimeter to 1meter. A meter is the size of a meter stick or 3.2 feet. A millimeter is the thickness of your thumb nail or a piece of paper.

The frequency of a microwave is 300 MHz (100cm) to 300 GHz (0.1cm)

"The origin of the micro wave started with James Maxwell Clark in 1864. In this year Clark developed a theory that light and a magnetic field could be combined and travel at the speed of light. Later his theory was found true and was the start of electromagnetic waves, including radio waves."

Untitled Slide

Untitled Slide

Untitled Slide

SOURCES

• Www.livescience.com
• Www.globalhealingcenter.com
• Www.wikipedia.com
• Www.physics.stackexchange.com
• Www.sciencewithkids.com