Cosmic Microwave Background
Credit: NASA/WMAP Science Team
Discovery
'Microwaves' were first produced and studied by Hertz in 1886. However, their practical application was realised only on creating suitable generators.
Video on Microwaves
Microwave to Destroy Tumours
- Read here an article on Microwave surgeryDeploying minimally invasive technique to destroy tumours
Sweetsearch
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Properties of micro wave
Microwaves have wavelengths more than that of infrared waves, but less than that of radio waves.
Microwaves can penetrate clouds of smoke,haze, light rain and snow, hence used to transmit information.
The longer waves are used for heating our food, Shorter microwaves are used for mapping meteorologic disturbances and in weather forecasting.
Microwave technology is highly efficient in converting electricity into MicroWaves and saves energy with rapid, in-depth heating of materials
Applications
In a Microwave oven, the waves generated are of a frequency that can be absorbed by the water and fat in the food. Microwave ovens are becoming a very popular means of heating and cooking food quickly. Check out here how a microwave oven works....
Radar is an application of microwave technology - to detect objects by transmitting short bursts of microwaves and measuring the strength and origin of "echoes" received from them.
That dirty motor oil that comes out of your car or truck engine during oil changes could end up in your fuel tank... read about new process for recycling waste crankcase oil into gasoline-like fuel
More Applications of Microwaves....
- Applying Microwaves in Drugs preparationThis article examines the application of microwave to prepare pharmaceutical dosage forms such as agglomerates, gel beads, microspheres, nanomatrix, solid dispersion, tablets and film coat.
- Microwave filtering of OilThis paper describes a method using microwave to demulsify
oil to remove naphthenic acid. - Using microwaves to modify woodMicroWave wood modification technology provides a number of commercial applications like Treatment of refractory wood species with preservatives, Rapid drying of hardwoods...
Read about Risks and Dangers
" Beyond certain temperatures, microwaves can harm living tissue - hence prolonged exposure should be avoided "
"In extreme cases, the chemical balance of the brain can be upset if the frequencies equal the brain wave frequencies. "
What do studies reveal about the above two statements ? Read more from the links below...
- Microwave information and SafetyAbout microwaves, cooking with them, safety
- Cell Phones, Microwaves and the Human HealthThe microwaves that cell phones emit can interact with human tissue in an entirely new way, says theoretical biologist at a government lab..
- How Wireless technology can affect the bodyTexting or emailing on the go can send waves of radiation into the environment and our bodies
- Cellular phones effectsThe effects of exposure to cellular phones...
- Cellphone radiation may alter your brain?An article from the NY Times
Did you know??
Did you know that if you had a sensitive microwave telescope in your house that you would detect a faint signal leaking out of your microwave oven, and from various other man-made sources, but also a faint signal coming from all directions that you pointed it? This is the Cosmic Microwave Background!
source: http://science.hq.nasa.gov/kids/imagers/ems/micro.html