Infrared Waves
Published on Nov 28, 2015
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PRESENTATION OUTLINE
WHAT ARE INFRARED WAVES?
They are electromagnetic waves in the wavelength band between 10^-6m and 10^-3m that can be used to transfer heat from a hot object to a cool object.
Photo by Gordana AM
FREQUENCY & WAVELENGTH RANGES
Frequency:300GHz to 1THz
Wavelength:800nm to 1nm
Untitled Slide
WHO DISCOVERED INFRARED WAVES?
Sir Frederick William Herschel
WHEN WERE INFRARED WAVES DISCOVERED?
Herschel made this dramatic discovery in 1800. He wanted to know how much heat was passed through the different colored filters he used to observe sunlight. He noted that filters of different colors seemed to pass different amounts of heat. Herschel thought that the colors themselves might be of varying temperatures and experimented in finding more information.
Where were these waves discovered?
Herschel lived in England with his sister Caroline where they built telescopes. There he found the planet Uranus & later founded Infrared Waves.
Where do infrared waves originate in nature?
Infrared waves can be found in sunlight,fire,a radiator or a hot sidewalk.
Photo by kevin dooley
