infrared rays

Submitted by:Mohammed Hisham YakubComputer Science

1800 by Sir Frederick William Hershel Thought colors were associated with

heat Used 3 thermometers with blackened

bulbs (measure heat of different colors) Studied beyond red light. It was called “Calorific Rays”. Which is

now known as “Infrared Rays” in the late 19th Century.

Prism Mirror

Infrared (IR) light is electromagnetic radiation with a

wavelength longer than that of visible light, starting from the

nominal edge of visible red light at 0.7 micrometers, and

extending conventionally to 300 micrometers.

The Origination Of The WordThe Origination Of The Word

The name means below red, the Latin word

“infra” meaning "below". Red is the color of

the longest wavelengths of visible light.

Near-Infrared (0.7 µm – 1.4 µm)

Short-Infrared (1.4 µm – 3 µm)

Mid-Infrared (3 µm – 1000 µm)

Long-Infrared (8 µm – 15 µm)

Far Infrared (15 µm -1,000 µm)

Band Descriptor Wavelength Range

O Band Original 1260 – 1360 nm

E Band Extended 1360 – 1460 nm

S Band Short Wavelength 1460 – 1530 nm

C Band Conventional 1530 – 1565 nm

L Band Long Wavelength 1565 – 1625 nm

U Band Ultra long Wavelength 1625 – 1675 nm

Infrared light from the Sun only

accounts for 49% of the heating of the

Earth.

Objects at room temperature will emit

radiation.

Infrared light from the LED of an Xbox 360 remote control as seen by a digital camera. IR Filter in a Camera

IR Satellite picture Weather Map

Infrared Reflectograms.

The Arnolfini Portrait by Jan van Eyck, National Gallery, London

Used for treatment of chemotherapy induced oral ulceration as well as wound healing.

The Spitzer Space Telescope is a dedicated infrared space observatory currently in orbit around the Sun. NASA image.

NASA, ESA, ISAS are doing research in

space.

How planets, stars, galaxies are formed.

Finding new possible life on other

Planets.

Hazards to the eyes

and the vision.

Point – Point lasers

can cause burns.

Cancer and Leukemia.