Dear Readers
My name is Anuj Kumar
(optometry
Light is a from energy whose interaction with retina the sensation of sight. thus, light is the visible portion the electromagnetic radiation spectrum. it lies between ultraviolet and infrared portion from 400 nm at the violet end of spectrum to 700 nm at the red end the white light consist of seven colours denoted by (VIBGYOR) (violet,indigo ,blue, green, yellow,orange and red).
Nature of Light
To understand the nature of light various theories have been put forward from time to time
No types rays Wavelength (in nm)
1. Cosmic rays 4x10 power 25
2. Electronic 2.7x 10 power 24
3. Gamma rays 6x10 power 25 to 0.14
4. X rays 0.14 to 13.6
5. Ultraviolet rays 13.6 to 379
6. Visible rays 379 to 723
a.violet 397 to 424
b.indigo 424 to 455
c.blue 455 to 492
d.Green 492 to 575
e.Yellow 575 to 585
f.Orange 585 to 647
g.Red 647 to 723
7. Infrared 723 to 1x10 to power 5
8. Wireless rays 1x10 to power 5 to 3x10 to power 13
a.Short 1x10 to power 5 to 1x10 to power 10
b.long 1x10 to power 10 to 3x10 to power 13
9. Electromagnetic Over 3x10 to power 13
( oscillations)
At present it has universally accepted that like matter, light also has dual nature; i.e. it possesses the characters of both the wave and the particle. the tow characters of its dual nature are complementary.
My name is Anuj Kumar
(optometry
Light is a from energy whose interaction with retina the sensation of sight. thus, light is the visible portion the electromagnetic radiation spectrum. it lies between ultraviolet and infrared portion from 400 nm at the violet end of spectrum to 700 nm at the red end the white light consist of seven colours denoted by (VIBGYOR) (violet,indigo ,blue, green, yellow,orange and red).
Nature of Light
To understand the nature of light various theories have been put forward from time to time
No types rays Wavelength (in nm)
1. Cosmic rays 4x10 power 25
2. Electronic 2.7x 10 power 24
3. Gamma rays 6x10 power 25 to 0.14
4. X rays 0.14 to 13.6
5. Ultraviolet rays 13.6 to 379
6. Visible rays 379 to 723
a.violet 397 to 424
b.indigo 424 to 455
c.blue 455 to 492
d.Green 492 to 575
e.Yellow 575 to 585
f.Orange 585 to 647
g.Red 647 to 723
7. Infrared 723 to 1x10 to power 5
8. Wireless rays 1x10 to power 5 to 3x10 to power 13
a.Short 1x10 to power 5 to 1x10 to power 10
b.long 1x10 to power 10 to 3x10 to power 13
9. Electromagnetic Over 3x10 to power 13
( oscillations)
At present it has universally accepted that like matter, light also has dual nature; i.e. it possesses the characters of both the wave and the particle. the tow characters of its dual nature are complementary.
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