What is a newton's disc

A Newton disc is a disc with segments in rainbow colours. When the disc is rotated, the colors fade to white; In this way Isaac Newton demonstrated that white light is a combination of the seven different colours found in a rainbow. A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result. This is due to the phenomenon called persistence of vision. It can easily be board piece It was an important discovery as it proves that light is not colourless,but has colour in it which together converge to give a faded white colour which we consider colourless.It was made by Isaac Newton. This property is based on the principles of dispersion of light.

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Take a circular disk and divide it in 7 segments of equal area . Then give these 7colours  

Red 

Orange 

Yellow

Green

Blue

Indigo

Voilet

Now your disk is ready .This disk of 7colours is known as Newton's disk.If we rotate this disk we are anly able to see white colour.This shows as that light is made up of 7different colours.

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The disk which is comprised of 7 rainbow colours is known as Newton's Disk... If this disk is rotated with a high speed the disk gives the colour white... Hence it also clears that light is made up of 7 colours i.e. VIBGYOR .... You can also make this disk yourself by taking  a circular disk and u can paint or paste the coloured pages comprised of rainbow colours... now if you rotate this freely with a high speed  , you would see white light....

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the newton's disk , as the name suggests, was invented sir issac newton , which has 7 colours :-

  1. violet
  2. indigo
  3. blue
  4. green
  5. yellow
  6. orange
  7. red.

these 7 rainbow colours are present on it therefore, when it is rotated,it becoms white in colour.

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newton's disc is a cardboard disc which is divided into seven segments . each of these segments will be coloured differently (vibgyor). if the disc is rotated quickly the disc will appear white

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