Question

15 minutes presentation on principle working and construction of a Newton disc​

Answer 1

Answer:

Newton's disc is a disc with segments in painted in rainbow colours, i.e. violet, indigo, blue, green, yellow, orange and red, in that order.  When the disc is rotated, the colors fade to white;  Isaac Newton used this disc to demonstrate that white light is a combination of the seven different colours found in a rainbow.