Colour booklet

colour[2]These substances have the property of absorbinga particular part of the spectrum and reflectinganother. If we see a red object under whitelight, then this item contains a colour-givingsubstances which absorbs the yellow, orange,purple, blue and green components of the light.Only the red component is reflected back to oureyes. (ill. 2).And what about white, black and grey? In theory these are not colours. A white object contains a substancewhich does not absorb any colour in the spectrum. The whole spectrum is reflected. With blackwe see the opposite. No colour is reflected, all the colours in the spectrum are absorbed. Grey is somewherebetween white and black. Anequal quantity of each colour is reflected,the rest is absorbed. The reflectedcolours mix to become grey. The lighterthe grey (the further in the direction ofwhite), the more of each colour is reflected.And vice versa. (ills. 3, 4, 5).[3][4] [5]pagein 4