Page 30 - Nai Udaan march 2023

Science facts

Theory of

Colours

through light

G iallo, Azurro,Verde, Rosso……. These Vinci [c1490]. The first colour wheel

are all names of colours written by great
was developed by Sir Isaac Newton
artist Leonardo da Vinci. Giallo is
yellow, Azurro means blue and Verde around the start of the 7th Century. The
colour wheel was an arrangement of
means green where as Rosso stands for red, orange, yellow, green blue, indigo
red. and violet on a rotating disk. Since the
origination of the colour wheel by
Colour theory is one of the most Newton, it has become most powerful
fundamental areas of painting. The tools available to us for explaining the
importance of understanding colour relationship between colours.
theory far exceeds simply knowing
how to mix colours together [for Colour is a function of the visual
example, knowing that red and yellow system of us. Objects don’t have a
make orange]. Colour theory will help colour , it is the Light that appears to be
us understand the relationship between a colour. Colour exists only in the mind
colours and how we of the beholder .Colour is determined
perceive them. primarily by frequency and then by
how those frequencies are mixed or
General Principles combined when they reach the eyes.
of colour theory
were evident in This is the physics part of the
writings of Leone topic. Light falls on receptor cells
Battista Alberti (cones) at the back of the eye (retina)
[c.1435] and the note and a signal is sent to the brain by
books of Leonardo Da optic nerve.

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