Full screen

Share

3rd ESO EPVA
Noemí Lorenzo Pérez
Electro-
magnetic
waves
Colour is a sensation our brain perceives.
The surface of an object reflects some colours and absorbs all others. 
The colour we see is the one being reflected off by the object in form of electromagnetic waves.
Subtractive synthesis
Additive synthesis
Newton
COlOUR PERCEPTION
Want to make interactive content? It’s easy in Genially!

Over 30 million people build interactive content in Genially.

Check out what others have designed:

Transcript

COlOUR PERCEPTION

Newton

Additive synthesis

Subtractive synthesis

Colour is a sensation our brain perceives.The surface of an object reflects some colours and absorbs all others. The colour we see is the one being reflected off by the object in form of electromagnetic waves.

Electro-magneticwaves

Noemí Lorenzo Pérez

3rd ESO EPVA

If we mix colour of light, the original colour gets lighter and lighter until we get white. This is what we know as additive synthesis.

The primary colours in the additive synthesis are: Red, Green, Blue violet (RGB). The secondary colours in the additive synthesis are: Yellow (R + G), Magenta (R + B) and Cyan (G + B).

If we mix pigments (which absorb light), we obtain darker colour until we get black. We call the mixture of pigments subtractive synthesis.

The primary colours in the subtractive synthesis are: Cyan, Magenta, Yellow (CMYK). K is for black colour, which is short for Key. The secondary colours in the subtractive synthesis are: Red (M + Y), Green (Y + C) and Blue Violet (M + C).

It is measured in nanometres (nm).

Each colour has a wavelength. The human eye is only able to see waves that oscillate between about 380 and 780 nanometres; is is called the visible spectrum.

Show interactive elements