electromagnetic spectrum Flashcards
Visible light spectrum
The segment of the electromagnetic spectrum that the human eye can view.
Visible light
The range of wavelengths
Who discovered the electromagnetic spectrum
Issac Newton
How was the electromagnetic spectrum discovered
Isaac Newton passed a narrow beam of light through a glass prism. As the light exited the prism, Newton could see the colours of the rainbow.
Colours of the electromagnetic spectrum
Red Orange Yellow Green Blue Indigo Violet
Dispersion
The spliting of white light into colours that make up white light
Dispersion
The splitting of white light into colours that make up white light
Each colour has…
It’s own wavelength
How are different wavelengths slowed
Each wavelength is slowed by glass
What happens when the amount of refraction increases
The wavelength decreases
Examples of short wavelengths of light
Blue and Violet
Examples of light with longer wavelengths
Red and orange
How are rainbows formed
Rainbows are formed because rain droplets act as prisms.
The primary colours of the light spectrum
Red
Green
Blue
Why are red green and blue called primary colours
The three colours can be mixed to produce white light