Flashcards in Electromagnetic Spectrum and light Deck (14):
What type of wave are Electromagnetic waves?
What happens when you increase the frequency of an electromagnetic wave?
You increase the energy transferred
List the electromagnetic waves
What does red and green light make?
What does red and blue light make?
What does blue and green light make?
What do filters do?
Let through some colours of light, and absorb the others
What is black?
The absence of colour
What is white light?
All of the colours of light combined
How do we see light?
By light reflecting off the object and into our eyes. The object absorbs all of the light that is not the same colour as it.
What is a converging lense?
A converging lense bulges in the middle. Causing parallel rays of light to converge on a principal focus
What is a diverging lens?
A diverging lens caves outwards. It causes parallel rays of light to converge outwards.
What is the focal length of a lens?
The distance between the centre of the lens and the principal focus