Light Flashcards
helps us to see objects.
Light
It’s actually electromagnetic radiation:
Partly electric, partly magnetic Flows in straight line (radiates)
Light
What we know as light or VISIBLE LIGHT is a type of something called
Electromagnetic radiation
What we know as ———— is a type of something called ELECTROMAGNETIC RADIATION
light or VISIBLE LIGHT
The ———— is the entire range of electromagnetic waves arranged according to their wavelengths.
electromagnetic spectrum
What medium is light transferred through?
LIGHT DOES NOT NEED ONE!
WHERE DOES LIGHT COME FROM?
• But how do they make light?
• The Sun and stars.
• It all starts with ATOMS
A nucleus surrounded by electrons that orbit.
Atoms
Electrons in materials are vibrated and emit energy in the form of ———, which propagate across the universe.
photons
——— have no mass but are pure energy.
Photons
Electromagnetic Waves are waves that are made up of these “———”.
Photons
are special in the fact that they do not need a medium to propagate through.
Electromagnetic waves
WHAT IS EMITTING THIS ENERGY?
ELECTRONS
Light sometimes acts as a particle where it reflects or even moves substances…acts like a particle. Light particle is a
PHOTON
carries the energy
Photon
