Types of light
Define Fluorescence
When
When light is emitted by an
object and atoms absorb
radiation and are in an
excited state, producing a
longer wavelength.
Define light
Electromagnetic energy made of different
wavelengths.
When light hits a smooth, --like surface and has a PREDICTABLE angle of reflection, it is known as
Specular reflection
What is the term for being able to view objects up close clearly, BUT having difficulty viewing objects far away?
Near sighted
The number of waves that pass a static place in a set amount of time is called
Frequency
Define Bioluminescence
Light that occurs in nature
The two categories of light are
incandescence
luminescence
A shape that forms an inward curve or a lens that is thick at THE edges and thin in the middle is:
Concave
Define far sighted
Being able to view objects far away, BUT having difficulty viewing objects up.
The visible light colour with the lowest frequency is
Red
Define Phosphorescence
When radiation is absorbed
by a substance.
Define Translucent
A medium where some light
can pass through.
Define convex
A shape that bulges; a lens that is thin on the edges and thick in the middle.
Define refraction
The bending of light when it passes through a different
Define Chemiluminescence
Light produced from a
chemical reaction.
Define Transparent
Medium light can easily
pass through.
How do you correct near sightedness?
Corrected with a concave lens
What are two natural sources of light and two artificial sources of light?
Natural: Sun, stars, moon, fires etc..
Artificial: Light bulbs, matches, glow sticks, candles etc..
6. List the seven categories of the electromagnetic spectrum from the lowest frequency to the highest frequency.
Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays.