1. Mr.Ilko

2.  Concave lens – a sunken in piece of glass that causes
light to spread out when light passes through it
 Convex Lens – a bulged piece of glass that causes light
to bend to a focal point when passed through it
 Concave mirror – a sunken in piece of glass that
bounces light into a focal point
 Convex mirror – a bulged out piece of glass that
bounces light away from its original path
 Focal point only happen on concave mirrors and convex
lenses in reality, the other two have imaginary focal
points

3.  ACRONYMN --- SERB
S – Straight – light travels in straight lines
 E – Energy – Light is a form of energy
 R – Reflected – light can be reflected
 B – Bent – Light can be bent

4.  Luminous – light (how bright it is)
 Transparent – Almost all of the light is able to
get through
 Translucent
– Some light is able to get
through and a small shadow is created
 Opaque– no light is able to get through, and
a shadow is cast

5.  RegularReflection – when the ray of light hits
off a smooth surface and bounces off at the
same angle it came in at
 Ex. Jacket reflectors
 DiffuseReflection – When light hits off a
rough surface and is scattered on random
directions and different angles
 Clothing around reflector tape

6.  LaserEyes surgery – reshapes the cornea of
the eye
 Compound eye – Usually on insects…eye is
broken up into individual parts called
ommatidium
 Camera eye – Human eye that is round, has a
cornea, retina and pupil

7.  Rods – High sensitivity to light
 Cones – Colour detectors
 Humans see in RED, GREEN, BLUE --- NOTHING
ELSE!!!!!
 In TV’s we see a colour like yellow by red and
green rods being close together

8.  Amplitude – The height of the Crest from the
resting point
 Wavelength – distance from the beginning of
a wave to the end
 Frequency – How often a wave length occurs
in a given time frame

9.  The ability for animals to produce their own
light
 Usually happens due to a chemical reaction or
bacteria

10.  Fluorescent – Uses electricity passing through
a gas in order to spark and create light
 Incandescent– Uses a heated up metal coil in
order to produce light
 Phosphorescent – Uses UV light on a phosphor
coating to produce light

11. 7 Ranges
 Radio Waves
 Microwaves
 Infrared waves
 Visible Spectrum -- ROYGBIV
 Ultra-violet waves
 X-Rays
 Gamma Rays

12.  Iris
 Pupil
 Retina
 Lens
 Cornea