Colors
Color that reflects all wavelengths.
What appears to be white
This is how we see objects
When they emit or reflect light.
A light ray approaching a surface is called this.
What is a incident ray
This is what causes the speed of light to change
When it travels through different media.
What are cones
millions of light-sensitive cells in the eyes
These are the three colors of light the brain can see
Red, blue and green
These are the two types of reflection
2) specular
A ray that is leaving a reflected surface is called this
A reflected ray.
This is the definition of the index of refraction
How much bending occurs in the light
Where is a converging lens is thicker and thinner
Thicker in the center and thinner at the edges
DAILY DOUBLE
This is the definition of a secondary color
What are the secondary colors and how are they made
What is mixing of primary colors
Yellow (red + green)
Magenta (red + blue)
Cyan (blue + green)
plane or flat mirror
This is the formula for the index of refraction
n = c / v
where:
n= index of refraction
c = speed of light and
v = speed of light in a material
Where is a diverging lens is thicker and thinner
Thicker at the edges and thinner at the center
What absorbs some wavelengths and reflects others
pigments
This type of reflection occurs when a smooth surface reflects light mostly in one direction
specular (aka regular reflection)
Because it is seen in a position where no light rays originate.
This is the most common and useful refraction device.
lens
This is what nearsightedness is and how it is corrected
1) focal point is in front of the retina
2)using a diverging lens
Explain how a rainbow is formed
White light is refracted and reflected by water droplets in the atmosphere; the colors do not bend at the same rate (all different wavelengths), so they separate as they bend.
This is what happens to the rays of light in diffuse reflection
a rough or uneven surface reflects the light in all directions.
What is a real image.
It is formed when the rays of light are made to converge or come together by an optical device-- where rays of light intersect, they form an image.
DAILY DOUBLE
These are the two types of lenses and what they do to light and the type of lens they use
Converging Lens: convex lens; focus light at one point
Diverging Lens: concave lens; spreads light apart
This is what farsightness is and how it is corrected.
1) the focal point is behind the retina
2) corrected with a converging lens