Define Terms
A ______ is thin in the middle and thick at the edges
Diverging lens
Thin lens equation: 1 + 1 = 1 -- -- -- do di F
What is the thin lens or mirror equation
bends towards the normal
What happens when light is travelling from a medium, with a low refractive index, into a medium, with a higher refractive index?
When white light enters a prism and the different frequencies separate even more
dispersion
List the five parts of a refraction ray diagram
1. Incident Ray
2. Refracted Ray
3. Normal
4. Angle of Incidence
5. Angle of Refraction
the bending or change in direction of light when it travels from one medium to another
Refraction
Name one application to converging lens
Glasses and magneyfiying glass
when you compare the size of the image with the size of the object
the magnification equation
The unwanted dispersion of colors. when each color is refracted by different amount
chromatic aberration?
This is the definition of refraction:
Bending of light when it travels from one medium to another.
an image form by light coming from an apparent light source , light is not arriving at or coming from the actual image location Real image
What is Vitrual image
the focal length (f) is ________ for converging lenses and _________ for the other (diverging)
positive , negative
what are converging lenses also called?
positive lenses
The mathematical relationship between the angle of refraction and the angle of incidence.
What is Snell's law?
This lens is used in glasses to fix Hyperopia
converging
the ratio of the speed of light in a vacuum to the speed of light in a medium , n= C/V ;
What is index of refraction
complete the following word problem : a converging lens has a focal length of 17 cm. a candle is located 48cm from the lens. what type of image will be formed and where will it be located?
the image of the candle is real and will be about 26 cm from the lens
complete the following word equation a toy of height 8.4 cm is balanced in front of a converging lens an inverted real image of height 23cm is noticed on the other side of the length what is the magnification of the lens.
m= -23cm ------- 8.4cm m=-2.7
The angle between the normal and the incident ray in the first medium.
What is the angle of incidence?
This is the difference between a real and virtual reflected image:
A Real Image is an image that is always inverted, meaning the light meets at a single point.
A Virtual Image is an image that is upright, which means that the light never met at a single point.
Lenses that bend light waves inward
converging
a diverging lens has a focal length of 29 cm . A a marble is located 23 cm in front of the lens where is the marble image located?
the marble image is located12.8cm from the lens.
the angle at which the light is refracted parallel to the surface
critical angle
When a ray is not refracted, but reflected after critical angle
When a ray is not refracted, but reflected.
The transparent curved structure in front of the eye.
What is the cornea?