PHYSICS chapter 13.3, 13.4

Pigments ________________, or subtract, colors from incoming light

absorb

The color of an object is determined by which wavelengths are _________ and which are reflected

absorbed

We can also create white light by combining the three _____________ : red, green, and blue

additive primary colors

Objects ______ certain wavelengths of the incoming light and ______ the rest

adsorb ; reflect

If the leaf was illuminated by a red light, the leaf would appear ___________ because there would not be any green light for the leaf to reflect

black

equal mixing of the three pigments produces ______

black (sort of)

Light rays from an object that are ________ the principle axis pass through the image point

close (near)

Two additive primary colors combine to produce the _________________ color of the third primary color

complementary

_______________- an inwardly curved, mirrored surface that is a portion of a sphere and that converges incoming light (inner surface of the sphere)

concave spherical mirror

Light rays from the bulb reflect from the mirror and ____________ (reflect towards one another)

converse

_______________________ - an outwardly curved, mirrored surface that is portion of a sphere and that diverges incoming rays (outer surface of the sphere)

convex mirror

The primary pigments, or primary subtractive colors, are ____ , _____ , ______

cyan ; magenta ; yellow

a convex mirror is also called a ______ mirror because the reflected rays diverge from one another

diverging

Refracting telescopes are another type of telescope that use a combination of lenses to focus incoming ______waves

electromagnetic

Spherical aberration can be ______ by using a parabolic mirror

eliminated

Light rays from an object that are _____ from the principle axis do not pass through the image point, producing a blurred image

far

When light rays parallel to the principal axis converge at a single point called the ______ point, F

focal

The distance between F and the mirror is called the _________, ƒ

focal length

When the object is at the______, the image is infinitely far to the left and is not seen

focal length

parabolic mirrors: No matter the distance from the principle axis incoming parallel rays are reflected through the ______

focal point

in a convex mirror the ______ and the ______ of the curvature are situated behind the mirrors surface

focal point and center

Because the reflected rays actually pass through the image point, the image is in _____ of the mirror and can be captured on a physical object such as a screen

front

If an image is larger than an object, the magnitude of its magnification is ____________ than one

greater

The leaf appears ______ because ONLY the wavelengths that produce green light are reflected

green

F is located ______ between the C (center) and the mirror

halfway

The image is __________ and below the principal axis

inverted

where are parabolic mirrors used in?

large telescopes and flashlights

Images for objects close to the mirror are ____________ than the object

larger

If an image is smaller than an object, the magnitude of its magnification is ________ than one

less

A _____ is placed upright at a distance p from a concave spherical mirror

light bulb

_______ is always less than one (image is smaller than the object)

magnification

__________________, - the ratio of the height of the image to the object height

magnification

the image location can be determined with the ______ equation

mirror

A _____________ Magification indicates that the image is upside down with respect to the object, or inverted

negative

The back side of the mirror, which is usually the right side in ray diagrams, is the ______ side

negative

in a convex spherical mirror the focal length is always ______

negative

Reflecting telescopes use _______ mirrors to focus incoming electromagnetic waves at a single point

parabolic

_______________ - the alignment of electromagnetic waves in such a way that the vibrations of the electric fields in each of the waves are parallel to one another

polarization

A _____________ Magnification indicates that the image is upright with respect to the object

positive

In a concave spherical mirror the focal length is always ____________

positive

The front side of the mirror, which is usually the left side in ray diagrams, is the _____ side

positive

in a concave spherical mirror the object is always located on the front side of the mirror, thus p is always ____________

positive

image is ______ when in front of the mirror and POSITIVE

real

in a concave spherical mirror the image may either be ______ or ______

real ; virtual

When the object is at a distance greater than the focal length, the image is _____ and _____

real and inverted

________________ - an image formed when rays of light actually intersect at a single point

real image

The cone cells in our eyes detect either _____, _____, _____, and through the combination of these three colors we are able to see a wide range of colors

red, green, or blue

Spherical aberration can be __________ by using a small spherical mirror because the incoming rays can never be far from the principle axis

reduced

The _______ rays meet at some distance q in front of the mirror to form the image point

reflected

All forms of electromagnetic waves obey the laws of ____

reflection

We are able to see objects because light ______ off of those objects, but objects are not like mirrors

reflects

Remember that for an electromagnetic wave, the electric field and the magnetic field are at _________ angles with respect to one another

right

It is possible to orient light waves so that all of the electric fields oscillate in the ______ direction

same

The wavelengths of the light ______________ the object also affect the color of the object

shinning on

____ Indicates the type of image that is formed

sign of magnification

The radius of curvature, R, of the mirror determines image _______ and ____________

size and orientation

Images for objects far from the mirror are ________ and _______________________

smaller ; upside down

The additive primary colors can be combined in various ways to produce all of the colors of the _____

spectrum

This effect is called __________ and is present in any spherical mirror

spherical aberration

Remember that the mirror is a small part of a _______, which has a center of curvature, C. The _______ of curvature is the distance between the center of curvature, C, and the mirror

spherical shell ; radius

Two additive primary colors combine to produce a ______________ primary color

subtractive

______ produce a color image by combining pixels of the additive primary colors

television sets

Objects do not ___________ reflect ____ wavelengths of incoming light

uniformally ; all

magnification is a ______ quantity

unitless

Light from a typical source consists of waves that have electric fields oscillating in different directions. This light is said to be _______________

unpolarized

In a convex mirror the image is always _______________ (q is negative)

virtual

image is ______ when behind the mirror and NEGATIVE

virtual

When the object is between the focal point and the mirror, the image is _____ and ______

virtual and upright

in a convex mirror a ____, _____ image forms where the three rays appear to intersect

virtual upright

white light is composed of the colors of the ____________. we know this because we can ______ light into the elementary colors with a prism

visible spectrum ; separate

once separated by a prism we can create ______ light by passing the separated colors through another prism

white

Combining pigments is not like combining lights. Blue light and yellow light combine to produce ____________ light. Blue pigment and yellow pigment combine to produce ______ pigment

white ; black