Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science-Eyes, Light, and Color > Science- Eyes, Light, and Color > Flashcards

Science- Eyes, Light, and Color Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Incandescent Light

A

-Worst in term of energy efficancy
-Softer light, not as bright
-Cost way more to run but really cheap to buy
-Life span is 750 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Fluorescent Light

A

-In the middle of efficancy
-Same level of brightness as LEDs
-Cost more money, but cheaper to buy. More expensive to run

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

LED Light

A

-Most energy efficant light bulb
-Stong brightness
-Are expensive to purchase, cheap to run

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Myopia

A

-Ner-sightedness
-Most common
-Corrected using a concave lens
-Divergs the ray so they meet on the retina
-Closer the easier to see
-Eye is to long, to strecthed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Hyperopia

A

-When the eyeball shrinks
-Image formed behind the retina.
-Uses convex lens
-Farther away, the easier to see

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Astigmatism

A

-If the cornea becomes distorted
-The light focuses at more then one point
-Causes to see scattertd light
-Could be behind or infront of the retina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Iris

A

Controls the light and the colored part of your eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Pupil

A

Allows the light in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Cornea

A

Protects the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Aqueous

A

Humor- water (liquid) part of your eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Retina

A

light sensitve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Optic Nerves

A

Tells the brain what the eye sees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Viteous Humour

A

Like jelly, filled with a gel like substance. Maintains the shape of the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cilliary Muscles

A

Comes in through the lens and the pupil bends it, this is a healthy human eye ball

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Subracting Color

A

If an object appears red, then its surface is reflecting red into your eye, and absorbing (subtracting) the other primary colors, blue and green. Black absorbs the light.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Radio

A

-A single radio wave has the length of a football field.
-Used in communications around the world like AM/FM radio, TV, cellular phones, radar.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Microwave

A

-Produce more energy due to shorter wave lengths and higher frequencies.
-They cause the particles inside the food to vibrate which produces heat.

18
Q

Infrared Light

A

-The sun, fire, living creatures, and other heat sources produce infared light.
-We cant see it but we can feel it as heat.
-Wave lengths longer than visible light and has less energy.

19
Q

Visible Light

A

-Dark red has less energy than the violet
(refer to imgae about visible light spectrum.)

20
Q

Ultraviolet Light

A

-Ultra violet light is only caused by the sun.
-Short wave lengths with more energy than visble light.
-Most is absorbed by the earth’s ozone layer.
-Sublock creams are opaque and block UV rays.

21
Q

X-Rays

A

-They pass through soft tissue, but not bone.
-Uses it to look at bones and they use it at airport for secruity.

22
Q

Gamma Rays

A

-Gamma rays wave lengths are as small as atom nuclei.
-Gamma rays are used to destroy cancer cell.

23
Q

Electromagnetic Spectrum: Frequency

A

The number of times a wave source vibrates in a given amount of time.

24
Q

Wavelength

A

The distance between the top of one wave and top of the next wave.

25
Q

Ampltiude

A

The height of the wave from its middle rest position to its highest point.

26
Q

How we see color

A

-Rememebr that the retina is the lining of the back of your eye that reacts to light. The retina itself is made up of specialized cells. Some of these cells are called cones. There are three types of ones, each sensitive to different ranges of color: red, green, and blue. When light hits the cones, the cones send messages to your brain. The color that you see depends on the type and number of cones responding to the light entering your eye.

-Reflection of all three primary colors.

-There are also rods on the retina which only see black and light (white.)

-They work when there isn’t enough light for the cones.

27
Q

Color blind

A

The cone cells within your eye may be defective. Causing a condition known as color blindness.

28
Q

Types of Lenses

A

Simple convex, double convex, simple concave, double concave

29
Q

Concave

A

-Curves inward
-1 metre away you turn around and look bigger.
-Disforms your facial porportions.
-Creates a flipped image at the focal point.
-Enlarges the image
-Not have a large viewing area.

30
Q

Convex

A

-Curves outward.
-Upright image
-Makes image smaller
-Large viewing area
-Example: side view and rear view mirror
-Diverging
-Curved outwards.

31
Q

Optics

A

Scientific study of the properties of light and the way technology uses these properties.

32
Q

How does light travel

A

Light travels in straight lines until it strikes an object, called rectilinear propagation. Opaque materials, such as bricks, books, and people, reflect (throw back.)

33
Q

Transparent

A

All light passes through

34
Q

Transluscent

A

Some light passes through EX: sunglasses.

35
Q

Opaque

A

No light passes through

36
Q

Shadows

A

Is created whenever light hits an opaque material.
A shadow is composed of two regions: a particully shaded region (the penubra.) and a fully shaded region (the ombra.)

37
Q

Visible Light spectrum

A

The colors of light together form the visable lights pedrum (red, orange, yellow, green, blue, indigo, violet.) Every color you see is a mixture of these colors.

38
Q

Law of reflection

A

-The angle of a reflected ray of light is equal to the angle of the incident ray of light.
-When light hits a bumpy surface, it scatters everywhere. A smooth surface shoots back light right where it came from.

39
Q

Luminescence

A

Luminescence is the emission of light prouduced by methods other than heat.

40
Q

Chemiluminescence

A

-Chemiluminescence is the emission of light caused by a chemical reaction.
-Example: glow sticks.
-To identify the prenscence of blood.

41
Q

Bioluminescence

A

-Organisms that emit light, known as bioluminescent organisms, also produce light through a chemical reaction.
-Example: fire flys, sea of stars (plankton.)

42
Q

Phosphorescence

A

-Phosphorescence is the ability of a material to abosorb energy from an electro-magnetic radition source, such as a flashlight and then countine to emit light after the source has been removed.
-Example: glow in the dark stars.

Science-Eyes, Light, and Color (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions