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ENV CONTROL > Exam 1 > Flashcards

Exam 1 Flashcards

1
Q

Comfort

A

Comfort is defined as the absence of discomfort.

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2
Q

The somatic and special Senses

A

Includes the senses of vision, hearing, touch , taste, and smell.

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3
Q

Another word for touch is?

A

Tactile

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4
Q

Another word for taste is ?

A

gustatory

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5
Q

The eyes is composed of how many layers?

A

3

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6
Q

What are the 3 layers of the eye with their functions?

A
  1. outermost -> sclera: protection
  2. anterior surface -> cornea: transmits vision and light impulses to the brain.
  3. posterior surface:
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7
Q
  • Lens?
A

An oval transparent structure that is very elastic in nature and allows for focus of the eyes.

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8
Q

Vision

A

The ability to receive portion of light.

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9
Q

Retina

A

The light-sensitive inner surface of the eye. Containing the the receptor rods and cones.

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10
Q

Rods

A

It is part of the retina used for:
- Night vision (black and white)
-The ability to see general outlines

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11
Q

Cones

A

It is part of the retina used for:
- Color vision or harp vision.
- How we perceive color and details.

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12
Q

Primary color

A

Light: Red, green, blue
Paint: red, yellow, blue

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13
Q

Reception

A
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14
Q

Different vision:

A

Foveal vision: 10 degree
Central Vision: 20 degree
Near surround: 30 degree
Far surround: 60 degree
Peripheral vision: 85-90 degree

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15
Q

After Image

A

An image that remains after a stimulus is removed.
EX: After looking at something bright, such as a lamp or a camera flash, you may continue to see an image of that object when you look away.

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16
Q

Physiology

A

Light entering the eye stimulates retinal photoreceptors that convert photo information into neuronal signals, which get transmitted to the brain.

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17
Q

*Optical Mixing

A
  • The visual mixing of colors performed by the eye at a distance.
  • Cannot distinguish Details
  • How TV and comic book images are made up of tiny colored dots. In art history, Pointillists and Impressionists are known for their use of optical mixing.
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18
Q

*Adaptation

A

The eye’s ability to function in different/changing Light Levels

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19
Q

*Accommodation

A

The eye’s ability to focus on object at different distances.

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20
Q

Refraction Errors:

A

The shape of your eye does not bend light correctly, resulting in a blurred image.
EX: Nearsightedness (myopia) makes far-away objects look blurry.

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21
Q

Range of vision

A

1/100 footcandles - 100 footcandles

22
Q
  • Noticeable factors
A

Just noticeable: 1.5x
very noticeable: 5
extreme: 10x

23
Q
  • Visual Acuity factors
A

Size: small/big
Contrast: Light intensity for visual task vs. background
Luminance: amount of light emitted from an object
Exposure time/level of interest: how much time examined, how visually stimulating

24
Q

Glare

A

The effect of excessive brightness in the field of view causes annoyance or discomfort and interferes with vision.

  • It can be direct from a light source or reflected from a shiny surface.
25
Q

Types of glares

A

Direct: when offending brightness is in FOV

Reflected/veiling - when brightness is reflected in such a manner to reduce contrast or produce discomfort.

26
Q

Hue

A
  • General classification of color

Hue is described with the words we normally think of as describing color: red, purple, blue, e

27
Q

Direct Glare

A

Direct glare is the result of high brightness from a light source in the field of vision.
EX: the sun in front of a person’s eye is a direct glare. Whereas indirect glare is the result of light that is reflected in the eye. For example, light from the sun being reflected from a surface to a person’s field of view is known as indirect glare.

28
Q

Value

A
  • Lightness or darkness of a color

Value (lightness) describes the overall intensity of how light or dark a color is. It is the only dimension of color that may exist by itself.

29
Q

Chroma

A

-Intensity of color
- saturated or unsaturated

Chroma (saturation) may be defined as the strength or dominance of the hue.

30
Q

*Color temperature

A

Wavelength emitted by a heated black body

  • expressed in Kelvin
31
Q

Candle Power

A
  • luminous intensity of a light source
  • pushing power of a light source
32
Q

Candela

A

-The standard unit of luminous intensity.
- potential/pressure of a light source to produce illumination

33
Q

Lumen/Luminous Flux

A
  • Quantitative unit for measuring flow of light energy
34
Q

foot- candle

A

the amount of illumination produced by a source of one candle at a distance of one foot.

35
Q

Foot Lambert

A

How much light is being bounced off a surface

36
Q

Inverse square Law

A

FC= CP/D^2

37
Q
  • Absorptance
A

Ratio of light reflected from a surface to the light falling upon it.

38
Q

Reflectance

A

The ratio of light reflected from a surface to the light falling upon it.

39
Q

Specular reflection

A

The angle of reflection is equal to the angle of incident light. It is also called as *regular reflection

Ex: Mirror

40
Q

Diffuse reflection

A

The reflected light is scattered in all directions so that the reflecting surface appears equally bright from any angle of view.

41
Q

Transmittance

A

The ratio of light passing through a material to the light falling on it.

42
Q

Direct Transmission

A

The angle at which the light enters is the same after passes through materials.
- Occurs with transparent materials

43
Q

Diffuse Transmission

A

Transmitted light is scattered evenly in all directions after passing through a material

-Appears equally bright from any angle of view.
-occurs with translucent materials

44
Q

Daylight advantage and Disadvantage

A

Reduces electricity costs. Cons: – Glare; direct sunlight on shiny surfaces reflects bright light, making it difficult to see or work. – Though it brings life to homes and offices, sunlight will fade colors of furniture, artwork, rugs—anything it touches—over time

45
Q

Skylight

A

The diffused and reflected light of the sky.

46
Q

Sunlight

A

A portion of the electromagnetic radiation is given off by the sun.

47
Q

Ground light

A

Sunlight or skylight reflected by surfaces below the plane of the horizons

48
Q

Fenestration

A
  • Arrangement of the window of a building
  • Opening through roof- top lightning
  • Vertical windows - side lighting
49
Q

Word-Color

A

Fire : Red
Richness: Gold
Season Fall: Brown
Cool: Blue
Cheerful: Yellow
Anger: Red
etc…

50
Q

What color would you paint a room to make it seem big?

A

White

51
Q

Paint Color for room

A

When you look at how to make a small room look bigger with paint, keep in mind that medium shades will make your space appear smaller than it is. Using dark and bright white colors that open up a room, in contrast, creates the illusion of a much larger area.

52
Q
  • Emissivity
A

ability of a surface to give off radiation

ENV CONTROL (1 decks)

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