NAO Book 2 – Accurate Answers To All Questions
Save Groups
Practice questions for this set
Learn 1 /7 Study using Learn
TRUE
Choose an answer
The 2 theories of light that we If the sagittal depth remains the same,
1 primarily discuss are the _________ & 2 and the diameter increases, the
_________. surface will become flatter.
Why should you have the lens
3 What does HEV stand for? 4 markings on a progressive lens at the
time of delivery adjustment?
Don't know?
Terms in this set (188)
The 2 theories of light that we Corpuscular & Electromagnetic Wave
primarily discuss are the _________ &
_________.
Which light theory explains shadows? Corpuscular Theory
,Which theory explains rainbows? Electromagnetic Wave Theory
What is the size of a nanometer? 1 billionth of a meter
What is the speed of light in air? 186,000 miles per second
A single band of light from a single Ray
point on light source is called a
__________.
The visible spectrum is only a small 380 nm to 750 nm
portion of the electromagnetic
spectrum and consists of wavelengths
from __________ to ___________.
Which category of invisible light is the UV-A
major cause of skin and ocular
damage?
Which color has the longest Red
wavelength?
How is the wavelength of light Crest to crest OR Trough to Trough
measured?
Who introduced the electro-magnetic Maxwell
wave theory?
Why do we see a banana as yellow? Because the CONES in our eyes receive the light
waves. The eyes see the REFLECTION of color.
What does HEV stand for? High Energy Visible
Why is the sky blue? Because the blue wavelength scatters the most
Absorption When a ray of light enters a lens, some of the light
will not completely travel through the lenses
, Deviation Angle a ray of light is changed from its original path.
Diffuse Reflection A reflection from a rough surface- the reflection
does not produce a clear image.
Incidence The angle which a ray of light makes with the surface
of a refracting medium.
Reflection The return of light when going from one medium into
another.
Refraction -The bending of light when going from one medium
into another.
-The angle created when a ray of light passes from
one medium into another.
Speculation Reflection The forming of a clear image when light strikes a
surface.
Why is the pencil red? It reflects red rays back toward the eye and absorbs
all other rays of visible light.
Why is the blacktop black? It does not reflect any rays back toward your eye;
rather it absorbs them all
If a light beam passes through a green The green rays are refracted through the lens and all
sunglass lens, why will exiting light be other color rays are absorbed by the pigments in the
green? lens material.
When a ray of light travels from air into -When it is perpendicular to the surface, it slows
water, what happens to the ray of down but does not change direction. It is not
light? deviated or displaced.
-When it is not perpendicular to the surface, it slows
down and changes direction toward the normal. It
deviates from its original path.
Save Groups
Practice questions for this set
Learn 1 /7 Study using Learn
TRUE
Choose an answer
The 2 theories of light that we If the sagittal depth remains the same,
1 primarily discuss are the _________ & 2 and the diameter increases, the
_________. surface will become flatter.
Why should you have the lens
3 What does HEV stand for? 4 markings on a progressive lens at the
time of delivery adjustment?
Don't know?
Terms in this set (188)
The 2 theories of light that we Corpuscular & Electromagnetic Wave
primarily discuss are the _________ &
_________.
Which light theory explains shadows? Corpuscular Theory
,Which theory explains rainbows? Electromagnetic Wave Theory
What is the size of a nanometer? 1 billionth of a meter
What is the speed of light in air? 186,000 miles per second
A single band of light from a single Ray
point on light source is called a
__________.
The visible spectrum is only a small 380 nm to 750 nm
portion of the electromagnetic
spectrum and consists of wavelengths
from __________ to ___________.
Which category of invisible light is the UV-A
major cause of skin and ocular
damage?
Which color has the longest Red
wavelength?
How is the wavelength of light Crest to crest OR Trough to Trough
measured?
Who introduced the electro-magnetic Maxwell
wave theory?
Why do we see a banana as yellow? Because the CONES in our eyes receive the light
waves. The eyes see the REFLECTION of color.
What does HEV stand for? High Energy Visible
Why is the sky blue? Because the blue wavelength scatters the most
Absorption When a ray of light enters a lens, some of the light
will not completely travel through the lenses
, Deviation Angle a ray of light is changed from its original path.
Diffuse Reflection A reflection from a rough surface- the reflection
does not produce a clear image.
Incidence The angle which a ray of light makes with the surface
of a refracting medium.
Reflection The return of light when going from one medium into
another.
Refraction -The bending of light when going from one medium
into another.
-The angle created when a ray of light passes from
one medium into another.
Speculation Reflection The forming of a clear image when light strikes a
surface.
Why is the pencil red? It reflects red rays back toward the eye and absorbs
all other rays of visible light.
Why is the blacktop black? It does not reflect any rays back toward your eye;
rather it absorbs them all
If a light beam passes through a green The green rays are refracted through the lens and all
sunglass lens, why will exiting light be other color rays are absorbed by the pigments in the
green? lens material.
When a ray of light travels from air into -When it is perpendicular to the surface, it slows
water, what happens to the ray of down but does not change direction. It is not
light? deviated or displaced.
-When it is not perpendicular to the surface, it slows
down and changes direction toward the normal. It
deviates from its original path.
