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What will be the brightness of lighted and unlighted buildings which are focused using a concave mirror?
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How can a concave lens be used?
In glasses to further the focal length so it is able to be focused at the retina.
What is the difference between convex and concave lenses?
The expressions relate to the shape of the surfaces of the lens. Concave means that the surface is like the inside of a sphere, convex means that it looks like the outside surface of a sphere. A lens has two surfaces. Most often the spectacle lens are bent away from the eye: the nearer surface is concave and the outside surface is convex.
Why does the focal length of a concave mirror not change when held in water?
The focal length of a concave mirror is a function of its radius only (a geometry function), not of its material nor the material surrounding it. To change the focal length you wound have to alter it physically. Keep in mind that the light or whatever is being focused does not make a media change. It never enters the mirror media. It is always in the surround media, whatever that is, so Snell's law does not apply here.
Should a short sighted person use a concave or convex lens?
This is a lens which is designed to help someone who has problems seeing at distance (myope), the light rays going into your eye are not hitting the fovea (the part of the eye located on the retina which allow you to see clearly) in the proper place, these rays are falling in front of the fovea, so by using a concave ( a minus lens) lens, this moves these light rays by diverging them and moving them back to the fovea which allows for clear vision at distance. At least this is how a concave lens is used optically speaking.this is from winter006: concave mirrors are used in stores and gas stations to see a wider area of the store.It's also called , a Diverging Lens .It is thinnest in the centre and spreads light out , so it gives a diminished image .
How a beam of laser light is different than the beam of light produced by a flashlight?
It does depend on the kind of laser, but the main difference is that a laser emits a focused beam of light of the same wavelength (i.e. color) while a flashlight emits light of many different wavelengths, and 'beams' this light by reflecting it using a concave mirror built into it behind/around the bulb.
How is a concave mirrior used in a flashlight?
it is used as the backing reflector for the bulb. because it is concave, the light that hits it is focused into a beam of light.
How can a concave lens be used?
In glasses to further the focal length so it is able to be focused at the retina.
When light strikes the large concave mirror of a reflecting telescope where is the light focused?
In front of the mirror
How is an electron beam focused?
concave & convex
Can Castleton continue to develop as a tourist attraction?
Yes as they continue to turn more retail buildings into retail shops just focused on tourists.
What is the difference between convex and concave lenses?
The expressions relate to the shape of the surfaces of the lens. Concave means that the surface is like the inside of a sphere, convex means that it looks like the outside surface of a sphere. A lens has two surfaces. Most often the spectacle lens are bent away from the eye: the nearer surface is concave and the outside surface is convex.
What is the difference between concave and convex lens'?
Answer #1convex lens is something they put in your eyes as contacts or in your glasses if you farsited but convex lens makes your image bigger and concave lens makes your image smaller.Answer #2For example, mirrors can be convex, concave and straight, just like glass. The normal mirrors that you use to look at yourself are straight mirrors, they show a normal picture.Do you ever walk into a shop and see a huge bulging mirror in the corner of the shop and you can see just about every corner of the shop in the mirror? well that is a convex mirror. The curved mirrors show a wider view of everything.The concave mirrors are opposite, they "magnify" the image, the concave mirrors make objects larger because the light is focused on a smaller reflection area.This is exactly what happens if you look through glass, that is either a convex or concave.People who are short sighted have glasses with a concavelens, (the lens that indents, you can also remember that it is concave that way because a cave goes in and a concave lens goes in.People who are long sighted wear glasses with convexlenses.
How can you focus white light?
You can use a concave or vice-versa round glass object AKA magnifiying glass. Then you have to focus the rays' vectors straight through the center of the magnifiying glass so that it focuses light into a single spot.
Why does the focal length of a concave mirror not change when held in water?
The focal length of a concave mirror is a function of its radius only (a geometry function), not of its material nor the material surrounding it. To change the focal length you wound have to alter it physically. Keep in mind that the light or whatever is being focused does not make a media change. It never enters the mirror media. It is always in the surround media, whatever that is, so Snell's law does not apply here.
What happens to most of the light rays that strike a convex lens?
If the lens is convex, they will be diffracted and focused to a point, after which they will spread out. If it's concave, they will be diffracted so that they spread out without first concentrating.
Why do doctors and dentists use concave mirrors?
The concave mirrors provide a magnified reflection of whatever is being reflected. Since the doctors - and especially dentists - are often looking for small details in the reflection, this can be quite useful. This is often carried to an even higher level by surgeons who wear magnifying binoculars while conducting delicate surgeries.
What emotion is between focused and confused?
Focused is the emotion when you are sure about something. The antonym of that is confused that is not focused.
