Which type of glass is used in making lenses and prisms? -Do You Know?

Which type of glass is used in making lenses and prisms? -Do You Know?
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Rainbow is seen after rain because of hanging molecules of water which act as – (1) lenses (2) mirrors (2) prisms (4) slabs

Description : Rainbow is seen after rain because of hanging molecules of water which act as – (1) lenses (2) mirrors (2) prisms (4) slabs

Last Answer : (2) mirrors Explanation: In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. In a rainbow, raindrops in the air act as tiny prisms. Light enters the raindrop ... In the process, it is broken into a spectrum just like it is in a triangular glass prism.

Rainbow is seen after rain because of hanging molecules of water which act as (1) lenses (2) mirrors (2) prisms (4) slabs

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Last Answer : mirrors

What is used for making prisms?

Description : What is used for making prisms?

Last Answer : Flint glass

The type of glass used in making lenses is

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Last Answer : lead glass.

I was prescribed eyeglasses with prisms. What do you know about them?

Description : I was prescribed eyeglasses with prisms. What do you know about them?

Last Answer : I have a prism for a weakness in one of my eyes. It helps. I don’t recall how much extra it cost but I don’t think any more than, say, tinting. Any optician can provide them.

There are two prisms, one has equilateral triangle as a base and the other has a regular hexagon as a base. If both the prisms have equal height -Maths 9th

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How are the rectangular prisms in exercises 2-3 related?

Description : How are the rectangular prisms in exercises 2-3 related?

Last Answer : 5

What are triangular prisms?

Description : What are triangular prisms?

Last Answer : They are 3-dimensional objects comprising two congruent and parallel triangular faces and three rectangular faces joining the sides of the triangles.

The surface of enamel rod prisms in permanent teeth is: A. Perpendicular to the outer surface of the tooth B. Parallel to the outer surface of the tooth C. Parallel to enamel contour D. Parallel to enamel-dentine contour

Description : The surface of enamel rod prisms in permanent teeth is: A. Perpendicular to the outer surface of the tooth B. Parallel to the outer surface of the tooth C. Parallel to enamel contour D. Parallel to enamel-dentine contour

Last Answer : A. Perpendicular to the outer surface of the tooth

Electron microscope has a high resolution power. This is due to (a) electromagnetic lenses (b) very low wavelength of electron beam (c) low wavelength of light source used (d) high numerical aperture of glass lenses used.

Description : Electron microscope has a high resolution power. This is due to (a) electromagnetic lenses (b) very low wavelength of electron beam (c) low wavelength of light source used (d) high numerical aperture of glass lenses used.

Last Answer : (b) very low wavelength of electron beam

Making clear eyeglass lenses into sunglasses - who? where?

Description : Making clear eyeglass lenses into sunglasses - who? where?

Last Answer : Most opticians do this. I would check at a warehouse club – if you belong to one – or a local optometrist should be able to hook you up with an optician.

Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically (A) Polymethyl methacrylate (PMMA) (B) Polytetrafluroethylene (PTFE) (C) Polycarbonates (D) Phenolic resins

Description : Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically (A) Polymethyl methacrylate (PMMA) (B) Polytetrafluroethylene (PTFE) (C) Polycarbonates (D) Phenolic resins

Last Answer : (A) Polymethyl methacrylate (PMMA)

Which type of glass can cut off ultraviolet rays? -Do You Know?

Description : Which type of glass can cut off ultraviolet rays? -Do You Know?

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Which type of glass can cut off ultraviolet rays? -Do You Know?

Description : Which type of glass can cut off ultraviolet rays? -Do You Know?

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Which type of glass can cut off ultraviolet rays? -Do You Know?

Description : Which type of glass can cut off ultraviolet rays? -Do You Know?

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Which type of glass can cut off ultraviolet rays? -Do You Know?

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Which type of glass can cut off ultraviolet rays? -Do You Know?

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Which type of glass can cut off ultraviolet rays? -Do You Know?

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A person who is nearsighted will need what type of lenses in his glasses in order to see correctly?

Description : A person who is nearsighted will need what type of lenses in his glasses in order to see correctly?

Last Answer : ANSWER: DIVERGING or CONCAVE LENSES

When light passes from air into glass it experiences change in which things? -Do You Know?

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Glass is made of the mixture of which things? -Do You Know?

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Which does not wet the walls of the glass vessel in which it is kept? -Do You Know?

Description : Which does not wet the walls of the glass vessel in which it is kept? -Do You Know?

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Which variety of glass is heat resistant? -Do You Know?

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Which type of glass is used for making glass reinforced plastic? -General Knowledge

Description : Which type of glass is used for making glass reinforced plastic? -General Knowledge

Last Answer : The answer is 'Quartz glass'

Which type of glass is used for making glass reinforced plastic? -General Knowledge

Description : Which type of glass is used for making glass reinforced plastic? -General Knowledge

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Which type of glass is used for making glass reinforced plastic? -General Knowledge

Description : Which type of glass is used for making glass reinforced plastic? -General Knowledge

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Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Description : Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Last Answer : (4) Fibre glass Explanation: Fiberglass is a lightweight, extremely strong, and robust material. Although strength properties are somewhat lower than carbon fiber and it is less stiff, the material ... also very favorable when compared to metals, and it can be easily formed using molding processes.

Which type of Glass is used for making glass reinforced plastic?

Description : Which type of Glass is used for making glass reinforced plastic?

Last Answer : Fiber glass

The type of glass used in making windshields of automobiles is

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The type of glass used in making neon sign tubings is

Description : The type of glass used in making neon sign tubings is

Last Answer : lead glass.

The type of glass used in making combustion tubes is

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Last Answer : potash-lime / Bohemian glass.

The type of glass used in making chemical apparatus is

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Last Answer : potash-lime/Bohemian glass.

The type of glass used in making bottles is

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Last Answer : soda-lime glass.

The type of glass used in making electric bulbs is

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Last Answer : soda-lime glass.

Suggest the type of glass used for the following work: i) Making panel of partition wall ii) Cashier Cabin iii) Skylight iv) Door Shutter

Description : Suggest the type of glass used for the following work: i) Making panel of partition wall ii) Cashier Cabin iii) Skylight iv) Door Shutter

Last Answer : i) Making panel of partition wall: Block glass OR Sheet Glass OR chipped and ground glass OR soda lime glass ii) Cashier Cabin-Polished plate glass OR bullet proof glass OR soda lime glass OR laminated ... clear window glass or lead glass iv) Door Shutter: Soda lime glass OR tempered glass

Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Description : Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Last Answer : Fibre glass

Why don't they construct giant magnifying lenses to create heat and power?

Description : Why don't they construct giant magnifying lenses to create heat and power?

Last Answer : We already do This is probably what you pictured in your head, but it is exactly the same thing on a very large scale. excerpt Creating and storing power was the easy part. Far trickier was finding a way to deal with the stresses created by “radiation fluxes”

If I wanted to try contact lenses, could I just order some on Amazon, using the dioptric values of my current glasses?

Description : If I wanted to try contact lenses, could I just order some on Amazon, using the dioptric values of my current glasses?

Last Answer : None of the ones on Amazon are prescription that I’m aware of. Did you find some that asked for your vision prescription?

How in the hell could someone end up with 27 contact lenses in their eye?

Description : How in the hell could someone end up with 27 contact lenses in their eye?

Last Answer : Those things are very thin. Probably thought that they would dissolve after a while.

How do I remove the big lenses on the bottom of a pair of binoculars?

Description : How do I remove the big lenses on the bottom of a pair of binoculars?

Last Answer : answer:They are glued in with epoxy, to keep dirt, dust and moisture out of the binoculars. You’ll probably break the lenses before getting them out of the binoculars. Go to Fisher Scientific for science project lenses.

What are the lenses made out of on touch screen phones?

Description : What are the lenses made out of on touch screen phones?

Last Answer : answer:Yes, but it isn’t just regular glass. Most phones use Gorilla Glass (made by Corning) or something similar. link These are specially formulated and baked to be particularly hard. But glass still breaks.

How to know if contact lenses are expired?

Description : How to know if contact lenses are expired?

Last Answer : answer:I'm tempted to say when you can't read the old prescription, but in all seriousness I think that's a question for your doctor. Different brands and types of lens, not to mention the ... of your eyesight as opposed to the last time you had it examined, would be the determining factors.

Do any of you wear glasses with progressive lenses? How long did it take you to get used to them?

Description : Do any of you wear glasses with progressive lenses? How long did it take you to get used to them?

Last Answer : answer:I adjusted to mine within a day. I’d not had the ability to look at close object without taking my lenses for near sightedness off, so once I had the progressives I felt right at home. I hope the adjustment works for you.

What does "mm" mean in camera lenses?

Description : What does "mm" mean in camera lenses?

Last Answer : millimeter

My friend wore contact lenses for 8 months. Is this safe?

Description : My friend wore contact lenses for 8 months. Is this safe?

Last Answer : I am no expert. However I do believe there are factors like protein build up and lack of oxygen transmission through membranes when wear lenses for extended periods. He may have gotten away with it. But personally I wouldn’t try it. You get one set of eyes. No second chances.

What is the best way to buy a pair of glasses and lenses?

Description : What is the best way to buy a pair of glasses and lenses?

Last Answer : If you have a script in hand, check out any local Lens Crafters

What is the process of getting prescription lenses?

Description : What is the process of getting prescription lenses?

Last Answer : You need to get an appointment with an eye doctor and he or she will examine your eyes and write out a prescription for you. You can then take that prescription to a place that makes lenses and ask ... the lenses made at the doctor's office, but it seems to me that lenses are more expensive there.

Photographers - What key lenses/equipment should a novice photographer have?

Description : Photographers - What key lenses/equipment should a novice photographer have?

Last Answer : Go to Costco and get a camera lens kit by canon. Cheap option.

When optical technicians fit eyeglass lenses into plastic eyeglass frames, do they purposely adjust the frame shape in order to fit the lenses in?

Description : When optical technicians fit eyeglass lenses into plastic eyeglass frames, do they purposely adjust the frame shape in order to fit the lenses in?

Last Answer : No. They do not. My guess is that you’re remembering the frames incorrectly.