The type of glass used in making lenses is

The type of glass used in making lenses is
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Answer :

lead glass.
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Related questions

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

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

Last Answer : answer:

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)

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

The type of glass used in making windshields of automobiles is

Description : The type of glass used in making windshields of automobiles is

Last Answer : safety glass.

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

Description : The type of glass used in making combustion tubes is

Last Answer : potash-lime / Bohemian glass.

The type of glass used in making chemical apparatus is

Description : The type of glass used in making chemical apparatus is

Last Answer : potash-lime/Bohemian glass.

The type of glass used in making bottles is

Description : The type of glass used in making bottles is

Last Answer : soda-lime glass.

The type of glass used in making electric bulbs is

Description : The type of glass used in making electric bulbs is

Last Answer : soda-lime 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

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

Last Answer : answer:

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 : answer:

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

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

Are Objective lenses standardized? [microscope]?

Description : Are Objective lenses standardized? [microscope]?

Last Answer : I have bought a number of used objectives on line, and have never had the problem of one not fitting, but that may have been luck.

Large astronomical telescopes always use as objective (a) Lens (b) Mirror (c) Combination of lenses (d) None of the above

Description : Large astronomical telescopes always use as objective (a) Lens (b) Mirror (c) Combination of lenses (d) None of the above

Last Answer : Ans:(a)

Which lenses are used by people having short-sightedness? A. Convex B. Concave (Answer) C. Concavo-convex D. Plain

Description : Which lenses are used by people having short-sightedness? A. Convex B. Concave (Answer) C. Concavo-convex D. Plain

Last Answer : B. Concave (Answer)

Based on the diagram shown, what kind of lens is used to make the overhead projector? (a) concave lenses (b) convex lenses (c) bifocal lenses (d) flat lenses

Description : Based on the diagram shown, what kind of lens is used to make the overhead projector? (a) concave lenses (b) convex lenses (c) bifocal lenses (d) flat lenses

Last Answer : (b) convex lenses

Sumati did some preliminary experiment with the lenses and found out that the magnification of the eyepiece (L 2 ) is 3. If in her experiment with L 2 she found an image at 24 cm from the lens, at what distance did she put the object? (a) 72 cm (b) 12 cm (c) 8 cm (d) 6 cm

Description : Sumati did some preliminary experiment with the lenses and found out that the magnification of the eyepiece (L 2 ) is 3. If in her experiment with L 2 she found an image at 24 cm from the lens, at what distance did she put the object? (a) 72 cm (b) 12 cm (c) 8 cm (d) 6 cm

Last Answer : (c) 8 cm

If the powers of the lenses L 1 and L 2 are in the ratio of 4:1, what would be the ratio of the focal length of L 1 and L 2 ? (a) 4:1 (b) 1:4 (c) 2:1 (d) 1:1

Description : If the powers of the lenses L 1 and L 2 are in the ratio of 4:1, what would be the ratio of the focal length of L 1 and L 2 ? (a) 4:1 (b) 1:4 (c) 2:1 (d) 1:1

Last Answer : (a) 4:1

Based on the diagram shown, what kind of lenses would Sumati need to make the telescope? (a) Concave lenses (b) Convex lenses (c) Bifocal lenses

Description : Based on the diagram shown, what kind of lenses would Sumati need to make the telescope? (a) Concave lenses (b) Convex lenses (c) Bifocal lenses

Last Answer : (b) Convex lenses

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.

Bi-focal Eyeglass wearers, do you use Progressive (No Line) or Line lenses?

Description : Bi-focal Eyeglass wearers, do you use Progressive (No Line) or Line lenses?

Last Answer : Can’t get use to em!! I went back to single vision, much safer too :-/

Is it possible to invent photo magnification without the use or manipulation of lenses?

Description : Is it possible to invent photo magnification without the use or manipulation of lenses?

Last Answer : answer:Scan it on a computer and zoom in? You can’t change how we see something without affecting the light spectrum, and in the case of magnifications it’s distorting it so it warps it. How can you distort light without something to distort it? exactly

What brands for film camera lenses can I use on my Vivitar 35mm?

Description : What brands for film camera lenses can I use on my Vivitar 35mm?

Last Answer : When all else fails “Read the….. MANUAL” The cameras sold by Vivitar use Pentax K and OTHER brands of lens mounts. So read the manual, it will tell you.

To Any nikon using photographers, what are your favorite lenses?

Description : To Any nikon using photographers, what are your favorite lenses?

Last Answer : I have a 55–200 that I bought when I got my new camera three years ago. It has been extra handy so that I don’t have to carry a bunch of lenses. My other lens is a 28–55. I’d get a 70 – 300 if I could afford it.

In desperate need of help for this decision about lenses?

Description : In desperate need of help for this decision about lenses?

Last Answer : I wouldn’t get an operation at 15; my son did at 24 and was very happy with it. (Think your eyes might change too much,) If you can afford them and hate wearing glasses, why not try contacts if they are appropriate for your vision needs?

Do you have a trick for putting in and taking out contact lenses?

Description : Do you have a trick for putting in and taking out contact lenses?

Last Answer : I recall seeing some tools for it, like small suction things? That might be a little less scary to use then seeing your fingers come closer and closer to your eyeballs would be for me anyway.

Where can I send my eye glasses frames, and have RX lenses made and installed?

Description : Where can I send my eye glasses frames, and have RX lenses made and installed?

Last Answer : I have had lenses replaced in glasses that I’ve had, and I have taken frames into an optical store that sold the same line and had them make the lenses. I would not want to risk buying lenses online because of the fitting. If eyeglasses are not correct, you can get horrible headaches.

What does the designation medium or high mean on contact lenses?

Description : What does the designation medium or high mean on contact lenses?

Last Answer : answer:Bifocal contact lenses generally contain one additional number which is the add power. A special field will be given for this number. Notes 1. A contact lens prescription is not the same as ... correct for it by changing the power of the lens. Still Have Questions? Email : [email protected]

Will my Nikon D70 lenses work with the D300?

Description : Will my Nikon D70 lenses work with the D300?

Last Answer : answer:Yes, any lens the worked with your D70 should work fine on your D300 since they’re both DX format cameras. The D300 is NOT a full frame camera. (The D700, D3, D3x, and D3s) are the only full frame Nikon DSLRs.

Where do you buy your contact lenses?

Description : Where do you buy your contact lenses?

Last Answer : Anywhere you go is going to require a prescription, and they recommend it be within two years. You may be able to fudge it if you buy online and happen to have all the information they want, but any storefront will want a valid, American prescription.

My mom has a pair of Diesel sunglasses with scratched lenses she wants replaced. How, who, where to get this done?

Description : My mom has a pair of Diesel sunglasses with scratched lenses she wants replaced. How, who, where to get this done?

Last Answer : Any Optical Sales place should be able to help you with either replacing the lenses or possibly buffing the scratches out.

Extension tubes, or macro lenses?

Description : Extension tubes, or macro lenses?

Last Answer : answer:Well, it all depends on how fast you want your lens and how much glass you want to buy, and whether or not you want vibration reduction. In a situation like this you get what you pay for ... no experience with extension tubes. But an extension tube won't make your lens any faster than it is.