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What is the answer to this question is called a material that can be blown into shape-used to make lenses?
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Do thick convex lenses have longer or shorter focal lengths than thin convex lenses?
As a thicker lens has more material to do bend the light further it it would have a shorter focal length
What is eyeglass lens made of?
Eyeglass lenses could be made of nearly any plastic or glass. For example, some glasses lens, such as my own, are made of a plastic called polycarbonate which is the material used to make bulletproof glass so my glasses are impact resistant. Other eyeglass lenses can be made from other plastics and glasses such as CR-39, Homopolyer and crown glass.
What is the one advantage of combination of lenses?
Every lens causes color aberration. (called dispersion). By using a combination of lenses it can be reduced.
Lenses are engineered to have specific focal lengths Besides the curvature of the two sides of a lens what determines the focal length?
The material that the lens is made from.
Why are convex lenses sometimes called converging lenses?
when the rays pass through the convex lens they tend to converge to the central horizontal axis as a result of which they seem to be meeting at common point so these are also called as converging lens.
What is the raw material of lenses?
The raw material of lenses is plastic polymer in most cases. There are some lenses which are made from glass materials as well.
What are contacts made out of?
These are the types of contact lenses and the material(s) they're made out of: 1. rigid lenses - polymethyl methacrylate (now improved) 2. soft lenses - silicon hydrogel (which is the material that is being used in manufacture of contact lenses today) 3. hybrid - mixture of materials of both rigid and soft lenses
What were early lenses called besides magnifiers and why?
Early lenses were called eyepieces.
What are aurolab lenses made of?
Aurolab lenses are made of high-quality acrylic material. These IOLs are used in cataract surgeries.
What is the color distortion caused by lenses called?
color disortion from lenses is called chromatic aberration
What are lenses with thick centers and thin edges called?
Convex lenses
Attached to the revolving nosepiece of a microscope are three or four small lenses called?
They are called objective lenses.
Why were early lenses called eyepiece?
I wanted to ask this question not answer it maybe it is called an eyepiece because you looked though it with your eye
What are the lenses called in a reflector telescope?
The lenses used in reflector telescope is the concave lens.
What are the lenses on a microscopic called?
Speakers
How did the invention of soft plastic material change contact lenses?
the pliable, hydrophilic material absorbed tears rather than shedding them, as did hard contact lenses, and virtually eliminated any sensation of the eyelid passing over the lens.
What are 'water marbles' made from?
water marbles are made from the same material as contact lenses
