condensation
Both concave and convex lenses are used in glasses; A microscope, like a reflecting telescope, uses a concave mirror, a plane mirror, and a convex lens; A refracting telescope uses two convex lenses to magnify images in the sky; binoculars use concave lenses to improve detail.
Convex lenses are used for glasses since it can bend light to provide better eyesight. Their also used for cameras, telescopes or science purposes. Also you have double convex lens in your eye.
Concave lenses are used in glasses for people who are near-sighted. Convex lenses are used in glasses for people who are far-sighted.
The definition of the word 'optometry' is The professional practice of primary eye and vision care that includes the measurement of visual refractive power and the correction of visual defects with lenses or glasses.
the lenses make objects look smaller than what they are so that people know what they look like.
the glasses that you wear have lenses
When the temperature changes, the air inside and outside the glasses have different levels of moisture. This causes condensation to form on the lenses, creating fog.
no
Yes, acetone can damage glasses lenses as it is a strong solvent that can dissolve certain types of lens coatings and materials. It is best to avoid using acetone on glasses lenses to prevent damage.
get glasses
GLASSES
Glasses without lenses? as in fake ones? why would you want them? U can just go to a 3d movie, get a pair of those and pop the lenses out.
Because you have two eyes, if you are talking about bi focal lenses then it is so that you can use a single glass both for reading and for outdoor use (looking at objects that are for.
When you say "glasses", it is plural. A "glass" is one of the lenses. "Glasses" would refer to both of the lenses, and a "pair of glasses" doesn't mention anything about the frame, but it mentions the two lenses. The frame is the object that joins the two lenses so you don't have to wear contacts and so it can stay on your head. When you say "a pair of glasses", you are referring to the "pair of lenses", not the frame. The frame holding the two lenses makes us think that it is one object, when the word "glasses" refers only to the lenses, not the frame. That is why it is called "a pair of glasses".
Plastic
glasses
Ones with varifocal lenses.