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bifocual
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∙ 14y ago
Wiki User
∙ 15y agoBifocal.
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Why is a pair of glasses a pair if its only one?
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".
Uses two or more glass lenses to magnify either living cells or prepared slides?
compound light microscope
What kind of microscope uses two or more glass lenses to magnify either living cells or prepared slides?
a calorie
Why is the microscope called a compound microscope?
The compound microscope is called compound because the modifier compound means "two or more." A compound microscope has two or more lenses lenses. This is to be distinguished from a simple microscope which has one lens. Such a microscope is structurally equivalent to a magnifying glass, though not necessarily a hand held lens.
Why a microscope is called a compound microscope?
The compound microscope is called compound because the modifier compound means "two or more." A compound microscope has two or more lenses lenses. This is to be distinguished from a simple microscope which has one lens. Such a microscope is structurally equivalent to a magnifying glass, though not necessarily a hand held lens.
Prefix word of having two lenses on one glass?
Bifocals
What bi word means having two lenses on one glass?
The term "bifocal" refers to eyeglasses with two distinct optical powers, typically used to correct both nearsightedness and farsightedness in a single lens.
Microscope made up of two or more lenses?
Yes, two lenses can make a simple microscope. More are usually used. A magnifying glass - one lens - is the simplest microscope.
Why is a pair of glasses a pair if its only one?
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".
What is a light microscope having two lenses called?
a compound microscope
What is the name given to a piece of glass having one or two spherical surfaces?
A lens
Reflecting telescopes differ from refracting telescopes in having what?
Two large objective lenses.
Curved glass that bends light rays?
A lens is a curved glass that refracts or bends light rays. The two principal types of lenses are convex and concave.
What kind of microscope uses two or more glass lenses to magnify either living cells or prepared slides?
a calorie
Uses two or more glass lenses to magnify either living cells or prepared slides?
compound light microscope
What are two examples of lenses that occur in nature?
A microscope and eyeglasses are two examples of scientific lenses.
Why is the microscope called a compound microscope?
The compound microscope is called compound because the modifier compound means "two or more." A compound microscope has two or more lenses lenses. This is to be distinguished from a simple microscope which has one lens. Such a microscope is structurally equivalent to a magnifying glass, though not necessarily a hand held lens.
