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Light is famous for being the fastest thing in the universe. Everybody knows that nothing can go faster than the speed of light. However, the speed of light does not always stay the same. It travels at its fastest in the vacuum of outer space. It travels almost as fast through air but a lot slower through glass. When light travels from one substance into another, it does strange things because of this change in speed. Lenses are devices built to take advantage of these properties of light. Lenses come in two basic types: convex and concave. Whereas convex lenses magnify the images of things seen through them, concave lenses shrink the images.
A concave lens is a thin piece of glass (or sometimes plastic) with two hollow curved surfaces. It is like a flat piece of glass with a shallow bowl in each side. Because the surface of the lens is curved like that, the normal lines at each point on the lens are slanted more to the side, pointing more toward the center the closer they are to the rim of the lens.
When light moves from a denser substance like glass to a lighter substance like air, exactly the reverse of this happens. It bends away from the normal line. This is the key to understanding how concave lenses work. Because all the normal lines on the surface of a concave lens point inward, the light rays spread out when they enter the lens, traveling more away from each other. When the light leaves on the opposite side, it bends away from the normal lines. However, because the other side is also bowl-shaped but facing in the other direction, the normal lines all slant the other way. So the rays spread out yet again. This makes the light rays that form the image slope at wider angles relative to each other, which gives the eye the impression that they have come from a smaller image seen up close. Concave lenses are used to see more in a single field of vision than would normally fit into it.
Gonzalo Abernathy
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What glass is used in light microscope lenses?
Optical microscopes use refractive lenses, typically of glass and occasionally of plastic, to focus light into the eye or another light detector. hope it helps... kinda
What instrument that uses light and two or more lenses is used to view cells?
A microscope.
Why are images observed in a light microscope reversed and inverted?
The lenses used reversed the image.
What is an object that bends light and is triangular?
A prism is an object that can bend light and has a triangular shape. It has two triangular bases and three rectangular sides, which causes light to refract or bend when it passes through it, separating it into different colors. Prisms are commonly used in optics and experiments to study the properties of light.
How are lenses used in a microscope?
The simple answer: the lenses focus the light passing through them so that it magnifies what you see. The lens portion of a microscope works just like a magnifying glass, or the lenses in binoculars or telescopes. They also help focus the light in the same way a person with bad vision uses glasses or contacts, to make the image clearer. Note: there are more parts involved then just the lenses in a microscope. However, I am not an expert and cannot say for certain what all is involved.
What is the name given to a curved piece of glass which it used to bend light rays?
Concave or convex lenses
What objects use convex lenses?
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.
What is used to bend electrons in an electron microscope?
Magnetic lenses are used to control the electron beam in an electron microscope. The magnetic field produced by the magnetic lenses deflects the energetic electrons. They are typically called magnetic lenses because they deflect the electron beam like optical lenses deflect light.
Is lenses a noun?
Yes, the word 'lenses' is a noun, the plural form of the noun 'lens'; a word for a transparent, curved piece of material used to bend rays of light used to view an image; the part of the eye behind the pupil that bends light to produce an image on the retina; a word for a thing.
What are the different types of lenses?
convex and concave are two types of lenses that are used to correct defects in vision.
Can light waves bend?
Yes, Light waves can bend and this phenomenon is known as "Diffraction of light". When light passes through small opening or strikes to sharp edges, due to its wavey form, it bends according to its wavelength.
What is used to bend light in binoculars?
A lens
What are prismatic lenses?
A prismatic lens generally refers to any type of lens covered in small bulges or pyramid structures. Each small pyramid on the lens acts as a prism and causes light coming straight through the lens to refract (bend) sharply to one side.The many small prisms effectively widen the beam of light.These types of lenses are commonly used on flood lights and florescent ceiling fixtures to disperse the light over a wider area.
What are the use of concave?
Concave lenses are used todiverge rays of light.
Does a convex lens split the white light into a spectrum of colored light?
Only the cheaper convergent lenses do that. It's considered a flaw in a lens of it separates colors, and many techniques are used to create the glass, build lenses out of layers of different types of glass, and coat the lenses, all in an effort to minimize the separation of colors on their way through the lens. That's one of the reasons that serious astronomical telescopes are no longer built with giant lenses.
Why is a concave mirror used in microscopes instead of convex lenses?
To focus AND reflect light through the specimen slide to the lenses.
What glass is used in light microscope lenses?
Optical microscopes use refractive lenses, typically of glass and occasionally of plastic, to focus light into the eye or another light detector. hope it helps... kinda
