0
- A _____________ uses two convex lenses to magnify small, close images.
What else can I help you with?
What are 5 uses of a concave lens?
The convex lenses can be used in magnifying glasses. They are thicker in the center than in the edges. They are also used in the glasses of those affected with farsightedness. The shape of the lenses used for our eyes is also convex so as to allow it to fit snugly into the eye in shape.
What are the two types of lenses that are used to bend light?
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.
What is a non example of a microscope?
a non example of a microscope is a teddy bear anything that is not living like a banana
What are the two types of curved mirror called?
they are called concave mirror ... mirrors whose center bulges out are called convex, and can reflect a wider view than a flat mirrored surface, but the objects are "larger than they appear", and also "closer than they appear." These are most often seen on right hand mirrors on vehicles, to help minimise blind spots. mirrors whose center is recessed are called concave (remember the term by thinking of a shallow cave.) Depending upon how close you are to the mirror's focal point, objects appear larger than they really are, or upside down. These are often seen in makeup mirrors so you get a clearer view of your face when shaving or applying makeup. Combinations of both convex and concave mirrors are seen in funhouses of amusement parks, to make the viewer look skinnier and taller, shorter and fatter, or even upside down.
How does technology help scientists?
A classic example would be the development of better lenses and of ways of using lenses together. Biologists are able to study many species without the need to get close to them, using binoculars. Microbiologists have discovered and studied an enormous number of species using microscopes. Astronomers still use optical telescopes to advance knowledge of the sky.
What concaave lenses and convex lenses make things look smaller?
Concave lenses make objects look smaller when they are placed close to the lens, while convex lenses make objects look smaller when they are placed far from the lens. This effect is due to the way light rays are refracted by the different lens shapes, causing the image to appear reduced in size.
What is the difference between glasses that help people see nearby objects and faraway objects?
Glasses for nearby vision, often called reading glasses, have convex lenses that magnify close objects, helping those with presbyopia see better at short distances. In contrast, glasses for distant vision, known as distance glasses or corrective lenses for myopia, use concave lenses to diverge light, allowing individuals to see faraway objects more clearly. The primary difference lies in the lens curvature designed to correct specific vision impairments based on the distance of the objects being viewed.
What are the different types of lenses?
Some common types of camera lenses include prime lenses, which have a fixed focal length; zoom lenses, which have variable focal lengths; wide-angle lenses, which capture a broader field of view; telephoto lenses, which magnify distant subjects; and macro lenses, which allow for close-up photography.
Which lens is the type of lens that is used in a hand lens?
== == It is used to magnify/ or make things appear closer?to magnify small objects
What lens can correct the hyperopia?
Convex lenses are used to correct hyperopia, also known as farsightedness. These lenses bend light rays to focus them properly on the retina, helping those with hyperopia to see objects at a close range more clearly.
How do people use lenses to see things a long way away?
Lenses are either concave or convex. Concave lenses curve inward from both sides, and convex lenses curve outward one side and inward on the other. Concave and convex lenses change the image to be able to see from close or far distances.These are used for glasses, magnifying glasses, and telescopes.
Why do convex lenses have shorter focal lengths than thin convex lenses?
The convex lenses are converging lens so when the curvature of the lens increases the focal length will decrease which helps when looking up close. A thin convex lens is for seeing things from a distant.
What lens does farsighted people need?
Farsighted people typically require convex lenses to help them see objects up close more clearly. These lenses are thicker in the center than at the edges, helping to bring close-up objects into focus for those with farsightedness. An eye examination by an optometrist or ophthalmologist can determine the specific lens prescription needed.
Does a convex lens help you if you are farsighted?
Yes, a convex lens can help correct farsightedness by converging light rays to focus on the retina, improving close-up vision. The lens bends light towards the center, allowing the eye to focus properly and see objects up close more clearly.
How binoculars lenses make objects closer?
Binoculars have two lenses that work together to magnify objects seen through them. The objective lens at the front gathers light and creates a real, inverted image close to the front focal point. The eyepiece lens then magnifies this image to make it appear closer when viewed through the eyepiece.
What type of lens is used to correct hypermetropia?
Convex lenses are used to correct hypermetropia, which is also known as farsightedness. These lenses help to converge incoming light rays onto the retina, allowing individuals with hypermetropia to see objects up close more clearly.
Is simple microscope contain Plano convex lens?
Yes, a simple microscope typically uses a plano-convex lens as the magnifying lens. The plano-convex lens has one flat surface and one curved surface, which helps to magnify the object when placed close to it.
