0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
When were deformed mirrors invented?
Parabolic mirrors were described and studied in classical antiquity by the mathematician Diocles in his work On Burning Mirrors. Ptolemy conducted a number of experiments with curved polished iron mirrors, and discussed plane, convex spherical, and concave spherical mirrors in his Optics.
What person invented the mirror?
The romans. Also it was made by accident Mirrors of polished copper were crafted in Mesopotamia from 4000 BC, and in ancient Egypt from around 3000 BC. In China, bronze mirrors were manufactured from around 2000 BC. Metal-coated glass mirrors are said to have been invented in Sidon (modern-day Lebanon) in the first century AD, and glass mirrors backed with gold leaf are mentioned by the Roman author Pliny in his Natural History, written in about 77 AD. The Romans also developed a technique for creating crude mirrors by coating blown glass with molten lead. (research from wikipedia.com) The history of mirrors dates back to ancient times when mankind first saw reflections in a pond or river and considered it magic. Polished stone or metal was used in the first early man-made mirrors. Later glass was used in combination with metals like tin, mercury, and lead to create mirrors.
What is the difference between parabolic and concave mirrors?
In the case of concave mirrors parallel rays, parallel to the principal axis and incident near the pole(axial rays), after reflection will converge to the principal focus.Rays reflected from the marginal portions of the mirror(marginal rays) will converge to points nearer than the focus. Due to this the image formed by a concave mirror of large aperture will be blurred. This defect is called spherical aberration. This defect can be overcome by using parabolic mirrors. In a parabolic mirror all the rays, axial rays as well as the marginal rays, incidenting on it after reflection will converge to the same principal focus. This is due to the geometric property of the parabola, that is parabola allows only one focus.Hence in a parabolic mirror there is no spherical aberration and the image will be sharp and clear.
How do you use spherical in a sentence?
The spherical rock turned out to be a dinosaur egg.
What is a convex mirror and what is it used for?
Convex mirrors are also curved mirrors, but the silvered surface bulges outward instead of inward, as with the concave spherical mirror. As with all mirrors, the angle of incidence of a ray of light is equal to the angle of reflection with respect to a normal on the surface. On a curved surface the normal changes with the curvature. Therefore, the light rays will diverge from the object. If the rays of light are extrapolated back to the point where they converge, this will be the point where the image is formed. For reflections off a convex mirror, the image is virtual and upright. Use of Convex Mirrors: Convex mirrors are often used in car wing-mirrors because they have a greater field of view than a similar plane mirror. However the greater field of view is at the expense of making objects seem further away than they are in reality. Hence the expression seen etched on to the mirrors, 'Objects in Mirror are Closer than they Appear'. Concave mirrors are also used as security mirrors as they enable the viewer to see over a greater region of space another use for this mirror is used in making sunglasses and telescopes. bet you didn't know that did u ???
What are spherical mirrors?
The most curved mirrors are spherical mirrors. The centre of curved surface is called center of curvature. There are two kinds of spherical mirrors. Concave and convex mirror.
What are curved mirrors?
Curved mirrors are mirrors that have a spherical side. example - concave and convex.
Are the laws of reflection for plane mirrors valid for spherical mirrors?
seyimok
What are the uses of spherical mirrors?
that mirror is mystery
When were deformed mirrors invented?
Parabolic mirrors were described and studied in classical antiquity by the mathematician Diocles in his work On Burning Mirrors. Ptolemy conducted a number of experiments with curved polished iron mirrors, and discussed plane, convex spherical, and concave spherical mirrors in his Optics.
Why concave and convex mirrors are called spherical mirrors?
A spherical mirror is part of a sphere. If the sphere is cut into two, the inside of a piece will be concave mirror, while the outside will be convex mirror.
Is convex and concave mirrors also known as spherical mirrors?
Yes convex and concave mirrors are also known as spherical mirrors. If mercury coating is made on the convex side of the spherical then mirror is known as concave mirror. If mercury coating is made on the concave side the convex portion would reflect the light fallen so it is named as convex mirror. Actual just a small part of the sphere is taken out and this would act as the spherical mirror.
Which mirror show virtual image of object placed in front of it?
Plane Mirror And Other Spherical Mirrors Bulged Outside, Such As Convex Mirrors
What do concave and convex mirrors have in common?
Both the mirrors produce an virtual image when the object is placed in between the pole and focus . And also obviously both are a part of the category of spherical mirrors.
is plane mirror is a spherical mirror why?
plane mirror is never a spherical mirror,spherical mirrors are made up by cutting the part of the sherical balls and then polishing them.while the plane mirror is just a sheet of polished glass
Is plane mirror a spherical mirror why?
plane mirror is never a spherical mirror,spherical mirrors are made up by cutting the part of the sherical balls and then polishing them.while the plane mirror is just a sheet of polished glass
When is image distance negative in spherical mirrors?
well at 156 kgls the mirrors begin to angle auxtributly. this forms a slight arc and allows image distance to become negative.
