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When were mirrors invented?
No one in particular invented the mirror. Reflection is a property of light, so as long as there has been light, there have been surfaces off of which it reflects. The first mirrors were likely pools of water, or pieces of volcanic rock known as obsidian. The most modern version of the mirror that we currently use is usually credited to scientist Justus von Liebig. He applied silver to glass with a reduction of silver nitrate.
Why concave and convex mirrors are called spherical mirrors?
Concave and convex mirrors are called spherical mirrors because their reflecting surfaces are part of a sphere. This means that if the mirror were extended to form a complete spherical shape, it would have the same radius of curvature for all points on its surface.
Does light reflect from all surfaces?
No, not all surfaces reflect light. Surfaces that are smooth and polished, like mirrors, reflect light well. Rough or matte surfaces may absorb or scatter light instead of reflecting it.
Are all ray ban sunglasses made of glass?
No, not all Ray-Ban sunglasses are made with glass lenses. Ray-Ban also offers sunglasses with lenses made of other materials such as polycarbonate or plastic.
What colour would be inside a box of mirrors?
If you visit a site called Librivox(www.librivox.org) you will be able to download some audio books. Also, LimeWire(www.limewire.com) can be used but be careful not to violate copyrights. You could even find some cheap audio books on EBay.
Why is a mirror made from glass?
1) We know how to make (very) flat glass. 2) The glass keeps the reflecting surface (usually a metal) from corroding.
What advantages do reflecting telescopes have over refracting telescope?
One advantage of reflecting telescopes is that the mirrors can be very big. Large mirrors allow reflecting telescopes to gather more light than refracting telescopes do. Another advantage is that curved mirrors are polished on their curved side, which prevents light from entering the glass. Thus any flaws in the glass do not affect the light. A third advantage is that mirrors can focus all colors of light to the same focal point. Therefore, reflecting telescopes allow all colors of light from an object to be seen in focus at the same time.
What advantage do reflecting telescopes hAve over refracting telescopes?
One advantage of reflecting telescopes is that the mirrors can be very big. Large mirrors allow reflecting telescopes to gather more light than refracting telescopes do. Another advantage is that curved mirrors are polished on their curved side, which prevents light from entering the glass. Thus any flaws in the glass do not affect the light. A third advantage is that mirrors can focus all colors of light to the same focal point. Therefore, reflecting telescopes allow all colors of light from an object to be seen in focus at the same time.
What advantages do reflecting telescope have over refracting telescope?
One advantage of reflecting telescopes is that the mirrors can be very big. Large mirrors allow reflecting telescopes to gather more light than refracting telescopes do. Another advantage is that curved mirrors are polished on their curved side, which prevents light from entering the glass. Thus any flaws in the glass do not affect the light. A third advantage is that mirrors can focus all colors of light to the same focal point. Therefore, reflecting telescopes allow all colors of light from an object to be seen in focus at the same time.
Why do people say that mirrors are doorways?
It is easy to think of mirrors as doorways because one not only sees one's face in the mirror, but also the room in the background. It is not at all difficult to imagine that the mirror is not glass but an open doorway into that visible space. This is exactly why birds sometimes try to fly through a mirror, or through a glass window reflecting the sky.
What is the chemical elements in mirrors?
All a mirrors are are pieces of glass with a silver background. Glass is generally comprised of silicon compounds (like sand) that are heated to high temperatures to a point where their crystalline structure changes and it turns into glass.
What does a room made of all mirrors reflect?
Nothing ,if it is made of mirrors there would be no light to reflect !
When were mirrors invented?
No one in particular invented the mirror. Reflection is a property of light, so as long as there has been light, there have been surfaces off of which it reflects. The first mirrors were likely pools of water, or pieces of volcanic rock known as obsidian. The most modern version of the mirror that we currently use is usually credited to scientist Justus von Liebig. He applied silver to glass with a reduction of silver nitrate.
Which type of telescope uses concave mirrors to increase the size of the image being viewed?
Refracting
Why are telescope mirrors made of glass?
To improve resolving power you want your telescope as wide as possible. Lenses larger than one meter are not really feasable while 10 meter mirrors have been built successfully. Lenses focus different colors (wavelengths) of light different places (chromatic abberation) making good imagery difficult. Mirrors don't care about the wavelegth.
What uses mirrors to focus light from the object being viewed a refracting telescope or a reflecting telescope?
A reflecting telescope uses a curved mirror to concentrate the light from distant stars, and is a very useful technique. There are very clever techniques and technicians, which can produce a mirror perfect over all its area, to within part of the wavelength of light!! The alternative method of using a glass lens, suffers from various difficulties, such as distortion and loss of light. You do not ordinarily consider focus in an astronomical telescope, for all the stellar objects are essentially at infinity.
Are there any mirrors that can specifically be used for decoration?
Yes, you can get mirrors made and all types of shapes and even colors that can be used just for decoration.
