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Why a parabolic or concave polished reflector is used in an electric heater?
Wiki User
∙ 12y ago
Electric Heaters contain a heating element that reaches a high temperature. The element is usually packaged inside a glass envelope resembling a light bulb and with a parabolic reflector to direct the energy output away from the body of the heater. The element emits infrared radiationthat travels through air or space until it hits an absorbing surface(parabolic reflector), where it is partially converted to heat and partially reflected. This heat directly warms people and objects in the room, rather than warming the air.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoI think it is because they help to focus the heat energy in a specific direction.
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What type of mirror is found around the bulb of flashlight?
Typically a concave parabolic mirror with a metallic reflector.
Does the concave mirror in a flashlight produce light rays that converge?
Answer #1:No, the concave mirror in a flashlight produces light rays that do notconvergebecause concave mirrors reflect light waves to form images, but concave mirrorshave a surface that is curved inward.==============================Answer #2:The ideas behind the concave reflector in a cheap flashlight, the concave reflectorin an auto headlight, and the giant concave reflector of a satellite uplink, are allthe same ... to beam the energy from the focus out in a parallel 'cylindrical' beamthat doesn't converge or, as far as possible, doesn't diverge either.
How are concave mirror used in your daily life?
As lamp reflectors, e.g. car headlights, reflector lights at home.
Why are concave reflectors used in torches and headlamps of vehicles?
The bulb is so placed in a torch that it just lies at the focus of the concave reflector. By doing this, we obtain a parallel beam of light, that is, light rays tend to travel infinitely, thus could be used to see objects for a longer distance.
Is parabolic concave mirror is used in car head light?
Yes, the bulb will be kept at the focus of the parabola so that the light after refelction would go parallel and so it could cover a wide region.
What type of mirror is found around the bulb of flashlight?
Typically a concave parabolic mirror with a metallic reflector.
Is a headlamp reflector concave or convex?
concave
What are the lenses called in a reflector telescope?
The lenses used in reflector telescope is the concave lens.
In a reflecting telescope the objective is a?
mirror with a concave parabolic figure
What mirror causes light rays to converge?
concave mirror and convex lens can be used to focus light rays. they are also called converging mirror and lens respectively. They focus the light at a distance of its focal length.
How is a concave mirrior used in a flashlight?
it is used as the backing reflector for the bulb. because it is concave, the light that hits it is focused into a beam of light.
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.
Does the concave mirror in a flashlight produce light rays that converge?
Answer #1:No, the concave mirror in a flashlight produces light rays that do notconvergebecause concave mirrors reflect light waves to form images, but concave mirrorshave a surface that is curved inward.==============================Answer #2:The ideas behind the concave reflector in a cheap flashlight, the concave reflectorin an auto headlight, and the giant concave reflector of a satellite uplink, are allthe same ... to beam the energy from the focus out in a parallel 'cylindrical' beamthat doesn't converge or, as far as possible, doesn't diverge either.
What is the principal focus of the concave mirror?
Once you measure it and do the math you will know. Use algebra. Parabolic curves formulas.
How does a concave image produce an image?
An image does not produce an image. However, a concave mirror, specifically one witha parabolic figure, forms an image in its focal plane of an infinitely distant object.
How are concave mirror used in your daily life?
As lamp reflectors, e.g. car headlights, reflector lights at home.
How was the solar cooker improved?
The cooker is well insulated, so it stays hot.
