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How is laser light different from light emitted from a flashlight?
Wiki User
∙ 14y ago
Laser light is different in many ways. These are the biggies.
a) Laser light is almost monochromatic. Because it is created by exciting a specific substance to emit photons, the light emitted by the source is almost all one specific wavelength. The light from a flashlight contains all of the colors in the spectrum, forming "white light".
b) Laser light is very coherent. This means that the waves leaving the laser remain in phase for a very long time. Light from a flashlight is not coherent. As a result, a laser can project a distinct beam of light much farther than a flashlight.
c) Laser light is directional. This means that the beam of light being emitted does not spread much with distance. Hence it can still appear as a point of light many meters away from the source. A flashlight beam will quickly spread the further it is viewed from the source.
Because of these fundamental properties, lasers are an excellent experimental device.
Wiki User
∙ 14y ago
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What tool is used to help determine the colors of light emitted by a flashlight?
My guess is of these four:a psychrometera laser pointera spectroscopean anemometer
How a beam of laser light is different than the beam of light produced by a flashlight?
It does depend on the kind of laser, but the main difference is that a laser emits a focused beam of light of the same wavelength (i.e. color) while a flashlight emits light of many different wavelengths, and 'beams' this light by reflecting it using a concave mirror built into it behind/around the bulb.
What does laser beam mean?
A laser is the device itself, the beam is.. well, the beam coming out of the laser.
Wendy wants to know which colors of light are emitted by her flashlight. Which tool could help her?
a poop o meter
What laser light like?
Laser rays are many light rays focused into a single light ray. That ray is a laser ray. The more lights rays focused into a single ray, the more powerful the laser ray.
How are a laser beam and flashlight beam alike and different?
A laser is L ight A mplification by S imulated E mission of R adiation a flashlight is pretty much a lightbulb that in some cases with the design of it can be amplified They're both alike as they both consist of photons. They're different because the laser only emits one wavelength, while a flashlight emits a mix of wavelengths. They're also different because in the light from the laser all the light waves are emitted in synch(crests and troughs appears simultaneously) while from the flashlight they appear every which way
What tool is used to help determine the colors of light emitted by a flashlight?
My guess is of these four:a psychrometera laser pointera spectroscopean anemometer
How a beam of laser light is different than the beam of light produced by a flashlight?
It does depend on the kind of laser, but the main difference is that a laser emits a focused beam of light of the same wavelength (i.e. color) while a flashlight emits light of many different wavelengths, and 'beams' this light by reflecting it using a concave mirror built into it behind/around the bulb.
How are a laser beam and a flashlight beam alike and different?
A LASER, or Light Amplification by Simulated Emission of Radiation, and is made by causing a particular substance to emit photons, almost all of which are one wavelength. A flashlight, however, uses a light bulb, which emits light due to the filaments, and will spread out. Both, however, are forms of light.
What is a laser modulator used for?
A laser modulator is used to change modulate a beam of light (or laser). The easiest way that they modulate the laser, or light beam, is by changing the rate at which the laser is emitted from the source.
What does laser beam mean?
A laser is the device itself, the beam is.. well, the beam coming out of the laser.
What does the S in LASER stand for?
Stimulated Light Emitted by the Stimulated Emission of Radiation
If you hold a flashlight at the speed of light can you still see it?
Need clarification please. The "it" you are referring to seeing, does that represent; A) the flashlight, B) the light from the flashlight, or C) "the speed of light"? Did you mean to imply that the flashlight was switched on? Is it an "old fashioned" bulb, an LED bulb, a laser light, or some other energy? Just wondering.
Wendy wants to know which colors of light are emitted by her flashlight. Which tool could help her?
a poop o meter
What is a real example of a ray in geometry?
A laser, light from a flashlight, and radio waves are all rays
What medium is disturbed when a light wave is emitted from a flashlight or a candle?
None. Electromagnetic wave do not need a medium to propagate through.
What laser light like?
Laser rays are many light rays focused into a single light ray. That ray is a laser ray. The more lights rays focused into a single ray, the more powerful the laser ray.
