They come in different frequencies.
They come in different frequencies.
They come in different frequencies.
They come in different frequencies.
no. LASER uses light frequencies.
A laser generates an electromagnetic wave operating at light frequencies.
AnswerTypically a laser (light amplification by stimulated emission of radiation) produces light of one frequency or of an extremely narrow band of frequencies. They initial laser "beam" was thought of as being one color, or having one frequency (monochromatic). But there are lasers that produce light across a broader spectrum, or on a multiple of (specific) frequencies, depending on the laser. A link is provided below to the Wikipedia post on the laser.AnswerA laser produces an infinite number of wavelengths, but they are all very close to a characteristic single value. AnswerIf the laser is pulsed then the shorter the pulse the larger the bandwidth (the range of frequencies) of the pulse. Femtosecond (one thousandth of a billionth of a second) pulses produce "white" laser light which contains all the visible frequencies.
LEDS are more reliable than lasers because they operate at lower frequencies therefore do ot suffer any catastrophic degradation or even gradual degration prevalant in laser
A laser beam typically consists of light with one frequency (or color) corresponding to a single wavelength. Energy levels in a laser beam depend on the material and process used to generate the laser light, often resulting in coherent and high-intensity light output.
Coherent light (like a laser) is a single frequency. Polychromatic light is, by definiation, multiple frequencies and cannot be coherent.
The CO2 laser is used for cutting steel as a routine industrial process, and with an excellent surface finish. These operate in the infra-red at about 10 micron wavelength. However, insofar as the colour itself is concerned, the higher frequencies (blue and violet) contain higher energies.
A laser MAY heat compressed air, but the amount of heating depends on several factors. Air, whether compressed or not, can absorb electromagnetic radiation in the range of frequencies that are used in lasers. How much heating occurs depends on the composition of the air. Note that while air has a typical average composition, the amount of nitrogen, oxygen, water, CO2, and pollutants can vary considerably. Different molecules absorb more strongly in certain characteristic wavelengths. This is the reason spectroscopy can be used to analyze the composition of a sample. It also depends on the exact frequency of the laser; different lasers operate at different frequencies.
All tunable LASERs are LASERS, however not all LASERS are tunable. In a tunable laser the lasing medium, which is typically a gas, dye or crystal, can be altered to produce slightly different frequencies, thus allowing the laser to be 'tuned' or frequency changed where most LASERS produce a very narrow band of radiation frequencies.
The list of weapons that start with laser are: Laser axe Laser bow Laser chaingun Laser chainsaw Laser cannon Laser crossbow Laser daggers Laser gatling gun Laser knife Laser machete Laser machine gun Laser rapier Laser rocket launcher Laser scythe Laser shotgun Laser slingshot Laser sword Laser tommy gun Laser whip and countless others
no
That would be hard, if not impossible. Lasers work purely by reflection back from an object. Colour information comes from the frequency of light. Your detection equipment would have to simultaneously detect the laser light and the different frequencies of light.