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How long does it take a pulse of laser light to reach Mars and back if they both are at their closest approach?
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∙ 9y ago
around 96 days
Wiki User
∙ 9y ago
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How can the speed of light and a laser beam be used to measure the distance between two satellites?
As the speed of light is thought to be an absolute speed (it is not, but close enough) we use it and a time frame, usually a year, to describe how far things are away. The term is : Light Year ( the distance light will travel in a year ) roughly 6 trillion miles For instance the closest star is thought to be four light years away.
How does a laser-ranging device work?
The laser light is pulsed and shone onto a reflective surface. The returned reflection is picked up by a phototransistor. The time taken for the pulse to be sent and returned, can be measured by electronics within the device. The speed of light is 300,000 Km /sec, (186,000 miles/sec) which is very fast, but finite. The timing circuits within the device have to be very accurate and stable. This is acheived by using crystal oscillators within the device, to act as timing comparison.
Is it possible to see light move with a high speed camera?
Scientists have created a camera that has the ability to take 1012 (That is 1 with 12 zeros) FPS. And with a short enough pulse from a laser, they have the ability to watch the small beam move through space. You can see the research and many videos of this taking place on http://web.media.mit.edu/~raskar//trillionfps/ . This should answer your question thoroughly.
Which blood vessel has a pulse?
The blood vessel that has a pulse is an artery. Veins do not have enough blood pressure to register a pulse.
How does a light year work?
A light year - is the distance travelled by a pulse of light in one calendar year. It's approximately 5,869,713,600,000 miles !
What is the difference between continuous and pulsed wave laser?
Continuous I assume would mean a constant flow of light from the laser in the form of a wave train. Conversely, a pulse is only a single wave emitted by the laser.
How can the speed of light and a laser beam be used to measure the distance between two satellites?
As the speed of light is thought to be an absolute speed (it is not, but close enough) we use it and a time frame, usually a year, to describe how far things are away. The term is : Light Year ( the distance light will travel in a year ) roughly 6 trillion miles For instance the closest star is thought to be four light years away.
The light from a red laser pointer has a wavelength of about 600 nm If this laser has a power of 0.23 mW what is the momentum carried by a 4.9s pulse of this radiation?
Who cares so long as it toasts yer bagel
Why is the pulse of the neck checked instead of the radial pulse?
because the pulse in the neck is closest to the heart
How does laser light detection works by?
A laser can detect the distance of an object as well as an object's reflectance, or intensity. To detect the distance of the laser source to a particular object, the round trip travel times of a laser pulse are accurately measured and recorded from the source, to the target and back. Since the speed of the laser pulse is known, using the formula distance = velocity * time, the distance can be calculated. Laser sensors can also record the amount of light returned from a target surface, which is characterized by its reflection coefficient and its surface properties. For example snow would be the highest reflectance and asphalt would be one of the lowest.
How does Q switch laser work?
The Q switch laser allows light pulses with extremely high peak power to operate in continuous wave. The Q switch leads to lower pulse repetition rates.
Wavelengths in lasers?
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.
What is the principle behind gas laser?
This is a very basic overview of what is happening. The laser cavity is filled with gas, most commonly He-Ne. Then a flash lamp acts as the pump that energizes the He-Ne by making the valence electrons of the atoms goes to a higher (less stable) energy orbital. These electrons then de-energize by dropping back down to a lower orbital. This energy change then leads to the emission of a photon of light. Since all the atoms of the gas are doing this at the same time a pulse of light is emitted. This pulse of light is then reflected out of the laser cavity and collimated producing a laser beam.
What is a bioplasma?
A bioplasma is a short laser pulse of biological origin.
How do you create a laser beam?
A: By applying to a laser diode pulse of current enough energy to emit photons at a certain frequency.
Difference between he-ne laser and ruby laser?
1.he-ne laser is gaseous state. Ruby is solid state laser. 2.he-ne laser requires electrical pumping. ruby laser requires optical pumping. 3.he-ne laser has 4 energy levels. ruby has 3 energy level. 4.he-ne laser gives continuous output. ruby laser gives output in form of pulse 5. he-ne laser is cheaper
For what is used a pulsed laser?
A pulsed laser is used in many different situations from hair removal to surgery. The frequency and wavelength of the pulse determines the suitability of the laser for each type of use.
