0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What happens to a laser beam when you pass it through a silt?
It's photons will interfere with themselves apparently. It's very strange that this happens. Particles don't interfere with themselves, but waves do.
Can sound waves travel through lasers?
Yes. The laser beam is a beam of coherent light. Just photons. Meanwhile the sound wave is travelling through a medium....which isn't really true of the photons, they'll travel whether there's a medium or not. There's essentially no interaction or interference between the two. Saying that I can think of ways you could detect sound waves using lasers...but I wouldn't worry about that - sound will travel just fine through a laser beam providing it still has a medium to travel through. i.e: a laser can be present in a strong vacuum but sound won't pass through a strong vacuum - at least not to any useful degree....but that's not the laser stopping it.
Are there any ways to pass through a laser sensor without being detected?
As the question asked about "passing through" a laser sensor, the answer speaks to the breaking of the laser beam. And that's not something that you can do. Breaking the beam will trigger the sensor. If an investigator has an idea about the laser itself, it may be possible to "substitute" for the beam being used in the sensor, but most laser sensors will pick up any attempts to dump another beam in over the top of the extant one. Forget about mirrors and such. The "smart" laser sensors use a beam too small to "split" with mirrors. Rerouting with fiber optics is equally futile. What you've seen on those TV shows and in movies is pie in the sky - you can't do that. About all you can do is detect the beam and avoid it.It might be worth noting that anyone using a laser may also be using infrared IR sensors. (I would.) These sensors are notlasers and are completely passive; they emit nothing at alland cannot be "seen" in any way. (See the link below "What is a PIR alarm system?" for more details). If something is worth protecting with a laser, an IR detector would be an easy "add on" to that system. In fact, given a choice, the IR would be a better first choice.
Can electromagnetic waves pass through vacuum?
Yes they can. Sunlight is just such a wave!
How does a bar code laser scanner work?
A bar code laser scanner works by shining a bright light (laser light) at the barcode and measuring the reflected beam. In order to scan the entire barcode very quickly, the light is bounced off a spinning disk to cover the entire barcode in one pass.
How does a laser beam repair a retina?
The laser works like a sewing machine to repair a detached retina, the membrane that lines the interior of the eye. The laser beam is adjusted so that it can pass harmlessly through the lens and focus on tiny spots around the damaged area of the retina. When it is focused, the beam has the intensity to "weld" or seal the detached area of the retina back against the wall of the eyeball.
What causes sunlight to pass through the upper atmosphere?
Sunlight can pass through atmosphere. But not the part containing UV rays.
What happens to a laser beam when you pass it through a silt?
It's photons will interfere with themselves apparently. It's very strange that this happens. Particles don't interfere with themselves, but waves do.
Can sound waves travel through lasers?
Yes. The laser beam is a beam of coherent light. Just photons. Meanwhile the sound wave is travelling through a medium....which isn't really true of the photons, they'll travel whether there's a medium or not. There's essentially no interaction or interference between the two. Saying that I can think of ways you could detect sound waves using lasers...but I wouldn't worry about that - sound will travel just fine through a laser beam providing it still has a medium to travel through. i.e: a laser can be present in a strong vacuum but sound won't pass through a strong vacuum - at least not to any useful degree....but that's not the laser stopping it.
Why radar beam easily pass through ice?
Because ice is transparent.
Why does sunlight energy pass through car windows but the energy radiated from objects inside the car does not?
sunlight passes through exciting the particles in the car warming it up. The heat is then in the air molecules which can't pass through the glass.
Are there any ways to pass through a laser sensor without being detected?
As the question asked about "passing through" a laser sensor, the answer speaks to the breaking of the laser beam. And that's not something that you can do. Breaking the beam will trigger the sensor. If an investigator has an idea about the laser itself, it may be possible to "substitute" for the beam being used in the sensor, but most laser sensors will pick up any attempts to dump another beam in over the top of the extant one. Forget about mirrors and such. The "smart" laser sensors use a beam too small to "split" with mirrors. Rerouting with fiber optics is equally futile. What you've seen on those TV shows and in movies is pie in the sky - you can't do that. About all you can do is detect the beam and avoid it.It might be worth noting that anyone using a laser may also be using infrared IR sensors. (I would.) These sensors are notlasers and are completely passive; they emit nothing at alland cannot be "seen" in any way. (See the link below "What is a PIR alarm system?" for more details). If something is worth protecting with a laser, an IR detector would be an easy "add on" to that system. In fact, given a choice, the IR would be a better first choice.
Can electromagnetic waves pass through vacuum?
Yes they can. Sunlight is just such a wave!
How does a bar code laser scanner work?
A bar code laser scanner works by shining a bright light (laser light) at the barcode and measuring the reflected beam. In order to scan the entire barcode very quickly, the light is bounced off a spinning disk to cover the entire barcode in one pass.
How can you use a light beam to identify a solution from a suspension?
Because of the different properties of solutions and suspensions, a beam of light can be used to differentiate the two. If a beam of light passes through the sample, it is a solution, not a suspension. Conversely, if a beam of light does not pass through a sample completely, it is a suspension, not a solution.
What happens to a beam of light if you put a piece of wood in front of it?
The wood will cast a shadow, as the light can not pass through wood.
How are the colors of the lights changed at a laser light show at the concert?
They are changed by a lens in the light machine, They have a white bulb and change the slides to pass through the tiny holes to make it seem as if it was a laser.
