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I was just curios to know how many physicists out there personally own a laser. If you own a laser, what do you do with it?
Danger said:Jonny, don't rule anything out just because it appears to be expensive. In the same manner that you obtained your laser, other equipment might become available. Try to find some surpus outlets or recycling places that might have the requisite mirrors, adjustable stages, etc. for making holograms. For instance, Efton Science (formerly Edmund Scientific) used to have stuff like that at very reasonable prices. I haven't seen one of their catalogues in over 20 years, but they're still in business. I believe that they still have their headquarters in New Jersey.
Even if that approach doesn't work, keep track of advances in the field of holography. Maybe it will simplify even further. I can remember when the only way to view a hologram was to look through it at the same laser that was used to produce it. Look at where we are now compared to that.
robphy said:I have a laser pointer that I use when I give talks.
I have a laser printer that I use when I distribute my syllabus.
I would like to get my hands on a laser and matching ccd camera and do some quantum mechanics demonstrations like http://ophelia.princeton.edu/~page/single_photon.html .
Yeah, cats love 'em. I don't know about others, but it confuses the hell out of Lucy if I put the dot on her body. She can see it, but not feel it, so she can't figure out if it's really there or not. She was psychotic when I bought her, and that doesn't help any.krab said:I also use it to exercise my cat.
:rofl: :rofl: :rofl:Danger said:Yeah, cats love 'em. I don't know about others, but it confuses the hell out of Lucy if I put the dot on her body. She can see it, but not feel it, so she can't figure out if it's really there or not. She was psychotic when I bought her, and that doesn't help any.
I laughed. :grumpy:Danger said:She was psychotic when I bought her, and that doesn't help any.
Danger said:I think, Jonny, that you're combining a couple of things that don't go together. At least, I've never heard of slits being used in a camera set-up, which is what I assume you mean regarding CCD's. That's a straight photoelectric phenomenon.
The dual slit experiment is intended to demonstrate the nature of light as to its wave-like and particle-like attributes. In that case, it's one photon going through the slit mask, not two. Whether it emerges as a particle or a wave (neither, really, but that's moot) depends upon the experimental set-up.
Physics is the branch of science that deals with the study of matter, energy, and their interactions. Lasers, on the other hand, are devices that produce highly focused beams of light through the process of stimulated emission.
Lasers have a significant impact on physics research and technology. They are used in fields such as quantum mechanics, optics, and spectroscopy, and have enabled scientists to make groundbreaking discoveries in these areas.
Lasers work by emitting light through a process called stimulated emission. This is achieved by exciting atoms or molecules in a medium, such as a gas or crystal, to a higher energy state. As the atoms or molecules return to their ground state, they emit photons of light that are all in phase and have a specific wavelength.
Lasers can be dangerous if not used properly. They can cause eye damage, skin burns, and even fire if not handled with caution. It is important to follow safety guidelines and wear appropriate protective gear when working with lasers.
Yes, anyone can own a laser, but there are regulations and restrictions on the type and power of lasers that can be owned by individuals. It is important to research and follow the laws and guidelines in your area before purchasing or using a laser.