Recent content by Jim H

You can never glue something like this. Glue is not conductive, so can never replace metal. Soldering is fairly easy. Just use a good flux cored electronics solder, NOT plumbing solder or flux. Clean the tip , with emery cloth if needed, to be able to see the copper. Let the iron heat up, put a...

Way back when, I made a michelson interferometer using my argon. I used dryer vent hose to connect the blower, and I think a heavy plate on an innertube? Anyway, I was able to dampen the vibrations enough for a stable pattern

Very cool! I didn't know about these new films. I had originally bought my single mode argon with the intention of trying to make holograms, and bought some not very safe chemicals for the processing, but never got any farther. I may need to try this out when I get a little more money.

405 doesn't emit any IR as it isn't a DPSS laser, so any of those would work just fine. Generally the IR is a very small percentage of the emitted light, but if you are really worried, the 800-2000 would block both wavelengths. The 808 isn't in a parallel beam, and spreads, but the 1064 is in...

I highly recommend the SuspiciousObservers YouTube videos for anyone interested in space, our sun and planet. Ben, who runs it, has been well ahead of the curve on several fronts such as earthquake prediction, climate and space topics in general.

The simplest explanation is usually the correct one. Saying that something ordinary is more likely than it being undead or aliens.

Science is far from settled. Not like yours, but I have had some strange events on a few occasions. My theory about ghosts and other unusual events is based on theories of the universe. One such theory, is that there are an infinite number of parallel universes all coexisting at the same time...

Actually, you must have missed this part which explains why a laser is more desirable: "The point of charging with a laser is the difference of being able to save 5 minutes per bead which adds up to hours and days even of what I am able to produce in my workshop. Not just that but also a...

w/cm^2

Welcome Ken, from Evergreen, CO

That being said, my avatar is a pulse from a YAG laser ionizing air at the focal point. It was a longer exposure, although not that long, but unfortunately I don't remember the other settings. I had to take several, and was actually surprised I caught a nanosecond pulse, although I don't know...

If you can set the speed, ISO and aperture, I think you need to set them for a very short and dark exposure to be able to see the beam as not completely washed out and overpowered by extraneous light, or at least the lowest ISO and smallest aperture you can for a longer exposure. And light...

Not an expert, but I think you would need a focused line along it's length, not just a point.

Welcome! I bought a 2W 405, but still have to mount it to my printer. It's only been maybe 2 years? haha By the way, don't trust the goggles that come with any of them, buy some from a well known company

Not knowing that much about nonlinear crystals, could you frequency double a 532nm, and then use the resulting 266 nm UV for the experiment?