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I just bought a vintage hologram watch that the seller listed as "no longer being produced", and that reminded me of how popular holograms (as a novelty) were during the 1980s. Back then, I had a catalog of hologram jewelry that I looked over many times and wished I could get...I still have a...

Forgive me for creating a new thread on a subject that I'm sure I've read about here before, but I did a search and came up empty on the subject. What causes some cheap pointers to leak light? I mean visible laser light that appears in places other than just the beam and/or dot. I've seen a...

I like looking up things online, just for fun. There are several videos of people who claim they have produced X-rays from simple, common things such as nightlight bulbs. This is one example: Producing X-rays from a Cheap Light Bulb! - YouTube I haven't searched for it, but there was also one...

I just have to share with you my latest treasure. It's not a laser, it's a book. A book about lasers. By the man who made the first one. Not remarkable maybe, but I just found out about this book a couple of weeks ago (it was published 13 years ago) and even though Maiman has been one of my...

A fair is a great place to see free (and not so free) entertainment. While strolling around the grounds I came upon a friendly performer who was happy to demonstrate his unique talent with only me for an audience: :crackup: I felt bad that I decided to leave before the second act. Oh well...

Last week I spent a few days camping in eastern Oregon. I was off on my own just outside the woods after dark. I was watching the sky, looking for meteors, when I noticed a white light, like an airplane, slowly moving across the sky. But unlike an airplane, it had no flashing lights. I looked...

I work retail and a few months ago transferred to a store closer to where I live. At my previous store, we NEVER worked overtime (except on very rare occasions, and you weren't obligated). But here, while I really like my new boss, she is a workaholic and seems to think that everyone wants as...

I know about the green ones, I've heard of orange, but yellow? They must not be very common either. If anyone here is interested, here's the link: Laser Chorus Yellow HeNe Laser Tube (Last One) Hard to find! | eBay I'm not planning on bidding on this for several reasons, but I admit I...

Okay, I guess I'm officially bitten by the gas laser bug since I recently got my third HeNe, lol! I saw a nice one on eBay that was similar to one of my others, and it was in good working order (shown in a photo) and was a very good price. But I haven't been able to use yet it because of the...

I have read that gas lasers can become out of alignment. This is something new to me, as I haven't heard of it before. How can you tell if one is? How is it fixed? Also, can other types of lasers, especially diodes, be out of alignment as well?

I have a 1994 and a 1987. Does anyone have any from, say, the 1970s or even the 1960s, that still work just fine? I'd like to hear from anyone who owns a 'vintage' working gas laser! :wave:

OK, this is kinda silly, but... There's this gas station and convenience store sort of across the street from where I live, and I noticed that they were selling some very small (maybe a couple of inches long) cheapie pointers on key chains. These things usually don't work very well or for very...

I have a couple o' cheapie pointers that take button batteries. Generally they use 3 batteries, and looking around at most stores those batteries sell individually for around $3.00. That would be approx. $9.00 to re-fill a pointer that cost only two or three bucks in the first place! It's...

$500 + for a NON-WORKING HeNe? Showa HeNe Laser GLG5414 Not Working AS-IS | eBay I'm not understanding why they would think that it's worth that when it doesn't work. If it was something a little more exotic, like an Argon, or even a green HeNe, then maybe- if it could be fixed. But a plain...

...But I'm just a little tiny bit intimidated to try it out yet. Why? Because of this warning paragraph that came with it: 'CAUTION: Do not touch the ends of HV connector immediately after the laser has been operated. Although the electric charge stored in the laser head begins to decrease...

I saw a high-powered green on an auction site (not eBay) with several bidders. Many of the bidders were leaving messages such as "I hope I win this!" etc. One guy said he really wanted it for his son's 9th birthday. Now, perhaps he is a responsible father who will supervise his kid with it and...

I agonized about getting this because I really don't need it...but it seemed to be reasonable in price and in good working condition, and even included the manual: Hughes 3227H-C Helium-Neon Linear Laser 7-15mW min/max w/ Power Supply & Manual | eBay And the fact that it was made by Hughes and...

I recently got my first HeNe (a little Uniphase Novette) and was wondering if there are any particular rules to follow to proper care for my new pet so it lives a long and fullfilling life. Is it fine being used infrequently? Or should it be regularly turned on? What about the best...

Sorry if this has been discussed elsewhere, but I searched and Googled and still can't find a satisfactory answer, and this question has nagged me for years: If one of the chief characteristics of laser light is its coherence, why then are the beams from diode lasers any less coherent than from...

I've been a lurker on here for quite a while, and was kind of nervous joining because I never see any other women on here. I also feel kind of lost reading some of the posts, because I'm not terribly technical. (I know, roll eyes...typical female, lol!) But I understand the basics of how...