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And for more info: InfoComm International, the Audiovisual (AV) Association - Do Lasers Mean a New Age for Projection Technology?

I've noticed that OdicForce doesn't offer 1W handhelds anymore (the highest power available right now is a 1W labby), while Blord hasn't posted anything for over a month, not even to let laserdonkey know if he's alive. This could be a coincidence, but it could also mean that laser laws in the EU...

What do you mean by "lock it down"? I have a Dominator, and the focus seems pretty stable to me. While the 1W laser I had bought from OdicForce has a focus ring that wobbles around, leading to sudden defocussing as I touch it and cause it to tilt, this does not happen with my Dominator. If this...

That's what I did too. Not only about lasers, but also about Tesla coils, cyclotrons (I wanted to build a particle gun) and rocket engines (I also wanted to build a jetpack). Of course, as soon as I could make calculations about power and weight, I realized why there are no particle guns and...

Ha ha! I did exactly the same thing once, including saving the plans to a floppy disk, except that I did it in 1998 (were floppy disks still around in 2005? :-P ) and the plans were not for a ruby laser, but for a 1W gas laser. I still remember they suggested to use a salt window for the beam...

Check out the article I've found: Build your own LASER! | Modern Mechanix It appears that the November 1964 issue of Popular Science had an article that taught people how to build a ruby laser. I wonder if anyone reading this forum was already around back then to attempt such a build (or...

Yeah, it doesn't seem to be written in the style of someone who actually got hurt. It sounds too goofy. In particular, that "ahhh" at the end of the title reminds me of the "Castle of Aaaargh" from Monty Python and the Holy Grail.

I have already explained why, in this post.

Where does Optimus Prime go when he needs to take a dump? To the ener-john.

Here's what I do: - If I am using a laser or I am in the same room with someone using a laser, I use goggles. - Otherwise, I don't. :p My view on lasers and safety goggles is summarized by this post.

And you fell for it? How long have you lurked this board before buying the laser? I'm betting some time between a week and nothing, or else you would've realized the seller was lying. If you're too lazy to read past messages, I'll try to explain it here, using the simplest words I can: because...

It's more than a gut feel, considering that when you gamble online, the same entity that generates the outcomes is also your opponent. It's like being the defendant at a trial where the same person is the judge, prosecutor, jury and executioner.

You are assuming that a gambling site is run by a program that simulates the laws of probability correctly. Why, exactly? If you see FlutterPie's losing streak and you want to place a bet about his future performance, would you choose to bet that: a) "he would win or lose according to strict...

One of the science-fiction novels I read as a kid was "2001: A Space Odyssey". As I read that for the first time, I could see in my mind the astonishing imagery of the inside of Jupiter being filmed by a probe, of the moons of Saturn, of the TMA-2 monolith on the surface of Iapetus, of the Grand...

Emulation has been one of my steady passions since 1997. I've actually used an emulator for the first time in 1993 (it was a Spectrum emulator running on Amiga hardware), but it was when I got my first Internet connection in 1997 that I started following the emulation scene constantly. The first...

Yes, the 65 in the title is not a typo: there is such a thing as a Commodore 65, and I have just released the fourth version of Hi65, my high-level Commodore 65 emulator. That machine has fascinated me since I got aware of its existence (that was about in 2002), and for years I have waited for...

That's why I wrote "a material particle": to exclude the photon. I understand that completely, it does feel good when you really "grok" a theory, as opposed to merelyreciting it because it's written in a book. Just don't suggest a high school physics book, or you risk to make him hate physics...

No. A material particle can never reach the speed of light. But as it approaches the speed of light, its mass increases. How much it increases, it depends on its speed. If you want to know how much it increases, there is a calculator here. Try inputting different velocities, and you will notice...

For a theory[1] to be valid, it is required to have predictive power. That means that a valid theory must have the power to mathematically predict phenomena before their actual discovery. Relativity satisfies this criterion, here are some phenomena it predicted: 1) the mass increase of...

Lurk moar.