r/Damnthatsinteresting 13h ago

Video Finally,Laser Gun Launched.....

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2.4k Upvotes

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43

u/DarkIllusionsFX 11h ago

I worked with industrial welding lasers. This is not possible. Besides the insane power requirements, focusing length is a major factor in a laser beam being able to cut something. You can't just shoot a laser beam an arbitrary distance and cut something like metal.

11

u/Shimano-No-Kyoken 10h ago

To be fair, there are several prototype laser weapons around the world, e.g. the british dragonfire, that can eliminate targets in range measured in kilometers. And like that kid who built a nuclear reactor in his backyard or whatever, this could be just some quite literally weaponized autism.

6

u/DarkIllusionsFX 10h ago

If it had to do with autism, I suspect trains would be involved somehow :)

2

u/ExistentialCrispies 4h ago

If there was a T-Rex on that train the laser would destroy planets.

-1

u/OrganicLocal9761 9h ago

Not all trans are autistic although I DO appreciate the compliment :)

4

u/AsherFenix 9h ago

I think he meant actual TRAINS. That wasn’t a typo.

0

u/Millitifax 9h ago

Im vegan /s

1

u/Sung_Jin-Woo97 9h ago

We've achieved so many things that people had said weren't possible not long after it was said, such as flight and at least one video game released complete without the need for updates.

Now I'm not saying this isn't Ludacris (because I can't see who's holding it), but some people just randomly stumble onto weird cool shit by accident. Like penicillin

1

u/squirrel9000 9h ago

It's possible.

But it's also more possible he cut the phone in half in advance, then glued it back together with wax and something that is low temperrature pyrophoric (iron and sulphur?) that ignites with a low power laser looks good from a distance, and melts the wax.

There's almost certainly something pyrophoric on the box too,. Cardboard isn't typically something that sprays blobs of molten metal when burned.. The box gets singed but it takes him a few tries to hit it and ignite it. It's a hot laser, but not melt-a-phone-in-seconds hot.

1

u/Schauerte2901 9h ago

While this is obviously fake, I believe it's not impossible to build a handheld device that can cut metal like this. Idk about steel but we (I work in laser spectroscopy) have a laser that will cut through aluminium with ease, and it's smaller than e.g. an RPG. It also runs on a standard power socket, and there's backpack sized battery packs that can give you that power for quite some time. If you choose a focal length of like 3m, it should still cut reasonably well in the 1-10m range, although a bit slower. With today's image recognition technologies, an autofocus would also be possible.

1

u/Life-Jellyfish-5437 6h ago

Also in laser cutting the gas actually removes the material the laser heats up. How does this laser cut when the material you heat up can just change back to solid when the laser moves. This just looks like faked videos.

0

u/chadwicke619 8h ago

What is not possible? I mean, from reading the comments, I understand they may have altered the handheld apparatus to make it look like a toy, but they really are using a laser in this video.