this post was submitted on 22 Jun 2024
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NonCredibleDefense

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[–] [email protected] 113 points 4 months ago (4 children)

Laser tanks are impractical. What if the enemy wears mirrored shades? That laser goes right back and kills you instead. You don't want your 100 million dollar tank to be taken out by a pair of Ray-Bans.

[–] [email protected] 93 points 4 months ago (5 children)

We can put shades on the tank to bounce it right back

[–] [email protected] 107 points 4 months ago (1 children)
[–] [email protected] 26 points 4 months ago (1 children)

Classic,but inappropriate. Tanks should not wear aviators, but big chunky goggle style Warby Parkers on sale $1.89

[–] [email protected] 39 points 4 months ago* (last edited 4 months ago) (1 children)
[–] [email protected] 14 points 4 months ago

Str8 outta Fort Sill, Oklahoma BITCHEZ

[–] [email protected] 66 points 4 months ago* (last edited 4 months ago) (2 children)

WAR… is.. disco?

Next your gonna tell me the raving rabbits are the ones driving them.

[–] [email protected] 20 points 4 months ago

I guess war does change.

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[–] [email protected] 21 points 4 months ago* (last edited 4 months ago) (2 children)

https://www.military.com/daily-news/2024/04/24/army-has-officially-deployed-laser-weapons-overseas-combat-enemy-drones.html

The Army has officially deployed a pair of high-energy lasers overseas to blast incoming enemy drones out of the sky, the service recently confirmed, marking a major milestone for the U.S. military's ongoing development of futuristic directed-energy weapons.

The 20-kilowatt Palletized High Energy Laser, or P-HEL, "is currently deployed to support the Army's mission" in an undisclosed location abroad, a spokesman for the service's Rapid Capabilities and Critical Technologies Office, which manages its directed-energy portfolio, told Military.com.

I think the bigger concern is enemy UAVs wearing shades.

[–] [email protected] 11 points 4 months ago (2 children)

Yay for undisclosed location! Slava Ukraini!

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[–] [email protected] 19 points 4 months ago (2 children)
[–] [email protected] 14 points 4 months ago

I HATE THIS SO MUCH

and its soo awesome

[–] [email protected] 7 points 4 months ago

This is why I never open someone else's makeup bag.

[–] [email protected] 9 points 4 months ago

Doesn't that cause a nuclear explosion?

[–] [email protected] 12 points 4 months ago

That's when you go back to explosives, you don't even need shrapnel anymore, they are already wearing it!

[–] [email protected] 5 points 4 months ago

The moment those mirrors stop being perfectly shiny they begin thermal collapse. Which is the real reason mirrors exposed to the atmosphere can't be used as targeting optics.

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[–] [email protected] 86 points 4 months ago (1 children)
[–] [email protected] 4 points 4 months ago (1 children)

The US military has in the past used some large vehicle mounted beam weapons that make your skin burn like all hell, such as the Active Denial System, and I wonder if those could be deflected as well or if they're the part of the spectrum that needs more sophisticated shielding?

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[–] [email protected] 40 points 4 months ago (3 children)

I only we had something we could fire that do almost the same arc as that. That would be ballin'! So I'd call it ballistics

[–] [email protected] 27 points 4 months ago (1 children)

Ridiculous! You would basically need the mass of a planet for that to work.

[–] [email protected] 17 points 4 months ago (1 children)

Dangit! We won't find that anywhere on Earth!

[–] [email protected] 10 points 4 months ago

You fools. Look up!

It's not a "moonshot," it's a 360 no-scope.

[–] [email protected] 7 points 4 months ago

Aiming such a thing would be more than an art.....

[–] [email protected] 5 points 4 months ago

That would work if the earth wasn't flat. As it is, you need to transport the artillery below their position and shoot them from there. Like Ender shooting through the ice clouds.

[–] [email protected] 32 points 4 months ago (1 children)

the tank is confused by its own reflection and attempts to fight itself

[–] [email protected] 5 points 4 months ago

This is why certain Army weapons are not appropriate for the Marines

[–] [email protected] 31 points 4 months ago (1 children)

Sigh.

Because good lasers are red.

[–] [email protected] 35 points 4 months ago (1 children)

...the color of a blaster bolt (character-scale or starship scale) is determined by the quality of the gas used in it - higher quality gives you green, lower quality gives you red. The Rebellion didn't have access to the highest quality gas, and had to make do with the lower quality ammunition.

Huh, I guess I wondered but never looked it up until now.

[–] [email protected] 10 points 4 months ago

I mean, that's how it was retconned, but it was originally just so viewers could tell if it was the good guys or bad guys shooting. Just like there were only supposed to be blue (good guys) and red (bad guys) lightsabers. As the Star Wars universe and lore expanded, things got retconned and added/changed/removed, and it's still happening with the new stuff that comes out. Isn't world-shaping neat?

[–] [email protected] 27 points 4 months ago (5 children)

If you fire a laser against a mirror, it bounces but raises the heat of the mirror so you end up melting the mirror and destroying the drone.

[–] [email protected] 25 points 4 months ago

I may risk being too credible here, but a $80 drone is a lot more expendable than a $40m laser tank. The drone can be considered a consumable. Hell, mark the drones down as ammo.

[–] [email protected] 22 points 4 months ago* (last edited 4 months ago)
[–] [email protected] 10 points 4 months ago

Depending on how long you do it, how powerful the laser, and how quickly it can cool off at the same time.

And like the other guy said, you can make really good mirrors if you only care about one wavelength.

[–] [email protected] 9 points 4 months ago (1 children)

But the drone stays in the air by making wind, which would cool down the mirror?

[–] [email protected] 4 points 4 months ago* (last edited 4 months ago) (2 children)

Unironically yes. If that's not enough, add water.

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[–] [email protected] 5 points 4 months ago (1 children)

not if you have total internal reflection

[–] [email protected] 8 points 4 months ago (3 children)

In all seriousness, wavelength-specific dielectric mirrors can approach six nines of reflectivity.

The hard part is hitting the mirror instead of the drone.

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[–] [email protected] 17 points 4 months ago* (last edited 4 months ago) (4 children)

Mirrors melt and break when hit with a laser of more than "pretty lights power".
This dude built a 2kW one with optics: https://www.youtube.com/watch?v=xNmbvaUzC8Q
mirror at ~ 4:30

EDIT: I know where I am, that video is too good not to share though. Vote away.

[–] [email protected] 7 points 4 months ago (1 children)

I rarely give my time to videos that long, but it was awesome for the full half hour. That guy's having fun. Thanks for sharing.

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[–] [email protected] 6 points 4 months ago (3 children)

Nah. This doesn't count because that guy is clearly from the future when you can buy a 1K laser at the corner store. In 2024, they are a little bit harder to come by.

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[–] [email protected] 13 points 4 months ago

We don't need Sky Ranger, mirrorbois or lasertank, we have shitballoons.

[–] [email protected] 13 points 4 months ago (1 children)
[–] [email protected] 4 points 4 months ago

Queen of battle! Yasss

[–] [email protected] 13 points 4 months ago (1 children)

Buddy called inverse-square law

[–] [email protected] 20 points 4 months ago (1 children)

Inverse square law is just a geometric limitation, focus your lasers more, problem solved.

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[–] [email protected] 12 points 4 months ago

This is also how you check if your ass is clean.

[–] [email protected] 9 points 4 months ago (1 children)

This was a real concept for the anti-ICMB 747. The idea was to loiter it outside air defense range and then send drones in as reflectors to target the lasers much closer to the threat.

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[–] [email protected] 7 points 4 months ago (1 children)

Alternately, polish every car window facing east.

Or... skip a step. Line of sight is irrelevant if your aircraft is already exploding!

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[–] [email protected] 7 points 4 months ago

I actually do this with my TV infrared remote control.

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