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Author Topic: Laser cannon power thread  (Read 129 times)

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Laser cannon power thread
« on: December 25, 2020, 09:51:45 pm »
« Last Edit: January 11, 2022, 08:38:18 pm by Dutch »
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Trade Federation core ship hit by lasers
« Reply #1 on: December 25, 2020, 10:03:22 pm »

By comparison:
A 100-150W laser is capable of cutting metal sheets.[1][2] Since these cut through far more, they're probably at least 1500W.
Rating: 5/10

By calculation:
If each beam vaporizes 100 cm2 of iron (787.3g), then their output is around 6.007099 megawatts.[3]
Rating: 8/10


[1]:
Laser Cutting Thickness Guide on Laser Power, Lens and Table Size
We have compiled this guide for the laser system that we sell, which gives you a good idea of all kinds of materials that a laser can mark, engrave, drill and cut from the commercially available op...
am.co.za

[2]:
Epilog Support Center
Access expert support for your Epilog Laser system. Find troubleshooting guides, maintenance procedures, software downloads, and contact information all in one place at the Epilog Support Center.
Epilog Support Center · support.epiloglaser.com

[3]:
Star Wars vs Star Trek: Asteroid Destruction Calculator
stardestroyer.net
« Last Edit: March 04, 2021, 03:52:15 pm by Dutch »
Logged
"If we came from monkeys, why are there still monkeys?"
—Classmate

"Sure I believe in global warming. The earth warms every summer!"
—Another classmate

"THE EVOLUTION THEORY IS THE STUPIDEST THING I HAVE EVR HEARD OF!!!!!"
—Email to Talk.Orgins.Org

"The Joke Is On You ONEists,
I have SuperNatural Wisdom.
NO God mentality can Know my 4 Day Cube.
No Bible Word equals my TimeCubed Earth."
—Gene Ray

"Poor kids are just as bright and just as talented as white kids."
—Joe Biden

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DIY laser shotgun
« Reply #2 on: December 30, 2020, 08:14:04 pm »


According to one source, [1] about 50 milliwatts are required to pop balloons with a laser. If we assume that that power will pop a balloon in 1 second, then, since the laser in the gif pops each one in about 0.4 seconds (or less), then the minimum wattage of the laser is 125mW (0.125W).

If 20mW are needed: the laser has a power of 50mW.
100mW: 250mW
200mW: 0.5W
Rating: 6/10

(The actual wattage is 40W.) [2][3]



[1]:
What mw is required to burn paper? Pop balloons? Light match? Any specific laser?
Im completely new to laser pointers and have no idea where to look or what to do. But.... What mw for a green laser is required to burn a piece of paper? Light a match? Pop balloons? Any lasers yo...
Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers · laserpointerforums.com

[2]:
A Youtuber Built a Laser Gun That Can Set Copper On Fire
This death ray is 50,000 times more powerful than the legal limit—and just as blinding as you’d expect.
Popular Mechanics · popularmechanics.com

[3]:
A 40-Watt Laser Shotgun. Really.
There’s no practical reason why a 40-watt laser shotgun should exist.
Popular Science · popsci.com
« Last Edit: January 07, 2022, 01:52:50 pm by Dutch »
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"If we came from monkeys, why are there still monkeys?"
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—Another classmate

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—Email to Talk.Orgins.Org

"The Joke Is On You ONEists,
I have SuperNatural Wisdom.
NO God mentality can Know my 4 Day Cube.
No Bible Word equals my TimeCubed Earth."
—Gene Ray

"Poor kids are just as bright and just as talented as white kids."
—Joe Biden

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Dune trailer lasguns
« Reply #3 on: January 07, 2022, 02:00:04 pm »


(Happens around 2:17.)


By melting
Assuming that all the energy comes from the lasers (which seems quite reasonable), then the blast probably has a minimum energy sufficient to melt at least 100g of iron.

Melt energy of iron = roughly 1.28 MJ/kg (1.28 kJ/g)

1.28 x 100 = 128kJ


By KE
The largest chunks are about, conservatively, five inches (0.127 m) across. The density of iron is roughly 7870 kg/m^3, so each one has a mass of ~16 kg. I'll guess that's one-quarter of the total mass flung away, and the average velocity is about 0.3 m/s, so...

(1/2)(m)(v^2) = 0.5 x 64 x 0.3^2 = 2.88J

This is clearly a minimum.
« Last Edit: January 12, 2022, 06:47:11 pm by Dutch »
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"If we came from monkeys, why are there still monkeys?"
—Classmate

"Sure I believe in global warming. The earth warms every summer!"
—Another classmate

"THE EVOLUTION THEORY IS THE STUPIDEST THING I HAVE EVR HEARD OF!!!!!"
—Email to Talk.Orgins.Org

"The Joke Is On You ONEists,
I have SuperNatural Wisdom.
NO God mentality can Know my 4 Day Cube.
No Bible Word equals my TimeCubed Earth."
—Gene Ray

"Poor kids are just as bright and just as talented as white kids."
—Joe Biden
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