01-11-2021, 12:00 AM | #11 |
Join Date: Feb 2016
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Re: (Spaceships) TL11^ Personal Space Transport
The Death Star is far more terrifying. Raising the temperature to ~200,000 K would only require 1.1×10^27 J. Utterly destroying a planet requires ~220,000 times as much energy (2.4×10^32 J). Anyway, the Death Star used a hypermass annihilator system to power it, which is probably best represented as a Cosmic Antimatter Reactor (or Cosmic Total Conversion Reactor). Either way, it requires ~3 trillion tons of hypermass to be annihilated per full powered blast (good thing that the Death Star was over 80 km in radius and probably massed 300 trillion metric tons [SM+31]).
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01-11-2021, 04:52 AM | #12 | |
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Re: (Spaceships) TL11^ Personal Space Transport
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Also as Matpat's video explains the laser isn't just raising the temperature of the air but are turning it into the fourth state of matter - plasma. We are talking about "twice the temperature of the sun". As the beam is maintained after a while the air would turn the surface to plasma and if done for long enough you would effectively have a very short lived star as all matter of the planet was turned into plasma.
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01-11-2021, 08:12 AM | #13 |
Join Date: Feb 2016
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Re: (Spaceships) TL11^ Personal Space Transport
200,000 K is much hotter than twice the temperature of the surface of the sun, as the sun's surface is only 5,800 K. As for 'baking' to death, you are vaporized in an instant either way, so it does not matter. Heating an entire planetary surface to plasma would require 8.6 × 10^24 J per meter deep of the planetary area that you are converting to plasma (5,800 K), so it is much slower than the Death Star (128 meters per blast after interval after stripping away the atmosphere). At those temperatures, you are also radiating a lot of energy away every second, so you are more creating a planet sized incandescent bulb than a planet sized ball of plasma.
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01-11-2021, 11:04 AM | #14 | |
Join Date: Jun 2013
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Re: (Spaceships) TL11^ Personal Space Transport
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01-11-2021, 11:43 AM | #15 | |
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Location: Sumter, SC
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Re: (Spaceships) TL11^ Personal Space Transport
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Also one must remember the "hidden heat" present in the hange from solid to liquid to gas to plasma. This is why steam at 100 C can be more scalding than water at 100 C; it takes a lot of energy (heat) to change from one form to the other. Energy that doesn't show up on any thermometer. As for radiation goes plasma is ionized radiation (ultraviolet, x-rays, and gamma rays) while heat (inferred) is non ionized radiation. But ionized radiation has more energy then non ionized radiation and per the First Law of Thermodynamics that energy isn't just disappearing. The smallest red dwarfs (less than 0.35 M☉) use convection and as a result are the longest lived main sequence stars with some though to go back to the birth of the universe and will, in all likelihood, be the last type of star in the universe. Of course to do any of this and with Star Wars ships using some form of White Dwarf matter as fuel you re still talking around TL10 easy though not quite TL11.
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