this post was submitted on 16 Jan 2024
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Like, the worked example from Atomic Rockets has 7 kilograms of cat litter moving at 90% of lightspeed hitting a stationary target with 195 megatons of kinetic energy.
https://www.projectrho.com/public_html/rocket/spacegunexotic.php
But yeah this is the ultimate doomsday weapon. You can accelerate indefinitely for free, you just have to wait.
(and if you can put your portals in orbit of a more massive object, you get faster acceleration than 1g)
So you don't need more than a portal gun, a tungsten rod, and some time to blow the atmosphere off a planet.
Sir Isaac Newton may be the deadliest son of a bitch in space, but the deadliest son of a bitch in the Half Life universe is Cave Johnson.
@[email protected]
I think this is predicated on the assumption that a portal acts as if it's anchored the same way a bell is to a rocket engine.
I don't think it is. Does anything in the games show a portal imparting thrust onto the wall/object it's mounted on? I don't think so. I think portals can't be used for thrust.
It's also pretty clear to me that transfer through a portal is instantaneous, not limited to lightspeed. You can hang out/change direction halfway through a portal as much as you want.