Grenartia wrote:Valgora wrote:
I saw something that said a laser killed a test drown in 15 seconds 2 years and 4 days ago (Sep. 9, 2015).
I doubt that a laser could go from 15 seconds to a few milliseconds in 2 years.
And, electromagnetic railguns would probably be ineffective against ballistic missiles.
You are correct, reducing the destruction time by several orders of magnitude is highly unlikely in only 2 years.
As for railguns vs ballistic missiles, assuming your targeting systems are accurate (which, for the US, they would be), and the aforementioned rail-erosion problem could be overcome, they actually would be pretty good.
I was about to say something about the range of a railgun v. being able to shoot a missile.
However, according to the internet, space starts at 100 km. And the US's railgun has a range of 160 km with plans to make it reach 360 km. However, I don't think that accounts for the most likely probability that the US hasn't tested the railgun by shooting up.