"Filip" <annonym@get2net.dk> wrote in
news:43f75266$0$15781$14726298@news.sunsite.dk:
> Undskyld jeg spørger, men jeg er lidt nysgærrig på hvad det lige er.
> Jeg har fundet en side på nettet
http://www.powerlabs.org/railgun.htm
> men kan ikke lige på løbende fod se hvad princippet er. Kan du evt
> give en kort forklaring af hvordan den virker, og hvad den bruges til.
En anderledes måde at skyde folk... - og du behøver ikke at undskylde :)
Den bedste forklaring jeg har set:
http://en.wikipedia.org/wiki/Railgun
Overview
Railguns utilize an electromagnetic force called the Lorentz force to
propel an electrically conductive projectile that is initially part of the
current path. Sometimes they also use a movable armature connecting the
rails. The current flowing through the rails sets up a magnetic field
between them and through the projectile perpendicularly to the current in
the rail. This results in a mutual repulsion of the rails and the
acceleration of the projectile along them.
The world's first large scale railgun was designed and constructed in the
1970s by John P. Barber, a Ph.D. Scholar from Canada and his advisor
Richard A. Marshall from New Zealand, in the Research School of Physical
Sciences at the Australian National University. The system used the very
large (500MJ of stored energy) Mark Oliphant homopolar generator as its
energy source.
/hilsner
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