A crossbow that fires rebar. AND: Superheating the rebar.
In Half-Life 2, my favorite weapon happens to be what looks like a homemade crossbow
that fires rebars heated by a lantern battery. Obviously this is pretty farfetched, but would a crossbow that fires the smallest rebar (Imperial #3 at .376
) be all that farfetched?
Bolts weighing 10.5 grains per inch are mentioned on this page
. This comes out to .0015 pounds per inch, with the rebar being .031333... pounds per inch.
The rebars in the game are longer than six inches by far, but for the purposes of this question assume that the crossbow would be firing six inch rebar.
I'm guessing a lantern battery isn't enough power to heat up rebar enough that it glows (as it does in the game). My knowledge of electricity is somewhat limited, so I must ask: How much Wattage/Amperage/Voltage would it take to heat up some rebar to that point? Assume six inches again.