Ok,notajoke; what I want to know is ;1) how do those things float, and 2) why are there triggers on the underside, I mean, what are the chances that a sub would ever enter a minefield..
I was telling you about the match stick rocket found it and a couple others check date on cover
I'll send this to my son, he's a chemical engineer.
I can’t believe that they would actually give you detailed instructions on how to build something as dangerous as a Tesla coil.
Ni-cad battery’s 1958?
Any water tight container will float. There probably is some kind of long drawn out explanation as to volume density and blah blah blah but what I don’t understand is if the oil tanks on an oil freighter aren’t broken how could it sink oil lighter than water.
They make boats out of concrete. Very common in Australia
yeah, but they are on the other side of the world, so it needs to be heavy or it will fall off
