As the liquid turns to gaseous nitrogen at around -196 C, [The Action Lab] figured that it could be used to propel a simple steam engine at ... causing the water to boil at room temperature.

The up and down motion of the piston in the cylinder is transmitted by the beam to the piston in the water pump ... James Watt's inventions meant that the steam engine became much more economical ...

DOM:'Watt's engines were the first to power ... that's got a little bit of water in it and that water is boiling away and producing lots of steam. DOM:'Fran's an expert, this is not something ...