The best modern engines show, by the indicator cards, between 60 and 90 per cent of the theoretical effect of the steam ; in all cases the figures vary in proportion as care is exercised'in ...

E is a rotary engine, constructed on the plan ... S is the the pressure of steam required to produce these effects will only range from 40 to 60 pounds per 'quare inch. A working pressure of ...

The effect was less impressive however ... We’d love to see the same experiment done with a piston-type steam engine, too. Video after the break.

The impact of the steam engine. videoThe impact of the steam engine A description of the social and economic effects of the steam engines developed by Newcomen and Watt at the start of the ...