Man And Machines
- Episode aired Dec 5, 1968
The Greek inventor, Alexander Hero, first defined five basic devices which make all machines possible: lever, wedge, wheel, pulley and screw.The Greek inventor, Alexander Hero, first defined five basic devices which make all machines possible: lever, wedge, wheel, pulley and screw.The Greek inventor, Alexander Hero, first defined five basic devices which make all machines possible: lever, wedge, wheel, pulley and screw.