Screw – Simple machines – Physics
A cider press with big wooden screws What is a screw? People always count screws as a separate kind of simple machine. But really screws are just one kind of inclined plane. [...]
17
08, 2017
17
08, 2017
Types of lever – Simple machines – Physics
Types of lever: What kind of lever is a see-saw? Three types of lever All levers fall into one of three types of lever. How can we tell which lever [...]
17
08, 2017
Levers – Simple machines – Physics
Levers: An orangutan child using a stick as a lever What is a lever? A lever is basically just a long stick that you push or pull against a fulcrum [...]
17
08, 2017
Simple machines – Physics
An example of a screw, a wedge, a wheel and axle, and a lever Machines are ways to make it easier to do work. Many plants and animals have evolved natural [...]
23
06, 2017
Wine-making and wine presses – History
Roman slaves treading grapes Wine-making started out pretty simple: you picked the grapes and put them in a big concrete box, and then barefooted people - usually enslaved people - [...]
