screw

/Tag: screw
17 08, 2017

Screw – Simple machines – Physics

By |2019-04-24T20:06:22-07:00August 17th, 2017|Physics, What|0 Comments

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. They are such an important kind that we give them their own category. Inclined planes Simple machines All our physics articles Who invented [...]

17 08, 2017

Simple machines – Physics

By |2018-05-31T11:49:24-07:00August 17th, 2017|Physics|0 Comments

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 machines like arm muscles (a kind of lever) or teeth (a kind of wedge) or a bacteria's flagellum (a kind of screw). Many animals also make machines out of [...]

16 08, 2017

C-clamps and screws projects – Physics

By |2019-02-25T21:19:34-07:00August 16th, 2017|Physics|0 Comments

A c-clamp is a kind of screw - this screw project uses one. Observation of screws Get hold of a screw and a manual screwdriver and try screwing the screw into a piece of wood. (Make sure it is a scrap piece of wood.) Watch it as the screw goes in. How does [...]

23 06, 2017

Wine-making and wine presses – History

By |2018-04-20T00:22:01-07:00June 23rd, 2017|Food, West Asia|0 Comments

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 - got into the box and stepped on the grapes over and over until they were all crushed and their juice ran out of [...]