Inventions by Lucie Čmejlová

Zipper L.Č.

votrubcova — 2020-05-15 13:42:13 UTC

Zipper was invented in the late 19 century in the USA and zippers were improved during the years. Till the end of 19 century people used buttons on clothes. Zipper brings together two sides of clothes and it´s very handy and useful invention. We use zippers every day and they are part of our clothes. Japanese company YKK is a wellknown producer of zippers and they produce half of the zipper´s productions.

2020-05-20 14:13:28 UTC

IRON

2020-05-21 10:55:52 UTC

The discovery of the production and use of iron was one of the basic moments of the emergence of contemporary civilization. It has been known to mankind since prehistoric times, but industrial production on a mass scale did not begin until the 18th century. Iron has many uses for the production of most of the basic technical means used by man, made of iron alloys called steel and cast iron. His mark is Fe.

Light bulb

2020-05-22 17:40:34 UTC

Steam engine

2020-06-01 22:56:11 UTC