27 October 2012


The invention:

A device that detects soundwaves transmitted
through water, sonar was originally developed to detect enemy
submarines but is also used in navigation, fish location, and
ocean mapping.

The people behind the invention:

Jacques Curie (1855-1941), a French physicist
Pierre Curie (1859-1906), a French physicist
Paul Langévin (1872-1946), a French physicist

21 October 2012

Solar thermal engine

The invention:
The first commercially practical plant for generating
electricity from solar energy.

The people behind the invention:

Frank Shuman (1862-1918), an American inventor
John Ericsson (1803-1889), an American engineer
Augustin Mouchout (1825-1911), a French physics professor