Ivan Meštrović: History of the Croats

One of the Croatian sculptor's most famous works depicts a woman wearing a traditional...

Stirling engine - hot-air engine

Stirling engines are also known as external combustion engines. Unlike internal...

Otto Lilienthal’s glider

The German engineer Otto Lilienthal was the first person to make successful flights with...

Transformer

A transformer is a device used for converting the voltage of electric current.

Optical isomerism

Mirror image isomers of asymmetrical shapes and solids are non-superimposable.

Diversity of light-detecting organs

Several analogous types of eyes have developed independently through convergent evolution.

Phonograph and gramophone

Edison´s invention records and plays sound from a cylinder, while Berliner´s apparatus...

Japanese soldier (World War II)

Highly committed Japanese soldiers fought primarily at the Asian and Pacific theatres of...

Mitsubishi A6M Zero (Japan, 1940)

The Japanese Mitsubishi A6M, commonly known as 'Zero' to the Allies, was a legendary...

Pollution

Pollution is the negative effect of human activity on the natural environment.

USS Missouri (US, 1944)

The battleship USS Missouri, first deployed during WWII was also deployed in the Gulf War.

Hexagonal metallic lattice

Metals forming hexagonal metallic lattices are rigid and difficult to machine.

Cinema (USA, 1930s)

Cinemas were built in large numbers in big cities of the US in the 1910s.

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