Biogas power plant

Biogas can be produced from organic material (manure, plant waste, organic waste) using...

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...

Transformer

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

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...

Types of stars

This animation demonstrates the process of star development for average and massive stars.

USS Missouri (US, 1944)

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

Hubble Space Telescope

The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.

How does it work? - LCD screens

A liquid-crystal display utilises the light modulating properties of liquid crystals.

Nitrous acid (HNO₂)

One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that...

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