Oil burning on the surface of the seawater

Materials cannot be extinguished with water if they are less dense than water itself

Petroleum

Petroleum is a dark brown coloured liquid, which has a lower density than water.

János Irinyi (1817-1895)

Hungarian chemist who invented the non-explosive match.

The Alexander Mosaic (Pompeii, c. 2nd century BC)

The mosaic depicts a scene from the Battle of Issus with the Persian king, Darius III, as the other central figure

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