Émile Sarrau
Encyclopedia
Jacques Rose Ferdinand Émile Sarrau (Perpignan
Perpignan
-Sport:Perpignan is a rugby stronghold: their rugby union side, USA Perpignan, is a regular competitor in the Heineken Cup and seven times champion of the Top 14 , while their rugby league side plays in the engage Super League under the name Catalans Dragons.-Culture:Since 2004, every year in the...

 24 June 1837 – Saint-Yrieix 10 May 1904) was a French chemist
Chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

. He worked most of his career at the laboratory in the Dépôt Central des Poudres et Salpêtres (Central Depot for Powder and Saltpetre). He did research on explosive shock wave
Shock wave
A shock wave is a type of propagating disturbance. Like an ordinary wave, it carries energy and can propagate through a medium or in some cases in the absence of a material medium, through a field such as the electromagnetic field...

s, the effects of explosives and he developed new explosives. The Mach number
Mach number
Mach number is the speed of an object moving through air, or any other fluid substance, divided by the speed of sound as it is in that substance for its particular physical conditions, including those of temperature and pressure...

 was sometimes called in French the Nombre de Sarrau (Sarrau number).

Further reading

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