Siren

Paris Deleuil

Everybody knows the siren because of alarm exercises. In such device air is pressed through the holes in a fast rotating disc. The air vibrations thus formed cause the characteristic, penetrating tone. In 1819 the apparatus was devised by Charles Cagniard de Latour (1777-1859), who called the device a ‘siren’. He was looking for a device which could show a connection between the pitch and the frequency (the number of air vibrations per second). The rotational speed of the disc can be read from a counter. The frequency can be calculated by means of a stopwatch. The produced tone sounds louder at high speeds because of the air driving. The apparatus was made by the French instrument maker Deleuil.

Administration name

Fysisch Kabinet

Title

Siren

Translated title

Siren

Creator

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Object number

FK 0243

Reproduction reference

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