HISTORY OF HORN
THE VERY FIRST NATURE'S HORN
The outer part of the ear comprises an asymmetrical horn design.
It decreases in diameter gradually towards the eardrum, amplifying the pressure of sound by 20 times.
HEBREW SHOFAR - The horn-trumpet instrument of God.
The Lord said to Moses "Make two instruments out of hammered silver, and use them for calling the community"
EPIDAURUS THEATRE
The Epidaurus theatre, which was built in 4th century B.C. is famous for its excellent acoustics.
The sound produced on stage rises clearly and sweetly to the audience, due to the horn shaped architecture of the theatre's 55 rows.
VITAPHONE SPEAKER
Horn used in Vitaphone speaker, by Ernst Siemens, in 1874.
Ernst Siemens applied for German patent, for a non magnetic diaphragm as the sound radiator of a moving coil transducer
The diaphragm could take the form of a cone, with an exponentially flaring "morning glory" trumpet form.
TYNDALL'S RADAR
Tyndall's giant, atmospheric acoustic radar in 1875
By using a fog horn, the listener receives echoes from atmospheric features in the horizon
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BERLINER'S GRAMOPHONE
In 1888 Emil Berliner presented his horn gramophone to the public.
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