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An autograph or holograph is a manuscript or document written in its author's or composer's hand.
An autograph is a person's own handwriting or signature. The word autograph comes from Ancient Greek (αὐτός, autós, "self" and γράφω, gráphō, "write"), and can mean more specifically: [1] [2] a manuscript written by the author of its content. [1] [2] In this meaning the term autograph can often be used interchangeably with ...
Scott built several devices with the help of acoustic instrument maker Rudolph Koenig. [6] Unlike Thomas Edison's later invention of 1877, the phonograph, the phonautograph created only visual images of the sound and did not have the ability to play back its recordings. Scott de Martinville's intention was for the device's waves to be read by ...
The phonautograph is the earliest known device for recording sound.Previously, tracings had been obtained of the sound-producing vibratory motions of tuning forks and other objects by physical contact with them, but not of actual sound waves as they propagated through air or other mediums.
An authentic performance was thought impossible: The Musical Times correspondent wrote, "Handel's orchestral instruments were all (excepting the trumpet) of a coarser quality than those at present in use; his harpsichords are gone for ever ... the places in which he performed the 'Messiah' were mere drawing-rooms when compared with the Albert ...
US Treasury Department check signing machine. Operated by J.L. Summers in 1918. An autopen (or signing machine) is a device used for the automatic signing of a signature.. Prominent individuals may be asked to provide their signatures many times a day, such as celebrities receiving requests for autographs, or politicians signing documents and correspondence in their official capacit
The inscription was determined to be a statement of faith in Jesus Christ, written in Latin. The statement shows that the wearer "was clearly a devout Christian, which is absolutely unusual for ...
Stereoautograph Wild A5. The stereoautograph is a complex opto-mechanical measurement instrument for the evaluation of analog or digital photograms.It is based on the stereoscopy effect by using two aero photos or two photograms of the topography or of buildings from different standpoints.