- EAN13
- 9782386260087
- Éditeur
- EHS
- Date de publication
- 18/02/2024
- Langue
- anglais
- Fiches UNIMARC
- S'identifier
Livre numérique
-
Aide EAN13 : 9782386260087
- Fichier EPUB, avec Marquage en filigrane
3.99 -
This book deals with the works of Graham Bell and other scientists on the
phenomena of sound and its production.
“In bringing before you some discoveries made by Mr. Sumner Tainter and
myself, which, having resulted in the construction of apparatus for the
production and reproduction of sound by means of light, it is necessary to
explain the state of knowledge which formed the starting-point of our
experiments. I shall first describe the remarkable substance selenium, and the
manipulations devised by various experimenters; but the final result of our
researches has extended the class of substances sensitive to light-vibrations,
until we can propound the fact of such sensitiveness being a general property
of all matter.”
ABOUT THE AUTHOR
Alexander Graham Bell (1847–1922) was a Scottish-born inventor, scientist,
teacher of the deaf, and innovator who is best known for inventing the
telephone.
phenomena of sound and its production.
“In bringing before you some discoveries made by Mr. Sumner Tainter and
myself, which, having resulted in the construction of apparatus for the
production and reproduction of sound by means of light, it is necessary to
explain the state of knowledge which formed the starting-point of our
experiments. I shall first describe the remarkable substance selenium, and the
manipulations devised by various experimenters; but the final result of our
researches has extended the class of substances sensitive to light-vibrations,
until we can propound the fact of such sensitiveness being a general property
of all matter.”
ABOUT THE AUTHOR
Alexander Graham Bell (1847–1922) was a Scottish-born inventor, scientist,
teacher of the deaf, and innovator who is best known for inventing the
telephone.
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