alb5405983

Alexander Graham Bell, Telephone System,1877

Diagram of Bell's telephone system that appeared in the Illustrated London News, 1877. Alexander Graham Bell is commonly credited as the inventor of the first practical telephone. He was the first to obtain a patent, in 1876, for an "apparatus for transmitting vocal or other sounds telegraphically", after experimenting with many primitive sound transmitters and receivers. Bell's telephone transmitter (microphone) consisted of a single permanently magnetized bar magnet having a small coil or bobbin of fine wire surrounding one pole, in front of which a thin disc of iron was fixed in a circular mouthpiece. The disc served as a combined diaphragm and armature. On speaking into the mouthpiece, the iron diaphragm vibrated with the voice in the magnetic field of the bar-magnet pole, and thereby caused undulatory currents in the coil. These currents, after traveling through the wire to the distant receiver, were received in an identical apparatus. This design was patented by Bell on January 30, 1877.

Compartir
Pinterest
Twitter
Facebook
Copiar enlace
Email

Añadir a otro lightbox

¿Ya tienes cuenta? Iniciar sesión

¿No tienes cuenta? Regístrate

Compra esta imagen. Selecciona el uso:

Título: Alexander Graham Bell, Telephone System,1877

Descripción: Ver traducción automática
Diagram of Bell's telephone system that appeared in the Illustrated London News, 1877. Alexander Graham Bell is commonly credited as the inventor of the first practical telephone. He was the first to obtain a patent, in 1876, for an "apparatus for transmitting vocal or other sounds telegraphically", after experimenting with many primitive sound transmitters and receivers. Bell's telephone transmitter (microphone) consisted of a single permanently magnetized bar magnet having a small coil or bobbin of fine wire surrounding one pole, in front of which a thin disc of iron was fixed in a circular mouthpiece. The disc served as a combined diaphragm and armature. On speaking into the mouthpiece, the iron diaphragm vibrated with the voice in the magnetic field of the bar-magnet pole, and thereby caused undulatory currents in the coil. These currents, after traveling through the wire to the distant receiver, were received in an identical apparatus. This design was patented by Bell on January 30, 1877.

Crédito: Album / Science Source

Autorizaciones: ? Cesión de modelo: No - ? Cesión de propiedad: No
¿Preguntas relacionadas con los derechos?

Tamaño imagen: 3887 × 3123 px | 34.7 MB

Tamaño impresión: 32.9 × 26.4 cm | 1530.3 × 1229.5 in (300 dpi)

Palabras clave: 1877 • AMERICA • ARTE • AVANCÉ • BLANCO Y NEGRO • CAMPANA • CHARLAR • CIENCIA • COMUNICACION • CONVERSACION • CONVERSANDO • CONVERSAR • DISCUSION • ESCOCÉS • ESTADOS UNIDOS DE AMERICA • FAMOSA • FAMOSO • FAMOSOS • HABLANDO • HABLAR • HISTORIA • ILUSTRACION • ILUSTRACIONES • INGENIERO • INVENCION • INVENTOR • LOGOPEDA • MAYOR • PIONERO • SIGLO XIX • TALKING • TECNOLOGÍA • TRANSMISION