alb9024928

Illustration showing a Mance Heliograph in British India.

Illustration showing a Mance Heliograph, a wireless solar telegraph that signals by flashes of sunlight (generally using Morse code) reflected by a mirror. Henry Christopher Mance (1840-1926), of the British Government Persian Gulf Telegraph Department, developed the first widely accepted heliograph about 1869 in British India. 1880.
Compartir
pinterestPinterest
twitterTwitter
facebookFacebook
emailEmail

Añadir a otro lightbox

Añadir a otro lightbox

add to lightbox print share
¿Ya tienes cuenta? Iniciar sesión
¿No tienes cuenta? Regístrate
Compra esta imagen. Selecciona el uso:
Cargando...
Título: Illustration showing a Mance Heliograph in British India.
Descripción: Ver traducción automática
Illustration showing a Mance Heliograph, a wireless solar telegraph that signals by flashes of sunlight (generally using Morse code) reflected by a mirror. Henry Christopher Mance (1840-1926), of the British Government Persian Gulf Telegraph Department, developed the first widely accepted heliograph about 1869 in British India. 1880
Crédito: Album / World History Archive
Autorizaciones: ? Cesión de modelo: No - ? Cesión de propiedad: No
¿Preguntas relacionadas con los derechos?
Tamaño imagen: 4591 × 4568 px | 60.0 MB
Tamaño impresión: 38.9 × 38.7 cm | 1807.5 × 1798.4 in (300 dpi)