Heliograph

A heliograph (Greek: ß╝ş╬╗╬╣╬┐¤é helios, meaning "sun", and ╬│¤ü╬▒¤ć╬Á╬╣╬Ż graphein, meaning "write") is a wireless solar telegraph that signals by flashes of sunlight (generally using Morse code) reflected by a mirror. The flashes are produced by momentarily pivoting the mirror, or by interrupting the beam with a shutter. The heliograph was a simple but effective instrument for instantaneous optical communication over long distances during the late 19th and early 20th century. Its main uses were military, survey and forest protection work. Heliographs were standard issue in the British and Australian armies until the 1960s, and were used by the Pakistani army as late as 1975. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video

TARGET AD 2
2014/11/17 Audiopedia   Share on Facebook

RELATED VIDEOS

Heliotrope aimer for Operation On-Target
Play Video

Heliotrope aimer for Operation On-Target

2015/09/20
Mance Mark V Heliograph Flyaround (Simplex Mode)
Play Video

Mance Mark V Heliograph Flyaround (Simplex Mode)

2013/08/18
VMARS Heliograph Demonstration 2
Play Video

VMARS Heliograph Demonstration 2

2010/11/02
1826 The First Photograph
Play Video

1826 The First Photograph

2009/03/25
Heliograph (432 Hz) ~ Chris Zabriskie
Play Video

Heliograph (432 Hz) ~ Chris Zabriskie

2016/03/22
How to Use a Signal Mirror
Play Video

How to Use a Signal Mirror

2011/11/19
Heliograph
Play Video

Heliograph

2011/06/10
Heliograph: Mance Mark V
Play Video

Heliograph: Mance Mark V

2012/01/29
The Flat Earth : The Heliograph/Signal Mirror Proves A Flat Earth 125 miles
Play Video

The Flat Earth : The Heliograph/Signal Mirror Proves A Flat Earth 125 miles

2016/07/15
Nic├ęphore Ni├ępce and the First Photograph from Nature   YouTube
Play Video

Nic├ęphore Ni├ępce and the First Photograph from Nature YouTube

2014/01/01
Heliograph
Play Video

Heliograph

2010/12/02
Survival Kit must, Rescue Flash Signal Mirror with retro-reflective mil-spec aimer
Play Video

Survival Kit must, Rescue Flash Signal Mirror with retro-reflective mil-spec aimer

2010/08/16
Heliograph: Mance Mark V HD
Play Video

Heliograph: Mance Mark V HD

2014/01/22
heliograph.wmv
Play Video

heliograph.wmv

2012/05/17
World War One Telephones Begbie Lamps Heliographs: World War One Signals Part 1:British Empire
Play Video

World War One Telephones Begbie Lamps Heliographs: World War One Signals Part 1:British Empire

2016/03/19
The Daguerreotype - Photographic Processes Series - Chapter 2 of 12
Play Video

The Daguerreotype - Photographic Processes Series - Chapter 2 of 12

2014/10/01
Heliograph
Play Video

Heliograph

2013/03/03
Learn Morse Code Easily
Play Video

Learn Morse Code Easily

2010/11/19
THE FIRST PHOTOGRAPH
Play Video

THE FIRST PHOTOGRAPH

2016/12/06
Heliograph Sun light communication device used between Settlements 1930-40s
Play Video

Heliograph Sun light communication device used between Settlements 1930-40s

2014/04/06
Heliograph Mk V Sun Signaling Mirror
Play Video

Heliograph Mk V Sun Signaling Mirror

2011/06/23
The First Photographer: The Photographs of Nic├ęphore Ni├ępce
Play Video

The First Photographer: The Photographs of Nic├ęphore Ni├ępce

2013/11/05
Heliography: Using the Sun to make Art
Play Video

Heliography: Using the Sun to make Art

2013/06/07
Fast Solar Solar Wind & First Sunspot of a New Cycle: Storm Forecast 01-20-17
Play Video

Fast Solar Solar Wind & First Sunspot of a New Cycle: Storm Forecast 01-20-17

2017/01/20
Powered by YouTube

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.