![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Australian_Heliograph_in_Egyptian_Desert_1940.png/640px-Australian_Heliograph_in_Egyptian_Desert_1940.png&w=640&q=50)
Henry Christopher Mance
From Wikipedia, the free encyclopedia
Sir Henry Christopher Mance, CIE (6 September 1840[1] – 21 April 1926) was a British electrical engineer and a former president of the Institution of Electrical Engineers. He was knighted for developing the heliograph.[2][3]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Australian_Heliograph_in_Egyptian_Desert_1940.png/640px-Australian_Heliograph_in_Egyptian_Desert_1940.png)