Photography :the begining

I was researching last night and found some interesting information on Photography during the initial stages my notes are below:

- Sir John Herschel in 1839 labelled ' Photography' it was also the year photography came public.

- The word is derived from the Greek words light and written. ( I found it interesting that it was written, as words arent the focal point of photography it is the image , a commuication of an idea/theme etc. So I researched more and found that it wasnt the word written instead it wa drawing. So a drawing with light? I will need to do some more research to confirm this. )

- Imaginary tale: A prediction made by De La Roche (1729-1774) working on Graphantie. ( Surprisingly I couldnt find what this method or medium actually was). The tale was that it was possible to capture an image using a sticky substance on canvas. Apparently it would create a mirror image when dired in the dark would stick to the canvas. " The author would not have known how prophetic this talke would be, only a few decades after his death."

- There are two specific processes that make photography possible: Optical and Chemical.

- At the begining of the nineteenth centry Thomas Wedgewood was conducting experiments , sucessfully captured images, but they could not survive. There was no known method of making the image permanet.

- The first succesful picture was produced in June/July 1827 by Niepce by using a mterial that hardened on exposure to light. But took an exposure of eight hours.