Analysis of information sources in references of the Wikipedia article "Daguerreotype" in English language version.
... But the first person to use this property to produce a photographic image (stencils of letters without the use of a camera) was German physicist Johann Heinrich Schulze. In 1727, Schulze made a paste of silver nitrate and chalk, placed the mixture in a glass bottle and wrapped the bottle in ...
In a letter to the editor of The Spectator, Claudet explained that he gave his exposures as in June 10 to 20 seconds; in July, 20 to 40 seconds and in September, 60 to 90 seconds.
On a cloudy day, the exposure was given as three or four minutes
In a letter to the editor of The Spectator, Claudet explains that he has a mirror available, but does not use it normally as it requires an increase in exposure time, but he employs it when a face is asymmetrical, to reproduce the irregularity on the correct side.
The author notes Hawes, of Southworth and Hawes, has "a number of daguerreotypes made recently, for he is one of the few operators who remain loyal to the old process".
The proverbial phrase "mad as a hatter" refers to the strange behavior of poisoned hat makers who used mercury nitrate to soften and shape animal furs. This form of mercury is absorbed through the skin. Similar problems afflicted the early photographers, who used vaporized mercury to create daguerreotypes.
An advertisement for Mr Claudet's Daguerreotype Portrait Rooms, which was published in the Journal of the Society of Arts in December 1852, states that "Mr. Claudet's portraits are taken non-inverted (viz. the right and left side, as in nature), for which, and his other improvements in Photography, the Great Exhibition Council Medal has been awarded to him.
In 1822, Niépce coated a glass plate ... The sunlight passing through ... This first permanent example ... was destroyed ... some years later.
In 1822, Niépce coated a glass plate ... The sunlight passing through ... This first permanent example ... was destroyed ... some years later.
In a letter to the editor of The Spectator, Claudet explained that he gave his exposures as in June 10 to 20 seconds; in July, 20 to 40 seconds and in September, 60 to 90 seconds.
On a cloudy day, the exposure was given as three or four minutes
The proverbial phrase "mad as a hatter" refers to the strange behavior of poisoned hat makers who used mercury nitrate to soften and shape animal furs. This form of mercury is absorbed through the skin. Similar problems afflicted the early photographers, who used vaporized mercury to create daguerreotypes.
An advertisement for Mr Claudet's Daguerreotype Portrait Rooms, which was published in the Journal of the Society of Arts in December 1852, states that "Mr. Claudet's portraits are taken non-inverted (viz. the right and left side, as in nature), for which, and his other improvements in Photography, the Great Exhibition Council Medal has been awarded to him.
In a letter to the editor of The Spectator, Claudet explains that he has a mirror available, but does not use it normally as it requires an increase in exposure time, but he employs it when a face is asymmetrical, to reproduce the irregularity on the correct side.
The author notes Hawes, of Southworth and Hawes, has "a number of daguerreotypes made recently, for he is one of the few operators who remain loyal to the old process".