 | 1842 - 634 pages
...depth in the metal. 9. I placed upon a plate of copper, blue, ed, and orange coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Perry Fairfax Nursey - Industrial arts - 1842 - 632 pages
...depth in the metal. 9. I placed upon a plate of copper, blue, ed, and orange coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Chemistry - 1843 - 714 pages
...depth in the metal. 9.' I placed upon a plate of copper, blue, red, and orange colored glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Meteorology - 1843 - 884 pages
...depth in the metal. 9. I placed upon a plate of copper, bine, red, and orange colored glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Robert Hunt - Physics - 1851 - 502 pages
...the impressed plate. I placed upon a plate of copper, blue, red, and orange-coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper : these were allowed J to remain in contact for half an hour. The space occupied by the red glass,... | |
 | Encyclopaedia - 1851 - 276 pages
...depth in the metal. 9. I placed upon a plate of copper, blue, red, and orange coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Robert Hunt - Daguerreotype - 1852 - 324 pages
...depth in the metal. 9. I placed upon a plate of copper, blue, red, and orange coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Robert Hunt - Calotype - 1852 - 380 pages
...depth in the metal. 9. I placed upon a plate of copper, blue, red, and orangecoloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Robert Hunt - Photochemistry - 1854 - 466 pages
...following arrangements. I placed upon a plate of copper, blue, red, and orange coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well... | |
 | Leopold Gmelin - 1861 - 608 pages
...more strikingly shown by the following arrangements. — Pieces of blue, red, and orang'c-colourcd glass, also of crown and flint glass, mica, and a...well made out, and a remarkably strong impression was left where the crown glass rested on the tracing paper, but the mica had not left any impression.... | |
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I placed upon a plate of copper, blue, red, and orange coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well marked, that... 
