 | 1866 - 924 pages
...directed attention in a discourse given on the evening of Friday, the 20th, at the Royal Institution. The instruments made use of were the electric lamp of Duboscq and the liuear thermoelectric pile of Melloni. The spectrum was formed by means of lenses and prisms of pure... | |
 | 1865 - 372 pages
...heat in its spectrum he directed attention in a recent discourse given before the Royal Institution. The instruments made use of were the electric lamp...pile of Melloni. The spectrum was formed by means of leoses and prisms of pure rock-salt. It was equal in width to the length of the row of elements forming... | |
 | 1865 - 388 pages
...heat in its spectrum he directed attention in a recent discourse given before the Royal Institution. The instruments made use of were the electric lamp of Duboscq and the linear thermo-electric pile of Melloui. The spectrum was formed by means of lenses and prisms of pure rock-salt. It was equal in width... | |
 | 1866 - 374 pages
...heat in its spectrum he directed attention in a recent discourse given before the Royal Institution. The instruments made use of were the electric lamp...the latter being caused to pass through its various colors in succession, and also to search the space right and left of the visible spectrum, the heat... | |
 | 1866 - 368 pages
...heat in its spectrum he directed attention in a recent discourse given before the Itoyal Institution. The instruments made use of were the electric lamp...of elements forming the pile, and the latter being tused to pass through its various colors m succession, and also to search the space right and left... | |
 | 1867 - 844 pages
...Friday, the 20th, at the Royal Institution. The instruments made use of were the electric lamp of Dubosq and the linear thermo-electric pile of Melloni. The...length of the row of elements forming the pile, and the "atter being caused to pass through its various ;olors in succession, and also to search the space... | |
 | John Henry Pepper - 1869 - 722 pages
...rays, rendered them also visible. The instruments he used, to quote his own words,* " consisted of the electric lamp of Duboscq and the linear thermo-electric...spectrum was formed by means of lenses and prisms of rock-salt; it was equal in width to the length of the row of elements forming the pile; and the latter... | |
 | 1865 - 372 pages
...heat in its spectrum he directed attention in a recent discourse given before the lioyal Institution. The instruments made use of were the electric lamp...the latter being caused to pass through its various colors in succession, and also to search the space right and left of the visible spectrum, the heat... | |
 | John Henry Pepper - 1877 - 764 pages
...rays, rendered them also visible. The instruments he used, to quote his own words,* " consisted of the electric lamp of Duboscq and the linear thermo-electric...spectrum was formed by means of lenses and prisms of rock-salt ; it was equal in width to the length of the row of elements forming the pile; and the latter... | |
 | Royal Institution of Great Britain - 1866 - 742 pages
...of the electric light ; and to the distribution of heat in its spectrum he now directed attention. The instruments made use of were the electric lamp of Duboscq and the linear thermo-electric pile of Mtlloni. The spectrum was formed by means of lenses and prisms of pure rock-salt. It was equal in width... | |
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The instruments made use of were the electric lamp of Duboscq and the linear thermo-electric pile of Melloni. The spectrum was formed by means of lenses and prisms of pure rock-salt. It was equal in width to the length of the row of elements forming the... 