 As no atmosphere is free from dust, and that of cities is particularly dusty, these mineral constituents must be regarded as possible reagents in cases where there is evidence that very minute quantities of basic substances can initiate chemical reactions...  The American Journal of Science - Pagina 3271911Volledige weergave - Over dit boek
 | Royal Society (Great Britain) - 1911 - 694 pagina’s
...manganese is volatilised by one spark discharge, and yields a spectrum with the following ultimate group of lines : 2949'3, 29394, and 2933-1. As no atmosphere...solution in contact with air is liable to be affected. On the Absolute Measurement of Light: A Proposal for an Ultimate Light Standard. By RA HOUSTOUN, MA,... | |
 | Henry Woodward - 1911 - 656 pagina’s
...to eliminate the air spectrum and the short metallic lines. Thirteen minerals were recognized, and " as no atmosphere is free from dust, and that of cities...solution in contact with air is liable to be affected". 5. PALAEONTOLOGY AT SHEPHERDS BOSH. — In the Museums Journal for May Dr. Bather describes and comments... | |
 | Henry Woodward - 1911 - 654 pagina’s
...atmosphere is free from dust, and that of cities is particularly dusty, these mineral constituents roust be regarded as possible reagents in cases where there...solution in contact with air is liable to be affected". 5. PALEONTOLOGY AT SHKPHERDS BUSH. — In the Muteum» Journal for May Dr. Bather describes and comments... | |
 | 1913 - 176 pagina’s
...finest particles. As no atmosphere is free from dust, and city air is particularly dusty, the various mineral constituents must be regarded as possible...basic substances can initiate chemical reactions. •Hartley, WN & Ramage, Hugh. Mineral constituents of dust and soot from various sources. 1901. (In... | |
 | United States. National Bureau of Standards, United States. Bureau of Standards - 1923 - 906 pagina’s
...overhead cables of tramcars which must yield a copper dust of extreme tenuity. It was pointed out that "as no atmosphere is free from dust, and that of cities...solution in contact with air is liable to be affected." WASHINGTON, April 7, 1922. * Proc. Roy. Sac., 85A, p. 371; 1910-11. •• • DEPARTMENT OF COMMERCE... | |
 | Royal Society (Great Britain) - 1911 - 674 pagina’s
...manganese is volatilised by one spark discharge, and yields a spectrum with the following ultimate group of lines : 2949'3, 29394, and 2933-1. As no atmosphere...solution in contact with air is liable to be affected. On the Absolute Measurement of Light: A Proposal for an Ultimate Light Standard. By KA HOUSTOUN, MA,... | |
 | 1912 - 470 pagina’s
...finest particles. As no atmosphere is free from dust, and city air is particularly dusty, the various mineral constituents must be regarded as possible...basic substances can initiate chemical reactions. •Hartley, WN & Ramage, Hugh. Mineral constituents of dust and soot from various sources. 1901. (In... | |
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