 So on copper coated with mercury, the mercury in such case no doubt readily tarnishing (see section 7, polished surfaces not receiving spectra). Having decided that the effect in question is due neither to light nor heat, to what cause, it may be asked,...  Journal of the Franklin Institute - Page 114by Franklin Institute (Philadelphia, Pa.) - 1849Full view - About this book
 | John Holmes Agnew - 1843 - 612 pages
...So on copper coated with mercury, the mercury in such case no doubt readily tarnishing (see section 7, polished surfaces not receiving spectra). Having...with silver and copper, the more oxidable the better ; 3dly, as the more perfectly the coins are cleaned and dried* the less the effect, and as a dry perspiration... | |
 | 1843 - 602 pages
...So on copper coated with mercury, the mercury in such case no doubt readily tarnishing (see section 7, polished surfaces not receiving spectra). Having...with silver and copper, the more oxidable the better ; 3dly, as the more perfectly the coins are cleaned and dried* the less the effect, and as a dry perspiration... | |
 | John Holmes Agnew, Eliakim Littell - 1843 - 612 pages
...So on copper coated with mercury, the mercury in such case no doubt readily tarnishing (see section 7, polished surfaces not receiving spectra). Having...or enter into chemical combination ; 2ndly, as the piale must be of an oxidable metal, and judging from the experiments with silver and copper, the more... | |
 | Perry Fairfax Nursey - 1843 - 538 pages
...So on copper coated with mercury, the mercury in such case no doubt readily tarnishing (see section 7, Polished surfaces not receiving spectra). Having...tendency to tarnish, or enter into chemical combination ; 2ndlv, As the plate must be of an oxidable тпеЫ, and judging from the experiments with silver... | |
 | 1843 - 536 pages
...So on copper coated with mercury, the mercury in such case no doubt readily tarnishing (see section 7, Polished surfaces not receiving spectra). Having...metal, and judging from the experiments with silver and cupper the more oxidable the better ; ."inlU , As the more perfectly the coins are cleaned and dried*... | |
 | 1843 - 884 pages
...silver and copper plates are well known to tarnish by exposure, to the atmosphere, (the former, perhnps, rather by forming a sulphuret, than an oxide,) but...with silver and copper, the more oxidable the better. 3rdly. As the more perfectly the coins are cleaned and dried,* the less the effect, and as a dry perspiration... | |
 | 1843 - 570 pages
...no doubt readily tarnished (see section 7, Polished surfaces not receiving spectra, anft, p. 226). Having decided that the effect in question is due...may be asked is it to be ascribed ? " Conclusions. — 1st. As brightness of the plate is indispensable, and with brightness must exist an increased tendency... | |
| |
