Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 1, 2025
Running his finger along the eleventh, horizontal series, he, continued: "The gold series not the group reads gold, mercury, thallium, lead, bismuth, and other elements known only to myself. For the known elements, however, these groups and series are now perfectly recognised by all scientists; they are determined by the fixed weight of the atom, and there is a close approximation to regularity.
They sank into death as into sudden sleep, and examination revealed no physical effects whatever. The wire is an alloy, and the constituent metals have not yet been determined; but it is not an amalgam, for mercury is absent. The wire contains thallium and helium as the spectroscope shows; but its awful radioactivity and deadly emanation has yet to be explained.
Why is it that living fish add nothing to the "weight of the bucket of water in which they swim?" Charles II. is said to have asked the Royal Society. A still more extraordinary question has been propounded in the grave pages of the Quarterly Journal of Science, edited by Mr. Crookes, a Fellow of the Royal Society, and the discoverer of the useful metal thallium.
Indeed, the silver bands have wonderfully degenerated since the bit of thallium was put in, and for a reason worth knowing. It is the resistance offered to the passage of the electric current from carbon to carbon, that calls forth the power of the current to produce heat.
It may be a volcanic eruption, or a lake of fire such as the crater of Kilauea. Really, I can't say. Let me see if I can identify the bright lines of the spectrum." I yielded the spectroscope to him, and scarcely had he looked into it ere he cried out "By all that's wonderful, the spectrum has changed. Eureka! It's thallium now. I should know that splendid green line amongst a thousand."
The author prepares the thallium paper a few days before use, by dipping strips of Swedish filtering paper in a solution of thallous hydrate, and drying. For use the strips are hung in the free air in a close vessel, preferably over caustic lime, for twelve hours. Other papers are used, made with a two per cent. solution. These are exposed for thirty-six hours.
The coloration is determined by comparison with a scale having eleven degrees of intensity upon it. Compared with Schoenbein's ozonometer, the results are in general directly opposite. The thallium papers show that the greatest effect is in the daytime, the iodide papers that it is at night. Yearly curves show that the former generally indicate a rise when the latter give a fall.
Paramagnetic Diamagnetic Iron Bismuth Nickel Phosphorus Cobalt Antimony Aluminium Zinc Manganese Mercury Chromium Lead Cerium Silver Titanium Copper Platinum Water Many ores and Alcohol salts of the Tellurium above metals Selenium Oxygen Sulphur Thallium Hydrogen Air We have theories of magnetism that reduce it to a phenomenon of electricity, though we are ignorant of the real nature of both.
The iodide curve follows closely that of relative humidity, clouds, and rain; the thallium curve stands in no relation to it. A table of results for the year 1879 is given in monthly means, of the two thallium papers, the ozonometer, the relative humidity, cloudiness, rain, and velocity of wind. G. F. B., in Ber. Berl. Chem. Ces.
However impossible it is to distinguish the one colour from the other, it is equally impossible to confound the spectrum of incandescent silver-vapour with that of thallium. In the case of silver, we have two green bands instead of one. If we add to the silver in our camera a bit of thallium, we shall obtain the light of both metals.
Word Of The Day
Others Looking