Chemical News and Journal of Industrial Science, Τόμοι 7-8Chemical news office, 1863 |
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
action alcohol alkaline ammonia analysis anhydrous aniline apparatus appears application arsenic acid baryta boiling carbonate of soda carbonic acid cent chemical chemistry chemists chloride coal colour compound containing copper crucible crystallised crystals cubic centimetres decomposed decomposition dilute dissolved distillation dry arsenic acid effect employed evaporated experiments extract filtered grammes heat hydrate hydrochloric acid hydrogen Improvements iodide iridium iron light lime liquid London magnesium manufacture manure matter means melted metal method mineral mixed mixture nitrate nitric acid nitrogen observed obtained ordinary oxide oxygen paper patent peat platinum portion potash potassium powder precipitate prepared present prism produced Professor pure purpose pyrites rays reaction residue rhodium ROYAL INSTITUTION-Albemarle Street rubidium ruthenium salt scientific separated silver small quantity soap Society sodium soluble solution spectrum steel substances sulphate sulphide sulphuric acid temperature thallium tion torbanite tube vapour washed weight zinc
Δημοφιλή αποσπάσματα
Σελίδα 301 - WHEREAS it is expedient that Persons requiring Medical Aid should be enabled to distinguish qualified from unqualified Practitioners...
Σελίδα 102 - First, by showing that the plates of salt when subjected to the strictest examination show no trace of a film of moisture. Secondly, by abolishing the plates of salt altogether, and obtaining the same results in a cylinder open at both ends. It was next surmised that the effect was due to the impurity of the London air ; and the suspended carbon- particles were pointed to as the cause of the opacity to radiant heat. This objection was met by bringing air from Hyde Park, Uampstead Heath, Primrose...
Σελίδα 301 - Every person registered under this Act shall be entitled according to his qualification or qualifications to practise Medicine or Surgery, or Medicine and Surgery, as the case may be, in any part of her Majesty's dominions, and to demand and recover in any court of law, with full costs of suit, reasonable charges for professional aid, advice, and visits, and the cost of any medicines or other medical or surgical appliances rendered...
Σελίδα 102 - ... hang like suspended grains. This finer atmosphere unites, not only atom with atom, but star with star ; and the light of all suns, and of all stars, is, in reality, a kind of music propagated through this interstellar air. This image must be clearly seized, and then we have to advanc
Σελίδα 103 - ... the air through which the calorific rays passed was polished within, and the rays which struck the interior surface were reflected from it to the thermo-electric pile which measured the radiation. The following objection was raised : — You permit moist air to enter your cylinder ; a portion of this moisture is condensed as a liquid film upon the interior surface of your tube ; its reflective power is thereby diminished ; less heat therefore reaches the pile, and you incorrectly ascribe to the...
Σελίδα 36 - ... a penalty not exceeding five pounds for every day during which such default continues...
Σελίδα 103 - Make it 10, 15, 20, 25, 30 inches : you obtain an absorption exactly proportional to the quantity of vapour present. It is next to a physical impossibility that this could be the case if the effect were due to condensation. But lest a doubt should linger in the mind, not only were the plates of rock-salt abolished, but the cylinder itself was dispensed with. Humid air was displaced by dry, and dry air by humid in the free atmosphere ; the absorption of the aqueous vapour was here manifest, as in...
Σελίδα 36 - ... and in contravention of his orders, then the inspector shall proceed against the person whom he believes to be the actual offender in the first instance, without first proceeding against the occupier of the factory or workshop.
Σελίδα 103 - The warmth of our fields and gardens would pour itself unrequited into space, and the sun -would rise upon an island held fast in the iron grip of frost. The aqueous vapour constitutes a local dam, by which, the temperature at the earth's surface is deepened: the dam, however, finally overflows, and we give to space all that we receive from the sun.
Σελίδα 43 - ... radiation the gases are sensibly transparent. An extension of this reasoning enables us at once to conclude, that the sum of the absorptions of the two chambers taken separately must always be greater than the absorption effected by a single column of the gas of a length equal to the sum of the two chambers. This conclusion is illustrated in a striking manner by the experiments ; and it is further found that when the mean of the sums of the absorptions is divided by the absorption of the sum,...