Chemical News and Journal of Physical Science, Tom 104Chemical news office., 1911 |
Z wnętrza książki
Wyniki 1 - 5 z 100
Strona 19
... observed by the authors was formic acid ; it was well known that other oxidisable impurities were often present in commercial acetic acid . Dr. L. F. GUTTMANN stated that in the course of some experimental work on mixtures of acetic ...
... observed by the authors was formic acid ; it was well known that other oxidisable impurities were often present in commercial acetic acid . Dr. L. F. GUTTMANN stated that in the course of some experimental work on mixtures of acetic ...
Strona 21
... observed that phthalylphenyl- hydrazide , when crystallised from any ordinary solvent , separates almost invariably in two modifications different both in crystalline form and in colour . Each modification could be obtained free from ...
... observed that phthalylphenyl- hydrazide , when crystallised from any ordinary solvent , separates almost invariably in two modifications different both in crystalline form and in colour . Each modification could be obtained free from ...
Strona 25
... observed if the blood - corpuscles are allowed to sub- side for a certain time , generally twelve to twenty - four hours , in an ice - safe . The strength of the colour may be measured colorimetrically , so that quantitative results are ...
... observed if the blood - corpuscles are allowed to sub- side for a certain time , generally twelve to twenty - four hours , in an ice - safe . The strength of the colour may be measured colorimetrically , so that quantitative results are ...
Strona 26
... observed reaction extremely small . From this circumstance the occurrence of a maxi- mum is easily understood . In the coagulation of milk by means of rennet , Fuld observed such a maximum at 43 ° C. In reactions of living cells on ...
... observed reaction extremely small . From this circumstance the occurrence of a maxi- mum is easily understood . In the coagulation of milk by means of rennet , Fuld observed such a maximum at 43 ° C. In reactions of living cells on ...
Strona 27
... observed ones . The agreement is quite satisfactory having regard to the magni- tude of the errors of observation . Even acids act as of hemolysins . As is well known , water itself acts as a weak base and acid , and therefore acts as a ...
... observed ones . The agreement is quite satisfactory having regard to the magni- tude of the errors of observation . Even acids act as of hemolysins . As is well known , water itself acts as a weak base and acid , and therefore acts as a ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acetic acid action alcohol alkali ammonia ammonium amount Analysis antimony apparatus application atomic weight B.Sc boiling bromide calcium carbon cent cerium Chem CHEMICAL NEWS Office chemists chloride College colour compounds concentrated containing copper course crucible crystallisation D.Sc determined dilute dissolved distilled Edition electric electrolyte elements erbium ether ethyl experiments Farringdon Street ferrous filtered G. S. Newth gives grms heating hemolysis hydrobromic acid hydrochloric acid hydrogen hydroxide Inorganic iodine iron ketone Laboratory Lectures liquid London Manufacture mercury metal Metallurgy method mixture molecular molecules Newcastle Street nickel nitrate nitric acid nitrogen obtained Organic Chemistry oxalate oxide oxidised paper Physical platinum potassium precipitate prepared present Prof pure quantity reaction reagent residue salt sample Science silver Sir William Crookes sodium soluble solution steel Students substance sulphate sulphide sulphuric acid temperature Text-book theory thulium tion tube vanadium vapour volume W. H. Perkin yttrium ΙΟ
Popularne fragmenty
Strona 135 - FELKIN, HM— Technical Education in a Saxon Town. Published for the City and Guilds of London Institute for the Advancement of Technical Education.
Strona 97 - To give a stronger impulse and a more systematic direction to scientific inquiry, — to promote the intercourse of those who cultivate Science in different parts of the British Empire, with one another and with foreign philosophers, — to obtain ft more general attention to the objects of Science, and a removal of any disadvantages of a public kind which impede its progress.
Strona 219 - Bismuth . . Boron . . . Bromine . . Cadmium Caesium . . Calcium . . Carbon . . Cerium . . Chlorine . . Chromium Cobalt . . Columbium . Copper . . Dysprosium . Erbium...
Strona 104 - I often say that when you can measure what you are speaking about and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind...
Strona 37 - ... from the nature of the human mind, time is necessary for the full comprehension and perfection of great ideas: and that the highest and most wonderful truths, though communicated to the world once for all by inspired teachers could not be comprehended all at once...
Strona 255 - It is impossible by means of inanimate material agency to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects.
Strona 132 - Science (B.Sc.) and Doctor of Science (D.Sc.). Candidates for Degrees in Science, if not graduates (by examination) in Arts in one of the Universities of the United Kingdom or in a Colonial or Foreign University recognised for the purpose by the University Court, must pass a preliminary examination in (i) English ; (2) Latin, Greek, French, or German ; (3) Mathematics; (4) One of ' the languages Latin, Greek, French, German, Italian, not already taken under (2), or Dynamics. In the case of a student...
Strona 99 - After consulting some of the most eminent chemical philosophers in this country, it has been judged most proper to suggest a name founded upon one of its obvious and characteristic properties— its colour, and to call it chlorine or chloric gas. " Should it hereafter be discovered to be compound, and even to contain oxygen, this name can imply no error, and cannot necessarily require a change.
Strona 219 - Rhodium . . Rubidium Ruthenium Samarium . . Scandium . . Selenium . . Silicon Silver Sodium Strontium . . Sulphur . . Tantalum . . Tellurium . . Terbium . . Thallium . . Thorium . . Thulium . . Tin.. Titanium . . Tungsten . . Uranium . . Vanadium . . Xenon Ytterbium Yttrium . . Zinc Zirconium . . Mo Nd Ne Ni N Os O Pd P Pt K Pr Ra Rn Re Rh Rb Ru Sm Sc Se Si Ag Na Sr...