This section treats of the qualitative detection and separation of the metals, and the commoner methods employed in quantitative analysis.
He emphasized that the practical training should include (1) the qualitative and quantitative analysis of mixtures, (2) the preparation of substances according to established methods, (3) original research - a course which has been generally adopted.
Such a determination is qualitative, the constituent being only detected or proved to be present, or quantitative, in which the amount present is ascertained.
Bergman laid the foundations of systematic qualitative analysis, and devised methods by which the metals may be separated into groups according to their behaviour with certain reagents.
The introduction of the blowpipe into dry qualitative analysis by Axel Fredrik Cronstedt marks an important innovation.
His text-books on the subject, of which the Qualitative appeared in 1841, and the Quantitative in 1846, have a world-wide reputation, and have passed through several editions.
Perkin, Qualitative Chemical Analysis, 1905).
We shall here consider the qualitative and quantitative determination of these elements.
Fresenius, Qualitative and Quantitative Analysis, Eng.
Nagaoka and Honda have succeeded in showing that the observed relations between twist and magnetization are in qualitative agreement with an extension of Kirchhoff's theory of magnetostriction.
The elementary use of graphic methods is qualitative rather than quantitative; i.e.
" Every name," says he (chap. 4), " signifies either substance or something quantitative, or qualitative, or relative, or somewhere, or sometimes, or that it is in a position, or in a condition, or active or passive."
- The experimental law of conduction, which forms the basis of the mathematical theory, was established in a qualitative manner by Fourier and the early experimentalists.
As in Gymnosperms and other groups an interesting qualitative change is associated with the process of fertilization.
" I am a man," not " I am equal to a man," or in the qualitative, e.g.
This theory of complementary colours as due to the polarity in the qualitative action of the retina is followed by some criticism of Newton and the seven colours, by an attempt to explain some facts noted by Goethe, and by some reference to the external stimuli which cause colour.
His own speculations led him rather to lay stress on the qualitative aspect of the world.
But it may be doubted whether De Morgan's own system, "horrent with mysterious spiculae," as Hamilton aptly described it, is fitted to exhibit the real analogy between quantitative and qualitative reasoning, which is rather to be sought in the logical works of Boole.
This is Spinoza's theory of the infinitely infinite," the limiting notion of infinity being of a numerical, quantitative series, each term of which is a qualitative determination itself quantitatively little, e.g.