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1
The Basics of Chemistry
An invention that facilitated the study of gases was the pneumatic trough (Figure
3.1). Stephen Hales (1677-1761) perfected this device in his studies of animal
and plant physiology. Hales' trough was nothing more than a gun barrel bent and
...
... the use of a pneumatic trough for collecting gas samples over water should be
familiar. Figure 7.4 illustrates a pneumatic trough with a bottle full of water
submersed. The gas from the chemical reaction bubbles into the bottle,
displacing the ...
3
The Historical Background of Chemistry
In the course of this work he perfected the pneumatic trough to collect over water
the gases that were formed. He probably obtained most of the common gases
during his studies, but he did not realize that they differed chemically. To him they
...
Henry Marshall Leicester, 1971
4
Instruments and Experimentation in the History of Chemistry
This technical obstacle was suddenly overcome in 1728, when Stephen Hales
invented the device later called the pneumatic trough. The introduction of this
apparatus into chemical laboratories later in the century enabled chemists to
handle ...
Frederic Lawrence Holmes, Trevor Harvey Levere, 2000
Pneumatic Trough for experiments on small quantities of gases in glass tubes. —
Figure 131 represents an earthenware pan about two inches deep and twelve
inches in diameter. In the centre is a loose bee-hive shelf, figure 1 30, also of ...
John Joseph Griffin, 1860
6
The Chemistry of the Non-metallic Elements and Their ...
Pneumatic Trough for experiments on small quantities of gases in glass tubes. —
Figure 131 represents an earthenware pan about two inches deep and twelve
inches in diameter. In the centre is a loose bee-hive shelf, figure 1 30, also of ...
John Joseph Griffin, 1860
7
Principles and Applications of Chemistry: For the Use of ...
Another and more elegant arrangement, constructed of glass, and suitable for a
lecture table, is represented by Fig. 87. The vessel intended for the reception of
gas is filled with water, inverted and placed upon the shelf of the pneumatic
trough ...
8
Elements of Chemistry: Chemical physics
PNEUMATIC TROUGH— GAS-HOLDEB. 47 Fig. 19. cupping, because the
atmospheric pressure is partially removed over the wounds inflicted by the
lancets. (38) Pneumatic Trough. — Among the many useful contrivances
depending on the ...
William Allen Miller, 1872
48 PRESSURE OF THE AIR PNEUMATIC TROUGH. sensible ; and if a piece of
bladder be moistened and securely tied over the opening and then left to dry, its
surface will, when a portion of the enclosed air is removed, become very tense ...
William Allen Miller, 1860
10
The Practical Pyromaniac: Build Fire Tornadoes, ...
The pneumatic trough is one of those boring sounding, yet incredibly important
scientific discoveries that provided an avenue for understanding a great deal of
things that aren't boring at all. The trough, it seems, played a key role in building ...
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Teacher sacked for putting a student in a head lock despite being …
The experiment involved Mr Krix lighting petrol in a "science pneumatic trough" in an outdoor area. But the teacher left the students alone at ... «The Daily Telegraph, 1月 14»
