volume voltameter - определение. Что такое volume voltameter
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Что (кто) такое volume voltameter - определение

APPARATUS FOR ELECTROLYSING WATER
Hofmann Voltameter; Hoffman voltameter; Hoffman Apparatus; Hoffman electrolysis apparatus; Hoffman apparatus; Hoffmann Apparatus
  • Hofmann voltameter

Volume (finance)         
AMOUNT OF A SECURITY TRADED DURING A PERIOD OF TIME
Trading volume; Volume of trade; Trade volume
In capital markets, volume, or trading volume, is the amount (total number) of a security (or a given set of securities, or an entire market) that was traded during a given period of time. In the context of a single stock trading on a stock exchange, the volume is commonly reported as the number of shares that changed hands during a given day.
Volume         
  • Diagram showing how to measure volume using a graduated cylinder with [[fluid dram]] markings, 1926
  • left
QUANTITY OF THREE-DIMENSIONAL SPACE
Volume measure; Volumes or capacities of other orders of magnitude; Volumes; Volumetric; Volume (geometry); Volume (mathematics); Spatial volume; Volume (unit); Volumetry; Volume of a cone; Liquid capacity; Fluid capacity; Cubic length; List of volume formulas
·noun Amount, fullness, quantity, or caliber of voice or tone.
II. Volume ·noun Anything of a rounded or swelling form resembling a roll; a turn; a convolution; a coil.
III. Volume ·noun A roll; a scroll; a written document rolled up for keeping or for use, after the manner of the ancients.
IV. Volume ·noun Dimensions; compass; space occupied, as measured by cubic units, that is, cubic inches, feet, yards, ·etc.; mass; bulk; as, the volume of an elephant's body; a volume of gas.
V. Volume ·noun Hence, a collection of printed sheets bound together, whether containing a single work, or a part of a work, or more than one work; a book; a tome; especially, that part of an extended work which is bound up together in one cover; as, a work in four volumes.
volume         
  • Diagram showing how to measure volume using a graduated cylinder with [[fluid dram]] markings, 1926
  • left
QUANTITY OF THREE-DIMENSIONAL SPACE
Volume measure; Volumes or capacities of other orders of magnitude; Volumes; Volumetric; Volume (geometry); Volume (mathematics); Spatial volume; Volume (unit); Volumetry; Volume of a cone; Liquid capacity; Fluid capacity; Cubic length; List of volume formulas
n.
loudness
1) to amplify; increase, turn up the volume
2) to decrease, turn down the volume
space occupied in three dimensions
3) molecular volume
book
4) a rare volume
5) a companion volume (this work is a companion volume to our first dictionary)
6) (misc.) to speak volumes ('to imply a lot') (a single glance can speak volumes)

Википедия

Hofmann voltameter

A Hofmann voltameter is an apparatus for electrolysing water, invented by August Wilhelm von Hofmann (1818–1892) in 1866. It consists of three joined upright cylinders, usually glass. The inner cylinder is open at the top to allow addition of water which contains a low concentration of a compound such as sulfuric acid to improve conductivity and complete the circuit . A platinum electrode is placed inside the bottom of each of the two side cylinders, connected to the positive and negative terminals of a source of electricity. When current is run through Hofmann's voltameter, gaseous oxygen forms at the anode and gaseous hydrogen at the cathode. Each gas displaces water and collects at the top of the two outer tubes.

The tubes which collect the product gases are usually graduated, so that the volume of gas can be measured.