Comparative illuminating effects of coal gas, spermaceti, and colza oil. English (American) and French standards of measurement of light
✍ Scribed by Robt. Briggs
- Publisher
- Elsevier Science
- Year
- 1878
- Tongue
- English
- Weight
- 150 KB
- Volume
- 105
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
Briggs--Gaslight Engineering. 415 duces a turbidity with a solution of silver nitrate. The receiver is then changed, and the acid is distilled over down to a small residue.
For many technical purposes it is requisite to have nitric acid free from chlorine, whilst the other impurities, when present in small quantity, have no prejudicial effect. Som~ establishments, for this purpose, wash the Chili nitre with pure water--or, better still, with a saturated solution of nitre free from chlorine--until all the common salt is removed. Others prefer to remove the chlorine after the acid is prepared, which is easily effected by heating the acid in stoneware pans in a water-bath, and simultaneously forcing a current of air through it by means of an air-pump. The escaping hyponitric acid containing chlorine is conducted into a coke-tower. In this manner the nitric acid is obtained as clear as water, and free from chlorine and hyponitric acid.
[To be continued.
GASLIGHT ENGINEERING. i COMPARATIVE ILLUMINATING EFFECTS OF COAL GAS, SPERMACETI, AND COLZA OIL. ENGLISH (AMERICAN) AND FRENCH STANDARDS OF MEASUREMENT OF LIGIIT.