Hygiene of the electric light

✍ Scribed by C.

• Publisher: Elsevier Science
• Year: 1880
• Tongue: English
• Weight: 58 KB
• Volume: 109
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(80)90433-0

✦ Synopsis

Wollaston Prize.--Ti~e London Geological Society has awarded its great Wollaston Inedal to M. Daubr6e, director of the school of mines, fbr his researches upon the artificial constitution of the materials found in aerolites and in the lavas ejected from volcanoes.--Cbrou. Indus,.

C.

Magnetic Rotation by the At~osphere.--In a work which

is not yet completed H. Becquerel has shown how to measure the magnetic rotatory power of cdrtain gases, and especially of the atmo-~phere, at ordinary temperatures and pressures. He finds that the rotatory power of the air, for the yellow rays, may be represented approximately by (i)'090128, the rotatory power of bisulphide of carbon for the D line being taken as the unit.--A~'sn, de Chim. et de Phys. C.