A prize for a new electric lamp for miners

• Publisher: Elsevier Science
• Year: 1911
• Tongue: English
• Weight: 66 KB
• Volume: 172
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(11)90269-5

✦ Synopsis

289

large electrodes. With a tube 6 metres long, fitted with electrodes presenting a surface corresponding to 5 square dcm. per ampere, ~a period of incandescence of 400 hours was attained.