Geordie lamp the base so that it gave more light and tried new versions on 4 and 30 November. This was presented to the Literary and Philosophical Society (Lit & Phil) of Newcastle upon Tyne on 5 December 1815. Although controversy arose between Stephenson's design and the Davy lamp (invented by Humphry Davy in the same year), Stephenson's original design worked on significantly different principles from Davy's final design. If the lamp were sealed except for a restricted air ingress (and a suitably sized chimney) then the presence of dangerous amounts of firedamp in the incoming air would (by its combustion) reduce
Eliphalet S. Miner Eliphalet S. Miner Eliphalet S. Miner was a member of the Wisconsin State Assembly and the Wisconsin State Senate. Miner was born on March 20, 1818 in Madison, New York. He settled in what is now Grand Rapids, Wisconsin in 1841 before moving to Necedah, Wisconsin in 1850. There, he went into the lumber business with John T. Kingston. Miner died on February 9, 1890. Miner was a member of the Assembly from 1865 to 1866. In the Senate, he represented the 9th District in 1871 and the 29th District in 1872. Other positions he held include Postmaster of Grand