For more details on how to distinguish popular, trade and scholarly journals, see: Popular vs Trade vs Scholarly Journals. See also Evaluation Clues for Articles Taken from the Web.
Edison Temperature Yesterday. Maximum temperature yesterday: 34 Â°F (at 1:51 pm) Minimum temperature yesterday: 25 Â°F (at 6:51 am) Average temperature yesterday: 29 Â°F. High & Low Weather Summary for the Past Weeks
The first successful test was on October 22, 1879; it lasted 40 hours. Edison continued to improve this design and by November 4, 1879, filed for U.S. patent 223,898 (granted on January 27, 1880) for an electric lamp using a carbon filament or strip coiled and connected to platina contact wires.