Thomas A. Edison Papers. Electric Generator. In the fall of 1878, after experiments indicated that existing arc light generators were inefficient for incandescent lighting Edison and his chief assistants, Charles Batchelor and Francis Upton, investigated generator design and the principles of electromagnetism.
Size. The standard width of a residential range is 30 inches, but higher-end ranges can extend to 36 inches and beyond. The oven compartment on a typical range is 5 cubic feet, compared to just over 3 cubic feet in a typical wall oven.
The oven in a standard stove is about 5 cubic feet, although smaller units or standard-size appliances with large storage or warming drawers may have as little as 2 cubic feet. Commercial-style stoves tend to have bigger ovens, up to 6.1 cubic feet, and may feature one large oven with a smaller 2- or 3-cubic-foot oven.