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.
Stove/Oven Height. When it comes to height, there are some variations. Average heights for a stove/oven combo are either 37.25 inches or 47 inches, depending on the manufacturer. The most common height of 36 inches accommodate standard counter heights.
Decide what type of microwave oven you want. Countertop models are the most conventional kind of microwave. They range in size from 18 inches wide and 11 inches high (45.7 cm wide and 27.9 cm high) to 24 inches wide and 14 inches high (61 cm wide to 35.6 cm high).