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.
For large cakes, always check for doneness after they have baked for 1 hour. For pans 11 inches and larger, we recommend using a heating core to insure even baking. See also Baking Pan Substitutions Chart . Use this chart as a guide when baking wedding cake tiers. Batter amounts for the 3-inch deep cakes on the chart are for pans 1/2 full of batter. An average 2-layer cake mix yields 4 to 5 1/2 cups of batter. Icing amounts are very general and will vary with consistency, thickness applied and tips used. These amounts allow for top and bottom borders. Serving amounts are based on wedding-sized portions of approximately 1 x 2 x 4 in. Other cake sizes: 1.5x2x4 (party size serving); 2x2x2 (standard sheet cake serving) NOTE: Cakes from 3 to 6 in. high, baked in the same size pan, would yield the same number of servings because they follow the same pattern of cutting.