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.
Double or single ovens. What do you need? Single ovens are a great choice if space is tight, if you tend to cook for one or two or don't cook much for pleasure. Single ovens are about 60cm tall and can be slotted under-counter or at eye-level. Remember, though, you won't be able to cook and use the grill at the same time. Double ovens offer more versatility and are good for families. Electric cookers, where the main oven is fan or multi-function, have a smaller, traditional second oven. Make sure you can fit some of your popular weekday cookware in it; some second ovens tend to be very shallow.