He made an electric car heater in 1882.
An electric oven is safer, however it can cost more than a gas oven. It's a matter of preference.
An electric double oven and an electric single oven would have about the same capacity. The only difference between the two is that you can cook two things at the same time with different temperatures using the double oven. It may even heat up faster as well.
it take more electricity to bring a cup of water to boiling in an electric oven
electric, but it alot of times depends on the stove quality.
To switch from a gas oven to an electric oven, you'll only need to purchase the oven, close the valve on your gas line, and make sure that you have a proper sized circuit available in your home.
What are some recipes for an electric convection oven?
No. Electric and gas ovens are not compatible.
If the oven has a built in temperature gauge, then you should read that for the correct heat. If it does not, I suggest you buy a thermometer that is made to withstand oven heat and use that to tell when it is hot enough.
Electric ovens have a self-cleaning mode that gas ovens usually don't have, and if they do, they are expensive. Most users prefer electric ovens.
Gas ovens do save more money than electric ovens. But the drawback to a gas oven versus electric is that you do not get even heat exchange with gas as you do with an electric oven.
that depends on what you mean by "better." Solar ovens can operate without any electricity or gas, but then, you cannot use a solar oven at night or on cloudy days. Electric ovens can be set at specific temperatures, which is more difficult to do with solar ovens. Electric ovens cost quite a bit of money, while a solar oven can be made with not much more than a cardboard box and aluminum foil. So it all depends on your circumstances and what you are trying to do.