Alkaline Batteries: Batteries that don't corrode easily and can last for a long time.

Dictating Machine: A machine that could record your voice.

Edison Laboratory: Now a national monument, located in West Orange, New Jersey.

Edison Universal Stock Printer: A telegraph machine that converted electrical messages into letters.

Electric Lighting System: Edison didn't just invent the light bulb! He developed a whole system of generators, wires, lamps, and switches to power and operate the bulbs.

Electrical Vote Recorder: A machine that quickly counts votes.

Electricity: Invisible energy which moves through wires at 186,000 miles per second.

Illuminate: To light up.

Incandescent Light Bulb: A light bulb that glows hot and gives off light when electricity flows through the filament.

Laboratory: A place where scientists and inventors do experiments.

Mimeograph: A machine that makes copies of documents by pressing ink onto paper through holes cut into a stencil.

Patent: A way to protect inventions from being built and sold by other people.
Phonograph: Early record player which used a needle to play wax records.
Telegraph: A machine that sends signals over an electrical wire.