which two inventors worked to improve the light bulb and electricity?
<answer> Nikola Tesla and Thomas Edison. <context> Nikola Tesla would have celebrated his 158th birthday today (July 10). The Serbian-American scientist was a brilliant and eccentric genius whose inventions enabled modern-day power and mass communication systems. His nemesis and former boss, Thomas Edison, was the iconic American inventor of the light bulb, the phonograph and the moving picture.