is it true that thomas edison stole the light bulb idea from nikola tesla? if not why do so many people think so?
There is no concrete evidence to support the claim. While it is a common belief, the reality is that many inventors and innovators were working on similar devices at the time. While Edison played a significant role in the commercialization of the light bulb, he built on the work of many other inventors who had been working on similar devices for decades. Edison was indeed the first person to develop a practical and commercially viable light bulb.

The idea that Edison stole Tesla's idea may have been popularized by various myths and rumours that have been circulating for over a century. People may believe this because Tesla is often associated with electricity and innovation, and because he had some disagreements with Edison in the past. However, Tesla and Edison were not bitter enemies as some people may believe. While they did have some differences and disagreements, they also had a certain degree of respect for each other.
Considering the information you have given me, how accurate was Doctor who's depiction of Nikola Tesla's and Thomas Edison's relationship as portrayed in the episode Nikola Tesla's Night of Terror?
The episode Nikola Tesla's Night of Terror depicts Nikola Tesla's and Thomas Edison's relationship in a somewhat accurate manner, but it takes some creative liberties for dramatic purposes. While the two inventors did have a professional rivalry, their relationship was not as antagonistic as portrayed in the episode.

In reality, Tesla and Edison did have different approaches to inventing, with Tesla focusing on more theoretical and scientific concepts while Edison was more focused on practical applications. However, they did work together briefly in the 1880s when Tesla was employed by Edison's company, and they did have mutual respect for each other's work.

The episode also portrays Edison as being solely focused on profit and stealing Tesla's ideas, which is not entirely accurate. While Edison was known for his business acumen and could be ruthless in protecting his patents, he also had a genuine interest in science and invention.

Overall, while the episode takes some liberties with historical accuracy, it does capture the essence of the professional rivalry between Tesla and Edison, and the struggle for recognition and success in the world of invention.