Question : Who invented Electric bulb? a. Graham Bell b. Wright brother’s c. Thomas Edison d. Newton Answer : Correct Answer is (c). The inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours. Courtesy : http://www.enchantedlearning.com/
Information Technology World is a blog managed and maintained by Milind Audichya. Here you can find latest stuff regarding various areas of current scenarios.