JKSSB Written 2024
Answer & Explanation
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Correct Answer:
Option A —
Thomas Edison
While the invention of the light bulb is often attributed solely to Edison, it was actually the result of decades of work by various inventors. Edison is credited because he developed the first commercially practical incandescent light.The Evolution of the Light Bulb
Early Breakthroughs: Long before Edison, inventors like Humphry Davy created the first electric arc lamp in 1802. However, these were too bright and burned out too quickly for home use.
Warren de la Rue (1840): He used a platinum filament in a vacuum tube. It worked well but was far too expensive for the general public.
Joseph Swan (1878): A British physicist who developed a working light bulb using carbonized paper filaments. He and Edison eventually joined forces to form the company "Ediswan."
Thomas Edison's Contribution (1879): Edison’s team at Menlo Park tested thousands of materials for the filament. They eventually succeeded with a carbonized bamboo filament that could burn for over 1,200 hours.
Quick Facts on the Other Options:
Eli Whitney: Known for inventing the Cotton Gin, which revolutionized the cotton industry.
Alister Hardy: A marine biologist known for his work on plankton and the "Aquatic Ape" hypothesis.
Michael Faraday: A pioneer in electromagnetism who discovered electromagnetic induction, which is the principle behind the electric generator.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.