MAJOR INVENTIONS AND INVENTORS — MILESTONES IN SCIENCE AND TECHNOLOGY

PRERNA FOR IAS

         Mehnat Aapki, Guidance Humari

         Roz ki Prelims Practice — Experts ke Saath

MAJOR INVENTIONS AND INVENTORS — MILESTONES IN SCIENCE AND TECHNOLOGY

1. Importance of Inventions

• Human progress has been shaped by inventions that transformed communication, transport, industry, education, healthcare and everyday life.
• Many famous inventions were not the work of a single person; they developed through successive experiments, improvements and competing technologies.
• Therefore, examination answers should distinguish between the first idea, the first patent and the first practical commercial version.

2. Electric Incandescent Lamp — Thomas Alva Edison

• Thomas Alva Edison is associated with development of the first commercially practical incandescent lighting system in 1879.
• Electric lamps existed before Edison, but his team developed a durable lamp together with generators, wiring and distribution equipment needed for practical use. (National Park Service)
• Edison publicly demonstrated his lighting system at Menlo Park on 31 December 1879.
• He eventually received 1,093 U.S. patents, covering several fields. (Smithsonian Institution)

3. Telephone — Alexander Graham Bell

• Alexander Graham Bell is conventionally credited with patenting the practical telephone in 1876.
• The invention converted variations in sound into electrical signals and transmitted them over wires.
• Telephone technology revolutionised personal, commercial and governmental communication and later developed into mobile and digital telecommunications.

4. Radio Communication — Marconi and Other Pioneers

• Guglielmo Marconi developed practical wireless telegraphy during the 1890s and demonstrated increasingly long-distance radio communication.
• However, radio emerged from earlier scientific work by James Clerk Maxwell, Heinrich Hertz, Jagadish Chandra Bose, Nikola Tesla and others.
• Therefore, describing Marconi simply as the sole “inventor of radio” oversimplifies its technological history.

5. Aeroplane — Wright Brothers

• Wilbur and Orville Wright achieved the first successful controlled, sustained flight of a powered, heavier-than-air aircraft on 17 December 1903 at Kitty Hawk, North Carolina.
• Orville’s first flight lasted 12 seconds and covered about 120 feet. (SIRIS)
• Their achievement depended on experiments with gliders, aerodynamics, propulsion and flight control.