Science & Technology — Inventions & Inventors
8 categories • 6 topics in each category — 48 learning points covering inventions, inventors, years and purposes.
1
6 Topics
🏠 Everyday Inventions
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Bicycle
Karl von Drais
1817
Personal transportation
2
Refrigerator
Jacob Perkins
1834
Keep food and other items cold
3
Washing Machine
James King
1851
Mechanize clothes washing
4
Safety Razor
King C. Gillette
1901
Provide safer shaving
5
Vacuum Cleaner
Hubert Cecil Booth
1901
Remove dust and dirt
6
Electric Iron
Henry W. Seely
1882
Press and smooth clothes using heat
2
6 Topics
⚡ Electricity & Electronics
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Electric Battery
Alessandro Volta
1800
Produce continuous electric current
2
Electric Motor
Michael Faraday
1821
Convert electrical energy into motion
3
Transistor
Bardeen, Brattain & Shockley
1947
Amplify and switch electronic signals
4
Integrated Circuit
Jack Kilby & Robert Noyce
1958–59
Put many components on one chip
5
LED
Nick Holonyak Jr.
1962
Produce efficient electronic light
6
Microprocessor
Intel engineering team
1971
Perform processing on a single chip
3
6 Topics
🚀 Transport & Space
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Steam Engine
James Watt
1760s
Produce mechanical power from steam
2
Automobile
Karl Benz
1885–86
Enable powered road transportation
3
Airplane
Wright Brothers
1903
Enable controlled powered flight
4
Rocket
Robert H. Goddard
1926
Enable powered rocket flight
5
Communication Satellite
NASA / industry teams
1960s
Relay communication signals
6
Space Shuttle
NASA & industry teams
1981
Reusable spacecraft for human spaceflight
4
6 Topics
📡 Communication
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Telegraph
Samuel Morse
1830s
Send coded messages over distance
2
Telephone
Alexander Graham Bell
1876
Transmit speech over distance
3
Radio
Guglielmo Marconi
1895
Transmit signals wirelessly
4
Television
John Logie Baird
1920s
Transmit moving images and sound
5
World Wide Web
Tim Berners-Lee
1989
Link and share information online
6
Email
Ray Tomlinson
1971
Send electronic messages between computers
5
6 Topics
🔬 Medical & Scientific
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Microscope
Zacharias Janssen
c. 1590
Observe very small objects
2
Stethoscope
René Laennec
1816
Listen to heart and lung sounds
3
X-rays
Wilhelm C. Röntgen
1895
See structures inside the body
4
Penicillin
Alexander Fleming
1928
Treat bacterial infections
5
MRI
Raymond Damadian & teams
1970s
Create detailed images of the body
6
Ultrasound Imaging
Ian Donald & teams
1950s
Create images using sound waves
6
6 Topics
🌐 Digital Technology
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Electronic Computer
ENIAC team
1940s
Perform automated electronic calculations
2
Personal Computer
Multiple pioneers
1970s
Bring computing to individual users
3
Mobile Phone
Martin Cooper
1973
Enable portable wireless communication
4
GPS
U.S. Department of Defense & contributors
1970s
Provide location and navigation
5
Smartphone
IBM Simon team
1994
Combine mobile communication and computing
6
Cloud Computing
Multiple researchers & companies
2000s
Provide computing and storage over networks
7
6 Topics
🌱 Modern & Future Technology
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Solar Cell
Bell Labs team
1954
Convert sunlight into electricity
2
3D Printing
Chuck Hull
1984
Build objects layer by layer
3
Electric Vehicle
Multiple pioneers
19th century–present
Use electric power for transportation
4
Industrial Robot
George Devol
1954
Automate repetitive industrial tasks
5
Drone Technology
Multiple pioneers
20th century–present
Enable remotely controlled or autonomous flight
6
Generative AI
Many researchers
2010s–present
Generate text, images, code and other content
8
6 Topics
🇮🇳 Indian Inventions & Contributions
No.
Invention / Contribution
Inventor / Pioneer
Year
Purpose
1
Zero & Place Value
Indian mathematicians
Ancient–7th century
Enable efficient positional arithmetic
2
Decimal System
Indian mathematicians
Ancient India
Represent numbers using place value
3
Brahmagupta's Mathematics
Brahmagupta
628 CE
Formalize rules involving zero and negative numbers
4
Cataract Surgery Tradition
Sushruta
Ancient India
Develop early surgical treatment for cataracts
5
UPI
NPCI & Indian banking ecosystem
2016
Enable instant interoperable digital payments
6
Mangalyaan
ISRO
2013
Demonstrate interplanetary Mars mission capability