Top 20 Greatest Scientists and Their Inventions That Changed the World

Mankind has progressed immensely over the period of time and the great contributions by some men in the field of science have played a key role in this growth and transition. These great scientists have made some amazing inventions and discoveries which have changed the way we live. These people do deserve a tribute from us mankind and thus we’ve set our blog in a tributary for great scientists for today.

Role of scientists in our society

If I ask you to go back to the early human age, what will you imagine? Man in rags who is hunting in the jungles and eating raw food is what all of us will imagine. But what brought about the revolution and evolution that today we are looking forward to the age of flying cars and spaceships? Trust me or not, but every now and then someone genius enough is born who enlightens our world and invents what’s never seen before. Yes, I am talking about scientists who are responsible for how we see and live today. Do you know why they are important to the society? Read below:

  • A scientist is the one who finds the answers to questions that everyone is wondering about.
  • Scientists have helped us evolve in many ways that we cannot define.
  • They have justified our existence and significance in the universe.
  • Scientists are responsible for the fact that we can reach the moon and back.
  • Scientists research about things that are beyond our imagination and therefore, help us live our lives comfortably.
  • It’s only because of the scientists that we are able to fly up in the air via the airplanes or look under the sea because of the submarine.
  • Scientists are continuously working on making our lives better by researchers and inventions.
  • We can always keep hoping for the betterment of our lives because the scientists are curious to invent and research.

List of  most famous scientists who changed the world.

20. Luis Alvarez

Luis Alvarez

Luis Alvarez gained fame when he discovered the iridium layer and his theory on dinosaurs. He was the first to expedite the extinction of dinosaurs after a large meteorite hit the Earth. He also invented the Microwave Phased Array Antenna, that has helped in eradicating hostilities in airspace due to poor weather conditions. He was awarded Nobel Prize in Physics for his dignified work in particle physics.

Read Also: Top 10 Greatest Medical Inventions That Changed The World

19. Wilhelm Roentgen

Wilhelm Roentgen

William Rontgen was a physics professor who the first person to discover the X-rays. He generated X-Ray photography within two weeks of discovering the X-ray functioning. He helped shape successful transformation and diagnosis of bone injuries and diseases. He was awarded an honorary degree in medicine for his discovery of X-ray. He also earned Nobel Prize in Physics in 1901.

18. William Crookes

William Crookes

William Crookes was a physical chemist who went onto discover the element thallium. He further invented the Crookes tube, which is used to generate so-called cathode rays. Crookes tube is an evacuated electrical discharge tube which is facilitated to stream electrons via cathode rays. Crookes tube normally uses magnetic fields which consist of negatively charged particles.

17. Lord Kelvin

Lord Kelvin

Next up on the list is William Thomson who is also known as Lord He was the first person to codify the first two laws of thermodynamics. He deduced the absolute zero of temperature, i.e. -273.15 degree Celsius. Adhering to his work in temperature phenomenon, he was honored with Kelvin temperature scale whereby the absolute zero is termed as O degree, Kelvin. He was also a physics professor who devised equipment and invented many devices. He also patented the transatlantic telegraph signaling via undersea cable.

16. James Clerk Maxwell

James Clerk Maxwell

James Clerk Maxwell was a Scottish Mathematical physicist who founded the concept of electromagnetic field. He devised a set of equations that helped clarify the electronic field. He was the first person to take a color photograph after devising his study in optics and speed. His work laid the foundation for the thermodynamics and kinetic theory. One such development was Maxwell-Boltzmann distribution which set in relativity and quantum mechanics. His work led him to be regarded as a prominent physicist.

15. Robert Hooke

Robert Hooke

Robert Hooke was the one who discovered the Hooke’s Law- the law of elasticity. He also invented the balance spring which has been vital in displaying accurate timekeeping in pocket watches. He also discovered plant cells in his early expedition as a scientist. Furthermore, he invented the machine that cut teeth for cogs used in the watch mechanism.

14. Stephen Hawking

Stephen Hawking

A modern day great theoretical physicist and cosmologist, Stephan Hawking has been the face of gravitational singularity theorems. He has also given the theoretical explanation to the Hawking radiation, the phenomenon dealing with black holes emitting radiation. He is a vocal advocate of many world’s interpretations of quantum physics. He was awarded Presidential Medal of Freedom for his works.

13. Sir Jagadish Chandra Bose

Jagadish Chandra Bose

Named as Jagadish Chandra Bose or simply J.C. Bose was a polymath, physicist, biologist, botanist, archaeologist and an early science fiction writer. He is known for his innovative invention Cresco-graph which pioneered discoveries in plant physiology. He was also the first person to use semiconductor junctions to detect radio signals.

12. Michael Faraday

Michael Faraday

Michael Faraday is known for his discoveries on electromagnetic inductions and rotations. He further elaborated the via magnetization and magneto-optical effect. It was his outing that led to the electric motor and Faraday’s ring. After having to leave school at fourth grade, he joined theworkforce as a bookbinder and taught himself to read and write. He wrote books on ‘Experimental Researches in Electricity’ and ‘Chemical History of Candle’.

11. Aristotle


A famed biologist, zoologist, ethicist, poet and political scientist, Aristotle was a profound master of rhetoric and logic. He has theories in physics and metaphysics that are held with high regard to this day. Although only a few of his teachings and discoveries have been kept intact till date, his elaboration on matters of science is highly sought. He was a student of the great Plato and a tutor to Alexander the Great.

Read Also: Top 10 Greatest Modern Inventions That Changed Our Lives

10. Volta


The famous Italian physicist Alessandro Volta is one of the revolutionary scientists, who developed the electrical battery, laying down the foundation of the electric age. Volt, the unit of electricity, has been named to honor this great scientist.

9. Archimedes


The next name on the list of greatest scientists who changed the world is that of the genius mathematician, Archimedes, who was responsible for laying the foundation of calculus. He also made discoveries on buoyancy, laws of lever, fluid equilibrium and hydrostatics.

8. Marie Curie

Marie Curie

Marie Curie is the only women on the list of scientists who changed the world, This Polish scientist was also the first woman to be honored with Nobel Prize. She dedicated her life to scientific experiments on radioactivity and discovering elements which exhibited this property, such as radium and thorium. Her work in the field earned her the title of “Mother of Atom Bomb”.

7. Galileo


Next on the list of greatest scientists is Galileo, who made outstanding discoveries in the fields of physics and astronomy. He was the person who invented the telescope for studying heavenly bodies. Discovery of Law of the pendulum is another one of his glorious contributions to the world. The 4 moons which revolve around Jupiter were discovered by him and are also named after this great scientist.

6. Charles Darwin

Charles Darwin

Charles Darwin, the great English zoologist, is credited with presenting the theory of evolution, which has been a great contribution to the human race. The theory plays a key role in comprehending the origin of human life, besides explaining the diversity in it.

5. Thomas Alva Edison

Thomas Alva Edison

One of the most successful inventors was Thomas Alva Edison, who made 1093 inventions during his career, including lights, power, battery, telegraphs and mining. He also made improvements on the telephone, besides inventing kinetoscope. He was a hard working scientist and spent more than 20 hours a day working.

4. Nikola Tesla

Nikola Tesla

Nikola Tesla was a hidden genius, who played a key role in changing the world with a large number of inventions, most of which were copied or stolen by others. The 1856 born Serbian scientist was far ahead of his time. His achievements include generation of a current much before Edison did it, besides inventions like RADAR and X-Rays. He is also credited with the invention of remote control, electric motor, neon lights and an earthquake the machine.

3. Louis Pasteur

Louis Pasteur

Louis Pasteur was a scientist recognized for his contributions in the field of biology and medicine, particularly for inventing the process of Pasteurization for preventing milk from being damaged by microbes. He was also acclaimed for finding vaccines for diseases like rabies and anthrax, in addition to acure for puerperal fever. He was called the father of microbiology as he discovered the Germ Theory, which helped in prevention and cure of disease.

2. Albert Einstein

Albert Einstein

Featuring next on the list of top 10 scientists who changed the world is the great physicist, Albert Einstein, who is regarded as the father of modern physics. His greatest achievement is the development of the theory of relativity. The great German scientist was honored with Nobel Prize for Physics in 1921 for discovering the Law of Photo electrical Effect.

1. Sir Isaac Newton

Sir Isaac Newton

One of the greatest scientists, who was responsible for discovering the law of gravity, was Sir Isaac Newton. The England-born scientist also revolutionized mathematics by introducing the concept of Calculus. His other contributions include the study of Laws of Motion, invention of telescope and study of the speed of sound.

These greatest scientists have brought about revolutionary changes in the world with their inventions and discoveries. They will always be remembered for their glorious contributions.

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