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100
She was a British–American astronomer and astrophysicist who, in 1925, proposed in her Ph.D. thesis an explanation for the composition of stars in terms of the relative abundances of hydrogen and helium.
Who is Cecilia Payne-Gaposchkin?
100
He was an American statesman and scientist. He was a prodigious inventor. In 1775 he built a prototype odometer which he attached to his carriage so he could calculate the distance his carriage travelled by how many times the wheels rotated. Among his many creations were the lightning rod, glass harmonica (a glass instrument, not to be confused with the metal harmonica), heat efficient stove, bifocal glasses and the flexible urinary catheter.
Who is Benjamin Franklin?
100
She was an American biochemist and pharmacologist. She discovered drugs to treat two deadly diseases. She treated Leukemia and Herpes.
Who is Gertrude Elion?
100
He was an Italian-American physicist who worked on the first nuclear reactor and helped make quantum theory. He also was important to particle physics, and statistical mechanics. He won the Nobel Prize in Physics in 1938 for his work on induced radioactivity. He built the world's first nuclear reactor.
Who is Enrico Fermi?
100
was an Indian physicist. He studied light scattering. He discovered that, when light passes through a transparent material, some of the deflected light changes in wavelength.
Who is C. V. Raman?
200
He was a German physicist. He became known for the precise instruments he made. He was the first to be able to determine the temperature with precision. He was the first to be able to determine the temperature with precision. In the year 1721 he discovered that water can be cooled below its freezing point without actually turning into ice. He also developed a hydrometer, a pycnometer and a hypsobarometer.
Who is Daniel Fahrenheit?
200
He was an American engineer and inventor who is widely credited with developing a commercially successful steamboat; the first was called The North River Steamboat (later Clermont). He produced the Nautilus, the first practical submarine in history. He is also credited with inventing some of the world's earliest naval torpedoes for use by the British Royal Navy.
Who is Robert Fulton?
200
He was a Scottish biologist and pharmacologist. He is best known for discovering the antibiotic substance penicillin in 1928. He shared Nobel Prize in Physiology or Medicine in 1945 for this discovery. His accidental finding of penicillin in the year 1928 marked the start of today's antibiotics.
Who is Alexander Fleming?
200
was a German-born scientist. He worked on theoretical physics. He developed the theory of relativity. He received the Nobel Prize in Physics in 1921 for theoretical physics. His famous equation is 
(E = energy, m = mass, c = speed of light).
Who is Albert Einstein?
200
He was a German physicist. In 1888 he discovered the radio waves previously predicted by Maxwell's equations. He also proved that light is a kind of electromagnetic waves. The unit for frequency is named after him.
Who is Heinrich Hertz?
300
He was an astronomer, physicist, and mathematician. did his greatest work in astrophysics. He was also a philosopher of science and a popularizer of science. he anticipated the discovery and mechanism of nuclear fusion in stars. At that time, the source of stellar energy was a complete mystery; he was the first to correctly speculate that the source was fusion of hydrogen into helium.
Who is Arthur Eddington?
300
was an American inventor and entrepreneur, who invented many things. He developed one of the first practical light bulbs, but contrary to popular belief did not invent the light bulb. He started the General Electric Company to make some of the things he invented. He invented the carbon microphone, the phonograph, and the electric power distribution network.
Who is Thomas Edison?
300
He was an American surgeon and medical researcher. He researched in the field of blood transfusions, developing improved techniques for blood storage, and applied his expert knowledge to developing large-scale blood banks early in World War II
Who is Dr. Charles Drew?
300
He was a Swedish botanist, physician and zoologist who created the binomial nomenclature. In this system, every kind of animal and plant is given a name consisting of two Latin words, for its genus and species. He is known as the "father of modern taxonomy".
Who is Carl Linnaeus?
300
He was a Scottish Chemist who discovered that the rate of diffusion of different gases, at a constant temperature, is inversely proportional to the square root of its density. This law is named for him.
Who is Thomas Graham?
400
He was an Italian physicist, astronomer, and instrument maker. He discovered that the Milky Way is made of many stars. He discovered that the Moon has hills. He found four moons around Jupiter. He discovered sunspots which are dark areas of the Sun. He saw that the planet Venus has light and dark phases just like the Moon. This helped people to know that the Sun is at the center of the Solar System.
Who is Galileo Galilei?
400
He was an English engineer who is known for his contributions to electronics, photometry, electric measurements, and wireless telegraphy. He invented the first vacuum tube, the diode.
Who is John Ambrose Fleming?
400
was a British biophysicist, known for her contributions to the discovery of the structure of DNA. She also worked on coal, studies of RNA, and viruses. She was one of the first people to do X-ray crystallography on DNA.
Who is Rosalind Franklin?
400
He was an Austrian monk and botanist. He founded genetics by his work cross-breeding pea plants. He discovered dominant and recessive characters (genes) from the crosses he performed on the plants in his greenhouse.
Who is Gregor Mendel?
400
He was an English physician known for creating the vaccine for smallpox. The practice of vaccination was popularized by him, and since then has been used to prevent several diseases.
Who is Edward Jenner?
500
He was an Italian physicist and mathematician and inventor of the barometer. He designed and built several microscopes and telescopes and several large lenses can still be seen in Florence.
Who is Evangelista Torricelli?
500
He was an English chemist and physicist. He discovered many things about the way electricity flowing in a wire can act like a magnet (now called electromagnetism). He also found out a lot about the way electricity can be used with chemicals to make them change (now called electrochemistry). His inventions of electromagnetic rotary devices formed the foundation of electric motor technology. As a chemist, he discovered benzene.
Who is Michael Faraday?
500
She is a French professor and researcher of microbiology, genetics and biochemistry. She, along with a colleague, were awarded the Nobel Prize in Chemistry "for the development of a method for genome editing". In 2018, she founded an independent research institute, the Max Planck Unit for the Science of Pathogens.
Who is Emmanuelle Charpentier?
500
was an American geologist. He was one of the founders of the field of planetary science. He discovered a comet that is named for him, his wife, and a colleague.
Who is Gene Shoemaker?
500
He was a Russian chemist who created the periodic table of elements.
Who is Dmitri Mendeleev?