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Hooke gave the first rational explanation of combustion and Mayow studied animal respiration.

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In 1706 Benjamin Franklin coined the terms positive and negative charge.

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In 1706 Benjamin Franklin coined the terms positive and negative charge.

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In 1736 James Watt invented the modern condensing steam engine.

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In 1736 James Watt invented the modern condensing steam engine.

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The founder of modern chemistry who discovered that volume and pressure are inversely related as gases.

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In 181Johann Dobereiner was a German scientist who was the first to attempt to organize the elements.  

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In 181Johann Dobereiner was a German scientist who was the first to attempt to organize the elements.  

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In 1796 Sadi Carnot developed the science of thermodynamics.

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In 1796 Sadi Carnot developed the science of thermodynamics.

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In 1857 Heinrich Hertz developed radio waves as well as the photoelectric effect.

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In 1857 Heinrich Hertz developed radio waves as well as the photoelectric effect.

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He researched Hydrogen and showed that the explosion of hydrogen and oxygen produces water.

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In 1869 Russian chemist Dmitri Meendelev discovered major parts of the periodic table and how many elements were similar. He was able to make a table out of the elements and left spaces for elements that had yet to be discovered. 

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In 1869 Russian chemist Dmitri Meendelev discovered major parts of the periodic table and how many elements were similar. He was able to make a table out of the elements and left spaces for elements that had yet to be discovered. 

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James Chadwick discovered the neutron in 1932.

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James Chadwick discovered the neutron in 1932.

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- Major contributor to physics in the 20th century
- developed the general theory of relativity
- his work had a major impact on the development of atomic energy

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Most of his finding are from 1915-1936. Sir Joseph John Thomson discovered the electron and investigated its charge and mass. He also developed a mathematical theory of electricity and magnetism.

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In 1914, an English chemist, Henry Gwyn-Jeffries Moseley made the first major revisions to the periodic table. He figured that each atom could be assigned a number based on the number of positive charges it had. 

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In 1914, an English chemist, Henry Gwyn-Jeffries Moseley made the first major revisions to the periodic table. He figured that each atom could be assigned a number based on the number of positive charges it had. 

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In 1623, he created Pascal's Theory which is when pressure is asserted on a liquid it will be equally distributed equally throughout the liquid.

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In 1818, he developed the joule and the mechanical equivalent of heat.

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- made Newton’s classical physics work side-by-side with quantum mechanics.
- This makes computer simulations that are realistic and closely resemble the outcome of traditional laboratory experiments.

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In 1913 Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted. Bohr's theory could explain why atoms emitted light in fixed wavelengths. 

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In 1913 Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted. Bohr's theory could explain why atoms emitted light in fixed wavelengths. 

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In 1687, he discovered the three laws of motion.

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- "Father of Modern Electrochemistry"
- His discovery of electrogenerated chemiluminescence (ECL) has enabled the medical community to detect the HIV virus and analyze DNA

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John Dalton is famous for the identification and presenting the atomic theory. He was recognized for his work on the atomic theory and research on color blindness. He successfully identified chemical compounds and reactions affected by interaction of atoms with one another.

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John Dalton is famous for the identification and presenting the atomic theory. He was recognized for his work on the atomic theory and research on color blindness. He successfully identified chemical compounds and reactions affected by interaction of atoms with one another.

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1845-1923
German scientist who discovered and studied x rays

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1858-1947
German scientist who formulated the quantum theory; explained wavelength distribution of blackbody radiation

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Pierre Jean Robiquet discovered caffeine in 1821.