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Democrites stated that everthing is composed of "atoms" and which are physically and geometrically indivisble.
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He disobelived the ancient greek theory of how atoms are geometrically the same size and their constant motion.
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Robert Boyle Identified that 2 substances thats can be break down or more is not an element.
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Sir isaac newton chacterized the functional universe with small soild masses in motion.
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Laviosier create the principle of mass stats that when the conservation of energy is inclosed in a system on tranformation will happen overtime.
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William crookes found the fundmental delvopment for atomic physics.
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John dalton found the 5 theorys for atoms Matter is made up of indivisible atoms.
All atoms of an element are identical.
Atoms are neither created nor destroyed.
Atoms of different elements have different weights and chemical properties.
Atoms of different elements combine in simple whole numbers to form compounds. -
Michael faraday found that anything that glows is electrically charged.
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Found the atomic mass and the electron also discovered that the charge to mass ratio depended on filling gas in the tube.
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Found the calculation of the mass of the electron and the positively charged atom.
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Harriet Brooks investigated radioactive elements.
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Rutherford proposed that all of the positive charge and all of the mass of the atom occupied a small volume at the center of the atom and that most of the volume of the atom was empty space occupied by the electrons.
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invented the mass spectrograph in 1920. And observed that there were 3 types of hydrogen atoms.
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Hantario nagaoka was the first scientist to present the first saturnian atom model.
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James chadwick discover the neutron and interestingly led to the atomic bomb.
