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Proposed the idea of atomos (indivisible particles). Suggested that all matter is composed of small, indestructible units called atoms. This concept laid the groundwork for the atomic theory but lacked experimental evidence. -
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Developed the Atomic Theory, stating that elements are made of atoms, each aspect has identical atoms, and atoms combine in fixed ratios to form compounds. This helped explain chemical reactions and conservation of mass. -
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Discovered the principles of electromagnetic induction and electrolysis.
Showed that atoms are associated with electrical charges, paving the way for the idea that atoms could have internal structures like electrons. -
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Discovered canal rays (positive rays), leading to the discovery of protons. -
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Discovered canal rays (positive rays), leading to the discovery of protons.
His work suggested that atoms contain positively charged particles, challenging the idea that atoms were indivisible.
Also discovered Electrons -
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Conducted the Oil Drop Experiment, measuring the charge of the electron and confirming the quantization of electric charge.
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Proposed the nuclear model, showing that atoms have a small, dense, positively charged nucleus surrounded by electrons. -
Developed the Bohr Model, where electrons orbit the nucleus in fixed energy levels, explaining hydrogen line spectra and introducing quantized electron energy levels. -
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Developed the Quantum Mechanical Model, introducing the Schrödinger equation that describes electrons as wavefunctions, giving a more accurate depiction of electron distribution. -
Formulated the Heisenberg Uncertainty Principle, which states that the position and momentum of an electron cannot be precisely determined simultaneously, introducing the concept of probability clouds for electron positions.
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Discovered the neutron, a neutral particle in the nucleus, completing the basic understanding of atomic structure and advancing nuclear physics. -
Discovered the neutron, a neutral particle in the nucleus, completing the basic understanding of atomic structure and advancing nuclear physics.
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