Thomson Joseph John Thomson

Early History of the Atom Matter is composed of indivisible building blocks. This idea was recorded as early as the fifth century BCE by Leucippus and Democritus. The Greeks called these particles atomos, meaning indivisible, and the modern word “atom” is derived from this term.

400 B.C.

Acharya Kanada

Answer. Parmanu bomb discovery by nuclear physicists in a laboratory in Berlin, Germany, in 1938 made the first atomic bomb possible, after Otto Hahn, Lise Meitner and Fritz Strassman discovered nuclear fission.

John Dalton

Maharishi kanad

From Latin atomus (“smallest particle”) (borrowed via some other European language), from Ancient Greek ἄτομος (átomos, “indivisible”), from ἀ- (a-, “not”) + τέμνω (témnō, “I cut”).

Acharya Kanad

It was Kanada who originated the idea that anu (atom) was an indestructible particle of matter.

Yajnavalkya

Thales

Top 10 Ancient Greek Philosophers

• Parmenides (560 BC – 510 BC)
• Anaxagoras (500 BC–428 BC)
• Anaximander (610 BC–546 BC)
• Empedocles (490 BC–430 BC)
• Zeno (490 BC–430 BC)
• Pythagoras (570 BC–495 BC)
• Socrates (469 BC–399 BC)
• Plato (427 BC–347 BC)

King Solomon

Answer: The ancient Oracle said that I was the wisest of all the Greeks. It is because I alone, of all the Greeks, know that I know nothing.”

He was the wisest man in Athens because he alone was prepared to admit his own ignorance rather than pretend to know something he did not.

They’re typically made up of three main parts: protons, neutrons and electrons. Think of the protons and neutrons as together forming a “sun”, or nucleus, at the centre of the system. The electrons orbit this nucleus, like planets. If atoms are impossibly small, these subatomic particles are even more so.

Greek Origins The idea that all matter is made up of tiny, indivisible particles, or atoms, is believed to have originated with the Greek philosopher Leucippus of Miletus and his student Democritus of Abdera in the 5th century B.C. (The word atom comes from the Greek word atomos, which means ? indivisible.?)

In Greek, the prefix “a” means “not” and the word “tomos” means cut. Our word atom therefore comes from atomos, a Greek word meaning uncuttable. The word is derived from the Greek word “atomos”, meaning indivisible. Twentieth century physics was able to probe atoms and prove that they are not, in fact, indivisible.

The ancient atomic theory was proposed in the 5th century bc by the Greek philosophers Leucippus and Democritus and was revived in the 1st century bc by the Roman philosopher and poet Lucretius.

The five atomic models are as follows:

• John Dalton’s atomic model: Dalton´s Billiard Ball (Solid Sphere) Model.
• J.J. Thomson’s model: Plum Pudding model.
• Ernest Rutherford’s model: Nuclear model.
• Niels Bohr’s model: Planetary model.
• Erwin Schrödinger’s model: Electron Cloud Model/Quantum Model.

Atomic models

• John Dalton’s atomic model.
• Plum pudding model.
• Rutherford’s model of the atom.
• Bohr’s model of the atom.
• Electron Cloud Model/Quantum Mechanics Model of Atom.
• Basic description of the quantum mechanical atomic model:
• Sources:

Generally speaking, the Bohr model encapsulates the modern understanding of the atom. This model is often depicted in artwork showing a central atomic nucleus and oval lines representing the orbits of the electrons. The Bohr Model – with the size of the nucleus drawn WAY too big.

• Dalton model (Billiard ball model)
• Thomson model (Plum pudding model)
• Lewis model (Cubical atom model)
• Nagaoka model (Saturnian model)
• Rutherford model (Planetary model)
• Bohr model (Rutherford–Bohr model)
• Bohr–Sommerfeld model (Refined Bohr model)
• Gryziński model (Free-fall model)