believed that matter consisted of noncuttable pieces he called atomos

The ancient Greek philosopher Democritus is credited with the belief that matter consisted of noncuttable pieces, which he referred to as "atomos." He proposed that all matter is composed of these indivisible particles that are constantly in motion. Democritus also postulated that different types of atoms have different shapes and sizes, giving rise to the various properties and qualities observed in different materials. While Democritus' atomic theory laid the foundation for modern atomic theory, it was further developed and expanded by other philosophers and scientists such as John Dalton and Albert Einstein.

The person who believed that matter consisted of noncuttable pieces called "atomos" was an ancient Greek philosopher named Democritus. He proposed this idea around the 5th century BCE, suggesting that atoms were indivisible and indestructible particles that made up all matter in the universe. Democritus argued that different types of matter had different arrangements and combinations of atoms, which explained the diversity of substances present in the world.

The belief that matter is made up of noncuttable particles called "atomos" was proposed by the ancient Greek philosopher Democritus. He hypothesized that all matter in the universe is made up of indivisible and indestructible particles called atoms.

To explain how Democritus arrived at this idea, we need to understand the context in which he lived. In ancient Greece, there were two prominent schools of thought regarding the nature of matter. One school, led by philosophers like Plato and Aristotle, believed that matter could be infinitely divided into smaller parts. They argued that matter was continuous and could be further broken down into smaller and smaller pieces with no ultimate limit.

However, Democritus took a different approach. He believed that there was a fundamental limit to how small matter could be divided. He reasoned that if matter could be infinitely divided, then there would be no end to the process, which he found to be illogical. Instead, he proposed that matter is ultimately composed of tiny, indivisible particles that he called "atomos," derived from the Greek word meaning "uncuttable" or "indivisible."

Democritus argued that these atoms are eternal, unchanging, and indestructible. He believed that different types of matter are composed of different arrangements and combinations of atoms. For example, he proposed that water is made up of smooth, round atoms, while iron is composed of rough and sharp atoms.

It is important to note that Democritus' ideas about atoms were purely philosophical and lacked experimental evidence or rigorous scientific investigation. His atomic theory was largely speculative. However, his ideas laid the foundation for the development of modern atomic theory, which was further developed and validated by scientists like John Dalton and Albert Einstein.