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Who was the first person to propose that light is a stream of particles?
Isaac Newton was the first person to propose that light is made up of particles called "corpuscles" in the 17th century.
Did sir isacc newton propose the three laws of motion?
Yes, Sir Isaac Newton proposed the three laws of motion known as Newton's laws of motion. These laws describe the relationship between the motion of an object and the forces acting on it.
What did Bohr propose about electrons?
Bohr proposed that electrons orbit the nucleus of an atom in fixed, circular paths or energy levels. These paths are quantized, meaning electrons can only occupy specific energy levels and transition between them by absorbing or emitting energy. This formed the basis of the Bohr model of the atom.
What Greek philosopher propose that the speed at which an object falls is proportional to its massively Greek philosopher propose that the speed at which an object falls proportional to its mass?
Aristotle proposed that the speed at which an object falls is not proportional to its mass. He theorized that all objects fall at the same rate regardless of their mass. This was later experimentally confirmed by Galileo.
What evidence led Dalton to propose his atomic theory?
Dalton's atomic theory was based on his observations of chemical reactions and the Law of Multiple Proportions, which showed that elements combined in simple ratios. He also analyzed the behavior of gases and proposed that they were composed of individual particles. Additionally, Dalton's work on the behavior of gases led him to propose that atoms of different elements had different weights.
