Study alone can never guarantee career success; but a good education is an important starting point.
Success in a career depends upon many things. Learning about physics is a fundamental starting point for so many different types of work: far more than just training for scientists!
Anyone who builds, moves, makes or uses any tool, materials or equipment; will benefit greatly from a better understanding of physics.
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If you look at all the objects around you at any point in time (tables, trees, chairs, houses, stones, water, oxygen, etc.) you can generally classify all objects as either solids, liquids or gases. But have you ever thought about the smallest building block of those objects?
An atom is the building block of matter, and this means that all matter is made of atoms. Scientists have undergone extensive research to determine the composition and structure of the atom, and back in 1911, a British scientist called Ernest Rutherford introduced the “Solar System Model” of the atom because his studies has shown that an atom is composed of a central nucleus containing positive charges, with negative charges orbiting in a cloud around the nucleus. The positive charges are called protons and the negative charges are called electrons.
It was later discovered that this model contains some deficiencies and scientists found out that the nucleus also contains neutral charges (called neutrons) inside the nucleus. The protons and neutrons move within the nucleus of the atom, and would never leave that nucleus. Since the Rutherford model was similar to the Bohr model, the new atom representation was later referred to as the Rutherford-Bohr model.
So basically, an atom is made of a nucleus surrounded by an outer cloud where electrons keep orbiting around the nucleus at a very high speed. The reason why this model was known as the “Solar System Model” is because in the solar system, the planets are also attracted to the sun which is in the centre of the solar system and they orbit around the sun in a similar way to the electrons.
An atom has a net charge of 0 (zero), because it contains the same number of protons in its nucleus and electrons orbiting its cloud. This means that an atom has an equal number of positive and negative charges which cancel out and yield a net charge of zero.
The charge of a single electron is -qe, it is equivalent to the elementary charge (e) (this is the charge carried by a single proton) but with a negative sign. Therefore the charge of a single electron is 01.602 x 10-19 C.
Quantum mechanics incorporates the idea that moving matter has both particles characteristics and wave characteristics.
Study alone can never guarantee career success; but a good education is an important starting point.
Success in a career depends upon many things. Learning about physics is a fundamental starting point for so many different types of work: far more than just training for scientists!
Anyone who builds, moves, makes or uses any tool, materials or equipment; will benefit greatly from a better understanding of physics.
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