[cosvis]

Hi to all,

I would like to continue to sahre with you the book I wrote already some time ago. We started with Part II, The Physical Cosmos. A study of the Physical Universe. We come now to:

CHAPTER II.

FORCES AND QUANTUM.

The physical cosmos is basically composed of different forces in nature like the force of gravity, the electro-magnetic force, the nuclear force and the weak nuclear forces. To come to appreciate and to get some understanding of the physical cosmos, it is important to understand these different forces and how they interact. The most basic force in nature would be gravity because all the movements of the earth, moon, sun, planets and galaxies are governed by its law. It took scientists many years to discover its nature but it was Sir Isaak Newton who gave us the formula of the law of universal gravitation. A very fundamental observation in nature is the movement of bodies and every material body in the universe is in continuous motion. Scientists at this time believe that the universe began with a Big Bang explosion about fifteen to twenty billion years ago and ever since that time, it has been constantly expanding. The galaxies are literally flying apart and their velocities of recession are constantly increasing.

Albert Einstein, who was one of the greatest physicists of his age, was convinced that everything in our universe is in constant motion and so based his general theory of relativity on it. He maintained that one cannot find a co-ordinate system in our universe that can be regarded to be at rest, and this is due to the fact that everything is in motion. Since all things then in our universe are relevant to each other, they must be governed by the laws of general relativity. Einstein's theories of special and general relativity have been proven to be correct so many times that they are accepted as fundamental laws of nature by most scientists. It is difficult to dispute Einstein's assumption that within the universe there is no co-ordinate system that can be regarded to be at rest. Consequently, it can be assumed that the Newtonian laws of motion and momentum cannot strictly be applied at any time to any object or particle within the universe. The question, however, may be asked whether the universe as a whole, with all its constituent bodies, particles and energies forms a unique independent and isolated system of energy that is not affected by any forces or motion from without?

To be continued.

Yours Cosvis.