Basic Physics - PEACEONE

2 Basic Physics2-1 IntroductionIn this chapter, we shall examine the most fundamental ideas that we haveabout Physics the nature of things as we see them at the present time. We shallnot discuss the history of how we know that all these ideas are true; you willlearn these details in due things with which we concern ourselves in science appear in myriad forms,and with a multitude of attributes. For example, if we stand on the shore and lookat the sea, we see the water, the waves breaking, the foam, the sloshing motionof the water, the sound, the air, the winds and the clouds, the sun and the bluesky, and light; there is sand and there are rocks of various hardness and perma-nence, color and texture. There are animals and seaweed, hunger and disease, andthe observer on the beach; there may be even happiness and thought.

2-2 Physics before 1920 It is a little difficult to begin at once with the present view, so we shall first see how things looked in about 1920 and then take a few things out of that picture.

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