Gravity if one of the four fundamental forces in the universe. Thoughthe fundamental principles of it eluded scientists until Sir Isaac Newton was able to mathematically describe it in 1687 (Eddington 93). Gravity plays a serious part in everyday actions as it keeps everything on the ground; without gravity everything would be immobile unless a force was applied (then it would move infinitely because there would be no force to stop it).
Perhaps, the best place to start then would be with such a simple item as an apple (after all it is what "sparked" Newton's creativity). The apple is one of the two curiosities (the other being the moon) that led Newton to discover The Law of Universal Gravitation in 1666 (Eddington 93).
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