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History Of Modern Physics
Physics is a branch of science in which the primary objects of study are matter and energy. These topics were discussed across many cultures in ancient times by philosophers, but they had no means to distinguish causes of natural phenomena from superstitions. The Scientific Revolution of the 17th century, especially the discovery of the law of gravity, began a process of knowledge accumulation and specialization that gave rise to the field of physics. Mathematical advances of the 18th century gave rise to classical mechanics, and the increased used of the experimental method led to new understanding of thermodynamics. In the 19th century, the basic laws of electromagnetism and statistical mechanics were discovered. At the beginning of the 20th century, physics was transformed by the discoveries of quantum mechanics, relativity, and atomic theory. Physics today may be divided loosely into classical physics and modern physics. Ancient history Elements of what became phys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Past
The past is the set of all Spacetime#Definitions, events that occurred before a given point in time. The past is contrasted with and defined by the present and the future. The concept of the past is derived from the linear fashion in which human observers experience time, and is accessed through memory and recollection. In addition, human beings have recorded history, recorded the past since the advent of written language. In English, the word ''past'' was one of the many variant forms and spellings of ''passed'', the past participle of the Middle English verb wikt:passen#Middle English, ''passen'' (whence Modern English ''pass''), among ''ypassed'', ''ypassyd'', ''i-passed'', ''passyd'', ''passid'', ''pass'd'', ''paste'', etc. It developed into an adjective and preposition in the 14th century, and a noun (as in ''the past'' or ''a past'', through Ellipsis (linguistics), ellipsis with the adjective ''past''''Oxford English Dictionary'') in the 15th century. Grammar In Englis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
