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Modern spectroscopy in the Western world started in the 17th century. New designs in optics , specifically prisms , enabled systematic observations of the solar spectrum . Isaac Newton first applied the word spectrum to describe the rainbow of colors that combine to form white light.
The early modern period is a historical period that is part of, or (depending on the historian) immediately preceded, the modern period, with divisions based primarily on the history of Europe and the broader concept of modernity. There is no exact date that marks the beginning or end of the period and its extent may vary depending on the area ...
An Encyclopedia of World History (5th ed. 1973); highly detailed outline of events online free Morris, Richard B. and Graham W. Irwin, eds. Harper Encyclopedia of the Modern World: A Concise Reference History from 1760 to the Present (1970) online
The modern era or the modern period is considered the current historical period of human history. It was originally applied to the history of Europe and Western history for events that came after the Middle Ages , often from around the year 1500, like the Reformation in Germany giving rise to Protestantism .
The history of quantum mechanics is a fundamental part of the history of modern physics. The major chapters of this history begin with the emergence of quantum ideas to explain individual phenomena—blackbody radiation, the photoelectric effect, solar emission spectra—an era called the Old or Older quantum theories. [1]
1st century AD – Pliny in his Natural History records the story of a shepherd Magnes who discovered the magnetic properties of some iron stones, "it is said, made this discovery, when, upon taking his herds to pasture, he found that the nails of his shoes and the iron ferrel of his staff adhered to the ground". [6]
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The history of electromagnetic theory begins with ancient measures to understand atmospheric electricity, in particular lightning. [1] People then had little understanding of electricity, and were unable to explain the phenomena. [ 2 ]