Isaac Newton was creative in his use of prisms to show how white light is actually made up of multiple colors. He used logic in the way he presented his arguments rhetorically in order to convince readers of the correctness of his conclusions.
Newton was not the first to experiment with passing light through prisms to determine how light works. French philosopher Rene Descartes had done prism experiments of his own. But Descartes had thought that passing through a prism actually modified the light in order to produce the color spectrum. Newton correctly understood that when light refracted through the prism, it revealed the range of colors that were naturally in the light. He then used a second prism, blocking all but one color, to show that a single color passing through a prism was not modified in color. He also showed--by positioning the second prism differently--how the multiple colors of light could be recombined into white light again.
Newton's 1672 paper on light refracting through prisms established his reputation as a scientist. He continued to study light throughout his scientific career, publishing a larger work in 1704 on <em>Opticks </em>(as they spelled "optics" then).
1. Land Grant System- offered each railroad company land
2. Companies sold off their excess land to settlers, real estate agents, and businesses- able to cover all building costs because of this.
The correct answer to this open question is the following.
You did not specify what war you are talking about. Trying to help you we are going to assume that you are talking about World War I.
In addition to fighting in the army, European colonies contributed to the war effort in that these colonies sent supplies and food to the war front in Europe.
European superpowers had colonies in Africa, India, and Asia, places where there were plenty of natural resources and raw materials that were much needed by European countries during World War I. Great Britain and France were the European countries that used most soldiers from their colonies after many white troops were killed on the battlefield.
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Prosperity in the Gupta Empire initiated a period known as the Golden Age of India, marked by extensive inventions and discoveries in science, technology, engineering, art, dialectic, literature, logic, mathematics, astronomy, religion, and philosophy.
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