Answer:
Using a magnetometer, the Cussler crew located a metal object about four miles off the coast of Sullivan's Island. After diving in nearly 30 feet of water, they removed three feet of sediment to reveal one of the Hunley's two small conning towers.
Explanation:
Answer:
What he said: I write an argumentative letter in which he commented on an opinion that accused our civilization of closing in, and through which it became clear that the Islamic civilization contributed to the advancement of nations and interacted with them.
Explanation:
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).
Answer:
A major change in the iron industries during the era of the Industrial Revolution was the replacement of wood and other bio-fuels with coal.
Explanation:
