who s a scientist that lived between 1800-1900?
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how about Charles Darwin?
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Lewis Waterman in 1884\nhttp://inventors.about.com/library/weekly/aa100897.htm
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Cor·rens (kôr'əns), Karl Erich 1864–1933.\n\nGerman botanist and geneticist whose research led to the rediscovery (1900) of Mendel's law of inheritance.
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Max Karl Ernst Ludwig Planck (April 23, 1858 – October 4, 1947) was one of the most important German physicists of the late 19th and early 20th century; he is considered to be the inventor of quantum theory.
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JEREMY BENTHAM\nEnglish jurist and philosopher\n(1748 - 1832)
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Born - July 23, 1746\nDied - November 30, 1786\n\nThere is much more at the link.
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Indrustial Revolution period starded at 1800.
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By narrowing down what you want to talk about. There was a lot that happened in the 19th century, and a lot's going on right now. What in particular would you like to compare? Politics, business, fashion, science, religion? Just pick one of them, and be specific. Otherwise, you'll write a book!
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Nikola Tesla (on all counts) http://en.wikipedia.org/wiki/Nikola_Tesla
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I believe yes. Today we read studies of ancient scientists like Demokritos who spoke about energy, space and physics or like the greek doctor Ippocrates and we find out that the were right in the most of what they were saying. Is really amazing that they  were so beyond their age!\nIs really worth to find and study their work.
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Marie Curie; Hedy Lamarr; Hypatia\n\nThere are others.  Your best bet is to search for them on google.
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It was first discovered by William Nicholson in 1800.
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1)Isaac Newton: The greatest genius that ever lived.  His work opened the natural world to study, and answered almost all of the major questions of his day.\n\n2) Aristotle: The most influential thinker until modern times, who established observation and logic and central principles in understanding the universe.\n\nThen, in no particular order:\n\nPlank, Einstein: physics-Plank established quantum physics (after a lot of resistance) and Einstein relativity.  Between the two, they brought us into the modern understanding of the universe-we have not really made discoveries of this significance since.\n\nMendel, Darwin: biology- The understanding of evolution, which is the origin of all the species (Darwin) and of the process of genetics (Mendel).\n\nWegener: geology: Plate tectonic theory-from him we understand a great deal of how the Earth is structured.\n\nFreud: psychology:  Almost none of his theories are believed today, but the very idea that there was a subconcious, that the mind was amenable to analysis, was absolutely revolutionary.  His work probably has more effect on the way the average person thinks about themselves and the world than any other on this list.\n\nLavoisier, Mendeleev: chemistry: Lavoisier overturned all of the thought of the day on chemistry with the establishment of conservation of mass.  Mendeleev constructed the periodic table of the elements, and explained property relationships-all of chemistry is built on this.
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look up scientists on \nhttp://en.wikipedia.org/wiki/Main_Page \nand check out the list of scientists. it will give you a summary of their lives so maybe you can find whatever you're looking for there. hope this helped.
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overall i'd say e=mc2-einstein of course. his theory is 100 years+ old & has yet tobe proven because science hasn't caught up yet in the modern era & the internet & computers & science universally. immediately the profound effects of what thomas edison has done by far contributed the most. have you ever lost power for more than two days. i never have until last year. let me tell you it was rather bleak. water got bad. food got bad. no fresh air & no a/c.thomas edison is #1. not to say the alexander graham bells, the polio vaccine, the x-ray inventor who died from the process of discovery, & much more have all been significant factors to our well being and yes the nuclear people are included for better & for worse.
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u contact any scientist
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http://en.wikipedia.org/wiki/Charles_darwin