Nicolaus Copernicus Nicolaus Copernicus‚ who lived from 1473 until 1543‚ is known for his idea that the sun is motionless at the center of the universe and that the earth and other planets all revolve around it. This Polish astronomer revolutionized beliefs involving the universe‚ making his thoughts controversial in his time‚ but common knowledge in our own (Westman). Before the time of Copernicus‚ people had extremely different views of the universe. A Greek astronomer named Ptolemy had his
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CHAPTER 5: LIGHT In each of the following sentences‚ fill in the bracket the appropriate word or words given below. solid‚ liquid‚ gas‚ vacuum‚ electromagnetic wave‚ energy 1. Light is a form of ( ). 2. It travels in the form of ( ) 3. In can travel through ( ) 4. It travels fastest in the medium of ( ) 5. Light of different colours
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Callie Swafford Mrs. Falcone Honors Humanities: period 3 April 19‚ 2013 Galileo Galilei: an Autobiography On the night of February 15‚ 1564‚ my parents held me‚ the first of their six children‚ for the first time. My father‚ Vincenzo Galilei‚ was well known in my birth city‚ Pisa‚ for his lute playing and musical theories. My mother‚ Giulia Ammannati‚ held me on my first night out of the womb and softened my cries by whispering my name‚ Galileo Galilei‚ over and over again. A few years later‚ when
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institutions‚ such as Cornell‚ MIT‚ and Harvard‚ have been searching for life. NASA has been searching for decades and have found some very convincing data of possible life. They have used several telescopes‚
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of you believe in aliens? Well if you don’t‚ here are a bunch of reasons why you should believe that aliens exist. Let’s consider galaxies first. There may be 100‚000‚000 galaxies‚ because an estimated 50 billion galaxies are visible with modern telescopes. Every galaxy must have a number of stars in it‚ as many as hundreds of billions. Now we all know that stars have planetary systems. Then it is also a well known fact that the dimming and brightening of a star is when a planet crosses its disk.
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analysis; earning the status as the founder of modern mechanics and experimental physics (2). He also introduced the use of pendulums instead of clocks and proposed the law of uniform acceleration between falling objects. Finally‚ he developed the telescope with which he discovered the craters of the moon‚ sunspots‚ phases of Venus‚ and the satellites of Jupiter.
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evaporation of flowing water. Looking through his telescope Lowell became convinced he could see a network of artificial canals. This led him to believe that there were intelligent beings on Mars who had built these canals. However‚ spacecraft have now visited Mars and found that there is no evidence of water at all. It is now thought that the lines he could see were the combination of Lowell’s overactive imagination‚ and scratches on the lens of his telescope. We are now searching one of Jupiter’s moons
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in Juneau. I was so excited that I almost dropped my telescope into the deep‚ blue water. I could see a whale flipping in the water. It splashed the waves with its huge‚ flat tail and dived into the water. The captain drove the boat closer to the whales. One of them jumped out in a curved position. As it dived into the water‚ its tails waved back and forth. Water was splashed out on the top of a blue whale’s head. Looking there from the telescope‚ it looked like a fountain. This trip was extra-entertaining
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a)What is the angular speed in radians per second? b) what is the linear speed in ft/sec? 30. The 25‚000 pound Hubble space telescope was launched April 1990 and placed in a 380 mile circular orbit above the earth’s surface. It completes one orbit every 97 minutes‚ going from a dawn‐to‐dusk cycle nearly 15 times a day. If the radius of the earth is 3964 miles‚ what is the linear velocity of the space telescope in miles per hour? 30) rθ/t ((4344mi)(2π)/97min)(60min/1hr) 168882.98 mph 31. Solve for θ in both radians and degrees
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Sir Isaac newton had a gigantic effect on society and even now teachers are still teaching his three laws of motion from 1687. He has published the most revered book in science known as Philosophiae Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy) which is more commonly known as Principia. He helped explain elliptical planetary orbits and nearly every motion in the universe including how all of the planets in our solar system revolve around the sun. Isaac Newton
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