experimentally. Fresnel worked on numerous formulas to calculate the way light changed directions‚ while passing through the prisms. He worked with some of the most advanced glass makers of his day. He later found out that when using the prisms and angling them to gather light‚ it intensified and it would project outward. Fresnel’s greatest creation is a large object that resembles a beehive‚ and is on display at the National Museum of American History. The Fresnel lens is not just one lens but a number
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He performed experiments at the University of Bologna involving electric charges on frogs. A charge was applied to the spinal cord to a frog‚ and caused the frog to produce muscular spasms. The charges could make frogs jump even if the legs were no longer attached to the frog. Galvani believed that he was seeing animal electricity‚ the life force within the muscle of a frog (Corrosion Doctors). Galvani showed that nervous energy was electrical‚ but a Italian Anatomist named Camillo
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Brock McKinnon Feb. 12‚ 2004 Sales Ethics What are they and how can they be better Followed? To fully understand the nature of the question posed one must know the meaning of ethics. Webster ’s dictionary defines ethics as the philosophical study of the moral value of human conduct and of the rules and principles that ought to govern it; moral philosophy‚ the moral fitness of a decision‚ course of action‚ etc. Basically‚ I believe ethics is how one makes a decision according to the social
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isolated frog muscle could be made to contract when the sciatic nerve was irritated with a metal object‚ conducted the first muscle experiments between 1661 and 1665. Later‚ between 1737-1798 Luigi Galvani determined that frog muscle responded to electrical currents. The kymograph‚ which was invented in the late 1840’s lead to the revolution of experimental physiology because it enabled muscle contractions to be analyzed and recorded. The muscle cell or fiber is the basic unit of a muscle. The frog gastrocnemius
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under a microscope: the cell membrane‚ cell wall‚ nucleus‚ and the endoplasmic reticulum. Frog Blood: Analysis: 1. The shape of the frog blood cell was in a circle‚ or oval. The edges were a little irregular‚ but it could still be identified as‚ basically‚ a circular shape. 2. The cells were produced by an animal‚ a frog. 3. The cell wall was not present since the cell observed was from a frog‚ and animal‚ and only plants have cell walls‚ not animals. 4. The location of the cell
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explains that organisms that are more adapted to their habitat live longer and are more likely to pass on their traits through reproduction. For example‚ a green tree frog in a green rainforest would be more adapt than a gray tree frog. A green tree frog has the potential to blend in with the green surroundings‚ but the gray tree frog would be easily spotted by a predator and eaten due to its color and inability to camouflage. Also‚ an animal with minimal swimming skills would be less adapt to the
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Chapter 1 Farewell to Paradise Siva could see his grandfather through the window of the big kitchen. He seemed to be wandering aimlessly along the gravel paths. "Can I go out mum?" he called. "Not yet‚" his mother answered "your granddad has a few things on his mind; just give him a few more minutes." It was one of those days that occur frequently in hot season. A few hot days followed by a thundery build up of clouds resulting in a humid sticky
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second story titled hop-frog‚ Hop-Frog was the nickname they gave their jester‚ was a dwarf who had given gift to the king one of his generals with Timpiretta a very nice dwarf‚ the king wanted to have a party but the masks commo and its 7 ministers was too fat‚ could not easily get a costume is so ask helps Hop-Frog‚ whom the king vino.A forces him to drink wine Hop-frog him crazy‚ his friend beg the king to leave his friend alone but this will throw with wine in his face. Hop-frog was so furious that
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Deforestation‚ overpopulation‚ science and ethics‚ urban expansion and global warming are just five of the main reasons humans can be to blame for the extinction and endangerment of animals. I have researched about the following species‚ the Philautus poppiae frog native to Sri Lanka‚ the Asian elephant‚ the Siberian tiger‚ giant panda and the polar bear. Each species seems to be declining at a rapid rate‚ but why? Some would suggest that animal endangerment and extinction is a natural process‚ which to some
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is not known though is what effect a fairytale has on a person today. Bruno Bettelheim’s The Uses of Enchantment‚ reveals a revelation on the enormous value of fairytales. In order to support Bettelheim’s theories the fairytales The Princess and the Frog‚ The Little Mermaid‚ The Mouse Princess and The Seventh Father of the House have been analyzed. Theories similar to Bettelheim’s by psychologists Sigmund Freud‚ Renee Hall and Jack Zipes are used to describe the meanings and importance of these fairytales
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