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Search results 2471 - 2480 of 5332 matching essays
- 2471: Phosphorus: Chemical Reactions of Phosphorus and Its Importance
- ... used today in industrial waste treatment sights. The removal of phosphates is very important for if phosphates are not removed, they plague bodies of water by feeding algae which clog the surface waters and eventually effect every living and nonliving thing in that environment. Chemical Process: The reactions which occur are the following: Aluminum sulfate(alum) in combination with wastewater can flocculate phosphorus. The Flocculation that happens with aluminum sulfate addition ...
- 2472: Lab: Determining What Type of Stimulus Info is More Easily Remembered
- ... 4,5,6 there was one error made in each of them. In the last stimulus,7, there was 2 errors made in trying to remember what the stimulus was. This shows that the primacy effect where recognition is highest for the first item and lowest for the last item is clearly demonstrated in part one. In the second part of the lab, in which very meaningful words were used as ...
- 2473: Fusion Energy
- ... second. After trying these methods, most scientists now agree that the only way there is a net energy gain obtained is by mimicking the Sun, and producing starlike thermonuclear conditions. The goal of fusion--in effect, to make and hold a small star--is so daunting as to be widely considered the supreme technological challenge yet undertaken. In addition to an almost inexhaustible fuel supply, fusion has other attractive features: it ...
- 2474: The Influence Of Writers On Charles Darwin
- ... the necessary time frame in which the gradual process of evolution was possible. The skeletal remains of giant sloths and the various species of finches Darwin discovered in the Galapagos Islands supported his theory. In effect, Lyell had provided all the facts and evidence for evolution however it was the insight of Darwin that brought about its proof (Brent, 1981, p.380). Many scholars criticize Lyell for not being able to ...
- 2475: The Big Bang Model
- ... average density of matter forever. There are observational evidences found that can prove the Big Bang model is more reasonable than the Steady State model. First, the redshifts of distant galaxies. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed will have a shift to the red end. The faster the galaxy moves, the more shift it has. If ...
- 2476: Acid Rain: Cause and Effects and Issues
- ... hydroxide thus taking a longer period of time to react with sulfuric acid to neutralize the lake. The equation for the neutralization using limestone is as follows: Ca CO3 + H2SO4 ÄÄ> CaSO4 + H2O. iv) The effect of the Acid or excessive Base on the plant and animal life: You will probably find that there aren't many aquatic living organisms in waters that are excessively basic or acidic. A high acidic ...
- 2477: Virtual Reality - What it is and How it Works
- ... to move more than distant objects. This is called motion parallax. Lenticular screens can show users the proper stereo images when moving their heads well when a head-motion sensor is used to adjust the effect. Sound is another important part of daily life, and thus must be simulated well in order to create artificial reality. Many scientists including Dr. Elizabeth Wenzel, a researcher at NASA, are convinced the 3D audio ...
- 2478: Microwaves
- ... forms of electromagnetic energy (see diagram). Ordinary light from the sun is one, and the only one you can actually see. X-rays are another. Each kind, moving at a separate wavelength, has a unique effect on any matter it touches. When you lie out in the summer sun, for example, it's the infrared rays that bring warmth, but ultraviolet radiation that tans your skin. If the Earth's protective ...
- 2479: Current Status of Malaria Vaccinology
- ... of this disease is of the utmost importance. The disease is caused by one of four species of Plasmodium These four are P. falciparium, P .malariae, P .vivax and P .ovale. Malaria does not only effect humans, but can also infect a variety of hosts ranging from reptiles to monkeys. It is therefore necessary to look at all the aspects in order to assess the possibility of a vaccine. The disease ...
- 2480: Big Bang Theory
- ... average density of matter forever. There are observational evidences found that can prove the Big Bang model is more reasonable than the Steady State model. First, the redshifts of distant galaxies. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed will have a shift to the red end. The faster the galaxy moves, the more shift it has. If ...
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