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Fiber Optics

... Fibre Optics Fibre-Optic Bundles Coherent and Incoherent Bundles Transimission efficiency and resolution Types of Fibres: Single mode or Multimode ? Fibre Properties Fibre-Optic Endoscopy Introduction The Fibre-Optic Endoscope Some Applications for Fibre-Optic Endoscopy References Fibre Optics A relatively new technology with vast potential importance, fibre optics, is the channelled transmission of light through hair-thin glass fibres. The clear advantages of fibre optics are too often obscured b ...

Number of words: 2237 | Number of pages: 9

Black Holes

... of a planet. You throw a rock straight up into the air. Assuming you don't throw it too hard, it will rise for a while, but eventually the acceleration due to the planet's gravity will make it start to fall down again. If you threw the rock hard enough, though, you could make it escape the planet's gravity entirely. It would keep on rising forever. The speed with which you need to throw the rock in order that it just barely escapes the planet's gravity is called the "escape velocity." As you would expect, the escape velocity depends on the ...

Number of words: 3663 | Number of pages: 14

Kangaroos

... canguru (sometimes called M. giganteus or M. major); the wallaroo, M. robustus; and the red kangaroo, or red flyer, M. rufus. The best-known species, the gray kangaroo, is found mostly in open forests of eastern and southwestern Australia and Tasmania. It is long-haired and silvery gray in eastern coastal regions but short-haired and dark gray inland. The red kangaroo, which is found throughout Australia's interior grasslands, is the largest and most powerful species. A male may attain a head-body length of 1.5 m; have a tail 1 m long; s ...

Number of words: 1056 | Number of pages: 4

Early Health And Medicine

... a a common cold or simply yet one did'nt even know what a germ even was. Louis Pasteur (1822-1895) was the famous French scientest who first discovered germs, and that they were the main cause of most diseases. After Pasteur's significant discovery people began to be much more conscious of their personal hygiene. Such as, brushing their teeht and bathing more persistently. Pastuer opened the doors to a series of new remedies and discoveries. Some of these would include pasteurized milk(you can see where it received it's name), bacteria, ferm ...

Number of words: 419 | Number of pages: 2

Energy Flow Systems

... labor is energy; so are the calories that are stored as fat by salmon for their journey upstream.” White notes that energy is as concrete as salmon, human bodies, and the Grand Coulee Dam. White wants his readers to think about nature and its relationship with humanity. White explains how the river is energy. The Columbia River works as gravity pulls it to the Pacific Ocean. The Columbia is continuously cutting into the terrain that it flows through. Over millions of years water rushed through the Columbia Basin to form the Columbia R ...

Number of words: 1419 | Number of pages: 6

Nuclear Power In Ontario

... between Atomic Energy of Canada Limited (AECL), Ontario Hydro and Canadian General Electric to build Canada’s first nuclear power plant called NPD for Nuclear Power Demonstration. In 1962, NPD began supplying the province of Ontario with its first nuclear generated electricity. Ontario had found it’s new source of electricity, and they were not fully aware consequences that would happen after many years of use. Power projects (later AECL CANDU), based in Toronto. Ontario and Montreal, Quebec became responsible for implementi ...

Number of words: 1130 | Number of pages: 5

El Nino

... well as local conditions. It has been linked to floods and droughts all over the world. Hurricanes and tropical storms are also altered in their numbers by . Therefore it would be very helpful for people if could be predicted and prepared for in some form. During a cycle there are many biological changes. Due to a depressed thermocline there is less photosynthetic activity resulting in a decrease in the primary life forms that form the beginning of the food chain. The warmer waters that are brought by these changing cycles hold less ...

Number of words: 2243 | Number of pages: 9

Air Pollution

... homes in the U.S. harbor radon concentrations that are high enough to pose a risk of lung cancer. Each year industrially developed countries generate billions of tons of pollutants. The level is usually given in terms of atmospheric concentrations or, for gases in terms of parts per million, that is, number of pollutant molecules per million air molecules. Many come from directly identifiable sources; sulfur dioxide, for example, comes from electric power plants burning coal or oil. Others are formed through the action of sunlight on pr ...

Number of words: 726 | Number of pages: 3

Cloning, Right Or Wrong

... increase numbers of animals on the endangered species list. Biological proteins would be able to be produced to cure people with diseases like diabetes, Parkinson’s and Cystic Fibrosis. Pigs could be cloned to produce organs that would not be rejected by humans. Cloning could give couples who would like children, but could not have any, a chance to have them. This process would also let single women have a child without using in-vitro fertilisation or artificial insemination. Cloning could also make a copy of a deceased child for the pa ...

Number of words: 894 | Number of pages: 4

My Theory Of The Universe

... starts at one end of the light, works its way across, and then works its way back. (Phases of the Moon) There are many spots on the walls of the room that are just reflections off of the disco ball. (Stars) These spots seem to form different patterns on the walls and move along with the disco ball, but not always at the same rate. (Constellations) There are two very shy people in the room that sometimes leave the room. When they are in the room they stand by the walls and always wink for some reason, so all we can see of them is one of t ...

Number of words: 553 | Number of pages: 3

Multiple Sclerosis

... secondary-progressive, and primary relapsing (Kalb 5). The type that my step mom has is primary-progressive, which is considered the worst type of MS. According to the National Society a person with primary-progressive MS is “characterized by a gradual but steady progression of disability from the onset, with no obvious plateaus or remissions, or only occasional plateaus and minor, temporary improvements.” In short this means that the symptoms Kathy is experiencing such as falling down due to a lack of coordin ...

Number of words: 816 | Number of pages: 3

How Toxic Waste Affects Canada’s Natural Environment

... mixed up with non-toxic garbage (decomposables). That 15% may not seem like very much, but when you consider the millions of tons of toxic waste that we produce every year, that 15% is enormous. The Environmental Protection Agency (EPA) estimates that we produce one ton of toxic wastes for every single person living in Canada every year. That means that the 15% represents about 4.2 million tons of toxic waste. Toxic wastes, which are dumped in improper sites, can seep into underground water supplies and contaminate huge areas. If the ...

Number of words: 732 | Number of pages: 3

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