.... lying behind a group of experimental laws (those that are empirically determined). The second is that a physical theory is simply an abstract system to classify and summarize a group of laws. Taking the first possibility (a belief still held by many today): this seeks to look beneath the sensible appearances and find the reality beneath, which is causing the sensations we experience. However, this presents us with a problem. We only have access to perceptions so how can we hope to find a physical theory that provides a certain explanation of the reality causing these sensations? A theory .....

.... the heart muscle itself, i.e., the coronary arteries. Like any other organ, the heart requires a steady flow of oxygen and nutrients to provide energy for rmovement, and to maintain the delicate balance of chemicals which allow for the careful electrical rhythm control of the heart beat. Unlike some other organs, the heart can survive only a matter of minutes without these nutrients, and the rest of the body can survive only minutes without the heart--thus the critical nature of these syndromes. Causes of blockage range from congenital tissue strands within or over the arteries to spasms o .....

.... and dissipates causing the end of the tornado. Tornados are the cause of great destruction and devistation in the area in which they occur. For example the Tri-State Tornado of 1925 occured in the Kansas, Oklahoma, and Texas States. This tornado was one of the largest tornados recorded in history. It killed nearly 625 people. However, the tornado which strikes closest to home has occured on what Canadians have come to know as "BLACK FRIDAY". The tornado of "Black Friday" touched down on July 31st, 1987 at 2:59 pm. (See appendix #2 for the torndo path). (See appendix #'s 4&5 fo .....

.... can be converted into strong and efficient nuclear energy and be used for many purposes. Nuclear power reactors generates heat that is converted into steam. The steam can be used directly for energy. This energy is used in transportation. Most military subs are now ran by nuclear energy. The most used purpose of nuclear energy can also be used to generate electric power for example in a commercial nuclear power plant. Another way to produce nuclear energy is by gas-cooled reactors with either carbon dioxide or helium as the coolant instead of water. This method is used mainly in commercial nu .....

.... by a process which involves the enzymatic conversion of human insulin's biosynthetic precursor, human proinsulin. The genetic coding for human proinsulin is inserted into the special E. coli bacteria which are then grown in a fermentation process to produce human proinsulin. With genetic engineering, new proteins are synthesized. They can be introduced into plants or animal genomes, producing a new type of disease resistant plants, capable of living in inhospitable environments. When introduced into bacteria, these proteins have also produced new antibiotics and useful drugs. Techniques o .....

.... redistributed by surface and convection currents. Without the ocean there would be no life on land. Most of Earth's living space, is ocean, about 97%. And also 97% of Earth's water is ocean. There is a greater variety of living creatures in the ocean than anywhere on land. Scientists say that (including microscopic creatures) there may be 10 to 100 million unnamed species on the ocean bed alone. And that it could take up to 5000 years to classify them. The sea is a very has a very important contribution to human life. We shouldn't take the services that it provides, for granted. L .....

.... reason, so all we can see of them is one of their eyes. (Mercury & Venus) Then there are three very weird people in the room that are always in the middle of the room doing the Waltz. They do this some how by themselves and they to are always winking. They are sometimes on the first floor and sometimes on the second floor. (Mars, Jupiter, and Saturn) There is also one guy dressed in a white polyester leisure suit, gold chains, and rings dancing to "Stayin' Alive." (comet) It seems as though everyone in the universe hears their own music. He is only in the room for a little bit; he ma .....

.... is the amplitude or in other words the maximum possible displacement w is the angular frequency and f is the phase constant or phase angle and has units of radians per second. The phase constant determines the position of the particle at time t = 0. The quantity (wt+ f) is called the phase. The above function x repeats itself whenever wt = n2p where n is an integer. The period T of the motion is the time it takes for the motion to complete one revolution or cycle. The unit for the period T is seconds. Since the function repeats itself every period T for any time t and it has .....

.... its users, primarily because of the psychoactive mind altering ingredients called Delta - 9 - Tetrahydrocannabinol, or THC. It is the THC content found at various concentration in different parts of the plant, which determines the potency. The THC content is controlled by plant strain, climate, soil conditions, and harvesting, in 1975, the average confiscated sample of marijuana contained 0.4 percent of THC, in 1979 the content was about 4 percent and in the 80's about 7 percent, "today the THC content goes up to about 40 percent" (Woodard 42). This high potency marijuana is gr .....

.... and less extensive of the others. It can hold memory for only an instance (Memory p. 32). Suppose you see a tree , the image of the tree is briefly held by the sensory memory and quickly disappears unless you transfer it to your short-term memory (Rhodes p. 130). The next level is called short-term memory. The image or fact can be held as long as the brain is actively thinking about it (Loftus p. 392). For example , if you look up a number in the phone book and repeat it to yourself until you dial it , that is a form of short-term memory. Short-term memory lasts roughly half a minute unless i .....