.... severely modifies space and time near a black hole. As the horizon is approached from outside, time slows down relative to that of distant observers, stopping completely on the horizon. Once a body has contracted within its Schwarzschild radius, it would theoretically collapse to a singularity—that is, a dimensionless object of infinite density. Formation Black holes may form during the course of stellar evolution. As nuclear fuels are exhausted in the core of a star, the pressure associated with their heat is no longer available to resist contraction of the core to ever h .....

.... pulls away from another plate. In the Earth, hot currents of magma or molten rock may well up and crack the weakened crust above. As the crust cracks, blocks of rock rise or fall forming Fault-block mountains. Examples of these mountains are the Sierra Nevada in California and the Grand Tetons in Wyoming. Dome mountains are formed by the same kind of molten rock that forms Volcanic mountains. As magma comes up in a crack in the Earth’s crust, it does not come to the surface, but the molten rock pushes the ground up into a dome. Examples are Yosemite’s Half Dome, the Ad .....

.... for a given rate of force generation for humans is intermediate between that of birds and quadrupeds. These results support the idea that the costs of muscular force production determines the energy cost of running and suggest that bipedal runners use more energy for a given rate of force production because they require a greater volume of muscle to support their body weight. Key words: locomotion, energetics, bipedal, bird, muscle force. Introduction The question of wither more energy is required to run on two or four legs was addressed 100 years ago when Zuntz (1897) perform .....

.... Rod Steiger an Academy Award-winning actor who had starring roles in over 72 films is clinically depressed. During a time when Rod was down he wrote a letter to his wife and son: I want to die; I don’t want to move. I have no feeling for movement. To be left alone, to disappear. Not to be bothered with washing, shaving, talking, walking, going to the bathroom. If only to get out of this tunnel and heavy darkness, cold and oily, constantly pressing against my brain and being (Carter, 39) What would cause highly successful people like Rod Steiger, Kathy Cronkite, Patty Duke, even televisi .....

.... 2.6 x 10^6 years. 98Tc has a half-life of 4.2 x 10^6 years. The isomeric isotope 95mTc, with a half-life of 61 days, is useful for tracer work, as it produces energetic gamma rays. Technetium metal has been produced in kilogram quantities. The metal was first prepared by passing hydrogen gas at 1100C over Tc2S7. It is now conveniently prepared by the reduction of ammonium pertechnetate with hydrogen. Techne tium is a silvery-gray metal that tarnishes slowly in moist air. Until 1960, techne tium was available only in small amounts and the price was as high as $2800/g. It is now commercially .....

.... does not evolve or change in time. There was no beginning in the past, nor will there be change in the future. This model assumes the perfect cosmological principle. This principle says that the universe is the same everywhere on the large scale, at all times.2 It maintains the same 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 gala .....

.... skilled labor to the right. Changes in production techniques have widened across the country quickly, especially the multinational firms. Thus, if technological change is an important determinant of relative demand shifts, one would expect to observe patterns in other industrialized countries similar to those in the United States. Some of the recent studies report results for a variety of old industrialized (OECD) countries that are indeed consistent with the U.S. results (Collechia and Papaconstantinou, 1996; Machin, Ryan and Van Reenan, 1996). These countries vary a great deal with resp .....

.... drug users; and anyone in close contact with someone infected. This is not as scary as it seems, for you cannot contract the virus through sneezing, coughing, or holding hands. A surprising fact about hepatitis B, considering it is preventable, is that one in twenty people are or will be infected in their lifetime. There are one million people infected in the United States. More than 350 million people worldwide are chronic carriers of the virus. A chronic carrier is someone with the virus in their blood, and can who can pass the disease to others. Fifty percent of those .....

.... ulcer, usually one to three centimeters in diameter with a black necrotic (dying) area in the center of the ulcer. Lymph glands in the adjacent area may swell. About twenty percent of untreated cases of cutaneous anthrax will result in death (www.cdc.gov). Deaths are rare due to antimicrobial therapy. When anthrax is contracted by inhalation the initial symptoms resemble a common cold. After several days, the symptoms may progress to a severe breathing problems and shock. The inhalation of anthrax spores usually results in death one to two days after on set of acute symptoms. The intest .....

.... move to a higher level, it will require the right amount of energy. Electrons can move between different levels and between different materials but to do that, they require the right amount of energy and an "empty" slot in the band they enter. The metallic conductors have a lot of these slots and this is where the free electrons will head when voltage (energy) is applied. A simpler way to look at this is to think of atoms aligned in a straight line (wire). if we add an electron to the first atom of the line, that atom would have an excess of electrons so it releases an other electron which wi .....