.... The Earth’s escape velocity is seven miles per second(Intro. to Black Holes 1). This means that to leave the Earth’s gravitational pull, you must be able to travel at least seven miles per second(Intro. to Black Holes 1). To escape a black hole, your velocity must reach at least the speed of light(Intro. to Black Holes 1). Because the speed of light(186,000 miles per second) is not possible because you must have infinite force to achieve the speed of light, nothing can escape a black hole’s gravitational field(Intro. to Black Holes 1). This is why a black hole is .....

.... the Mantid's are classified in the Animal Kingdom. There is agreement that the collection of mantid species make up the Mantidae family of insects. The Mantidae family, in turn, is part of the order/suborder Mantodea that includes a variety of mantid-like species. But the existing literature does not reflect a clear consensus about what insect order Mantodea belong in. Some have placed Mantodea in the Dictyoptera Order-with the roaches. Others place Mantodea in the Orthoptera Order-with crickets and grasshoppers. Finally, some believe that Mantodea constitute their own independent or .....

.... core, combined from all the energy of the two gas clouds. This energy produced is so great when it first collides, that a nuclear reaction occurs and the gases within the star start to burn continuously. The Hydrogen gas is usually the first type of gas consumed in a star and then other gas elements such as Carbon, Oxygen, and Helium are consumed. This chain reaction fuels the star for millions or billions of years depending upon the amount of gases there are. The star manages to avoid collapsing at this point because of the equilibrium achieved by itself. The gravitational pull from t .....

.... which eventually becomes urine. Substances that do not filter through the Glomeruli wall continue through the Kidneys blood supply, allowing it to reenter the renal vein and inferior vena cava. On a normal basis only small molecular weights (such as sugars, fatty acids, water, etc.) Are filtered at the renal Glomeruli. Larger waste such as proteins and hormones do not normally filter through the glomular barrier. If the Glomeruli are damaged by an infection than substances, which are not normally filtered, will end up in the renal urinary tubules. This will allow the red blood cells t .....

.... penetration. Giant pandas are very cool looking animals. This is why we have to do everything we can to save them. The giant panda’s breeding season takes place from March to May. Then the baby pandas are born three to six months later weighing only eighty-five to one hundred forty grams. Two cubs may be born from one mother at the same time, but only one will survive. The reason for this is because one baby panda alone requires a lot of care and two is even harder so usually the mother chooses one and takes care of just that one. Environment: Wild giant pandas are found only in Sout .....

.... waves all moving along in unison. Lasers consist of several components. A few of the many things that the so-called active medium might consist of are, atoms of a gas, molecules in a liquid, and ions in a crystal. Another component consists of some method of introducing energy into the active medium, such as a flash lamp for example. Another component is the pair of mirrors on either side of the active medium which consists of one that transmits some of the radiation that hits it. If the active component in the laser is a gas laser than each atom is characterized by a set of energy states, o .....

.... At first Boyle was mainly interested in the facet of chemistry that dealt with the preparation of drugs, but soon he became genuinely interested in the subject and started to study it in great detail. His studies led him to Oxford where he joined such scientists as John Wilkins and John Wallis. Together in 1660, they founded the Royal Society of London for the Advancement of Science. From this point onwards, Boyle seriously undertook the reformation of science. For centuries scientists had been explaining the unknown with the simple explanation that God made it .....

.... the electron energy levels merge into bands. In electrical conductors, these bands are continuous but in insulators and semiconductors there is an "energy gap", in which no electron orbits can exist, between the inner valence band and outer conduction band [Book 1]. Valence electrons help to bind together the atoms in a solid by orbiting 2 adjacent nucleii, while conduction electrons, being less closely bound to the nucleii, are free to move in response to an applied voltage or electric field. The fewer conduction electrons there are, the higher the electrical resistivity of the materia .....

.... concentrated water to create enough energy to generate electricity. (World Book vol. 14, 586) plants generate only about eleven percent of the world's electricity. There are around 316 plants in the world that create 213,000 megawatts of electricity. (INFOPEDIA) Radioactive, or nuclear, waste is the by-product of nuclear fission. Fission occurs when atoms' nucleus' split and cause a nuclear reaction. (General Information) When a free neutron splits a nucleus, energy is released along with free neutrons, fission fragments that give off beta rays, and gamma rays. A free neutron from .....

.... confusion; the skin may be cold and clammy, dyspnea, cyanosis, a drop in blood pressure, and a drop in body temperature. A rapid and irregular pulse may also be a sign of a resent MI. In the beginning of the twentieth century, bedrest was the only thing that could be done for heart attacks. Then nitroglycerin was found to restore coronary circulation and relieve the pain. Digitalis was found effective for treating abnormal heart rhythms and diuretics were found effective to remove water, which reduced hypertension. With these and many other treatments, cardiology became one of the most dramat .....