... helps the comet to absorb heat, which causes some of the ices under the crust to turn to a gas. Pressure builds up underneath the crust and causes the surface to bubble up in some places. Eventually, the weak spots of the crust break open from the pressure, and the gas shoots outward; this is referred to by astronomers as a jet. Dust that had been mixed in with the gas is also pushed out, and as more jets appear, a small gas and dust shell forms around the nucleus, and this is called the coma. The coma, also called the head, is a dense cloud of water, carbon dioxide and other gases and comes off of the nucleus. They can be several thousand kilometers in diamete ...
... distance by which two lines can be separated and still be perceived as two lines. "During the day, the earth has a predominantly bluish cast..... I could detect individual houses and streets in the low humidity and cloudless areas such as the Himalaya mountain area.... I saw a steam locomotive by seeing the smoke first..... I also saw the wake of a boat on a large river in the Burma-India area... and a bright orange light from the British oil refinery to the south of the city (Perth,Australia.)" The above observation was made by Gordon Cooper in Faith 7 [1963] and which generated much skepticism in the light of the thesis by Muckler and Narvan "Visual Surve ...
... .30-06 packs about 1300 ft./lbs. of energy at 400 yards. Although, at 400 yards the drop is almost 50 inches; most hunters prefer this one compared to other rifles because of its versatility and accuracy. The expansion is also good, depending on the type of shell tired-used. The kick and distance of the gun are considered to be wonderful because the kick is normal and the distance is better than normal. The .270 rifle is a reasonably good rifle. This rifle is mainly used in open field shooting as opposed to in brush shooting. The depth and the expansion work together and turn out to be great, especially if soft pointed shells are used. The kick and the distanc ...
... urban areas of the Americas, Ausrtalasia and Western Europe. Aids was and is spread still through infected hypodermic needles which drug abusers are affected by, but also through transfusion of the blood and its components. And sadly, whenever a mother is infected, the unborn child will almost positively receive the virus before, during, or after the pregnancy. The viruses which cause AIDS, otherwise known as Human Immunodeficiecy Viruses(HIV) were first discovered in 1983 cooperatively by Dr. Robert Gallo of the National Cancer Institute and Dr. Luc Montagnier of the Pasteur Institute in France. Aids is caused mainly by the HIV-1 virus, while the HIV-2 ...
... rationalizing the addiction, because they know, it might hurt to quit. They know that there will be a sense of loss. They know that smoking is as much a part of their personality as being a happy person, or being a morning person, or liking to go to the movies. Smoking becomes a part of who and what you are, An addict. It amazes me the number of people who smoke cigarettes who would never smoke a "marijuana" cigarette. They say "Oh no, that’s drugs" or "I’m not a dope fiend". Sorry pal tobacco is a drug and if you're a smoker, you are also a drug addict. The sooner you accept it, the sooner you will be able to get well again and kick the habit. Smo ...
... can be caused by runoff, hurricane waves, tsunami (seismic sea waves), and hurricane rains. Coastal flooding can not only take part on oceans but it can also take part on lakes. Coastal flooding can be a great danger because coast lines are very densely populated areas. In the United States in the early 1990's 50% of the population was on a coastal county.1 Although they shrink before reaching shore, wind generated waves have been spotted to be as high as 30 m (100 ft) in the middle of the ocean.2 In 1970 a major storm in the Bay of Bengal produced heavy seas that flooded regions of East Pakistan, killing about 200,000 people.3 River flooding can happen ...
... Kenneth Arnold spotted something that would change his life forever. Just north of his position flying at an altitude of 9,500 feet and an unprecedented airspeed of 1,700 mph he spotted nine circular aircraft flying in formation. According to his estimate the aircraft were approximately the size of a DC-4 airliner ( Jackson 4). This account was the first sighting to ever receive a great deal of media attention. This sighting gave birth to the phrase "flying Saucer" coined by a reporter named Bill Begrette. Although not the first UFO sighting in history, Kenneth Arnolds account is considered to be the first documented UFO sighting. The followi ...
... is forced to rotate with the black hole; in principle, energy can be emitted from the ergosphere. According to general relativity, gravitation 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 th ...
... the experiment with the milk jug and the hot water is that the milk jug will remain the same. 3) the experiment with the egg and the bottle is that the egg will not be sucked in the bottle. PROCEDURE: For the first experiment the procedure is: 1) Heat an ordinary pop can on a hot plate. 2) After about fifteen minutes take the can off the hot plate and put it upside-down in a pan of cold water. 3) Record my observations on a piece of paper. 4) Write my conclusions in my science fair logbook. For the second experiment my procedure is: 1) Get an empty gallon milk jug at room temperature. 2) Heat to water to just before the boiling point on a ...
... have been found in eastern africa and have been dated between 4.5 million and 1.1 million years old. There has also been evidence that the australopithecus "man" lived in australia where fossils have also been found. The first discovery of an australopithecus fossil was made in 1924. The body of the australopithecus is smaller than humans, but biffer than chimpanzees. Also, The brain size of australopithecus is bigger than humans at about 475 cubic centimeters. This is also biffer than the chipanzees, but the brains were not developed in most areas. For example speech. The australopithecus species all had mostly the same features with a low forehead, a "bo ...
