Essay Database

… thought about going to the moon or going to other planets. In the old days traveling in space was just science fiction that was just found on TV shows or the movies, but now it is reality. Most of the space technology that was made had to evolve…

… about an hour later each day. Since the Moon passes overhead about an hour later each day, it was long suspected that the Moon was associated with tides. Newton's Law of Gravitation provided a quantitative understanding of that association. Differenti…

… received a series of two shots. They were told to protect them from anthrax. These inoculations were never recorded in their medical records. They were even told by the medical staff that these shots were experimental and non-FDA approved.…

… Discrete data Abstract: Spacial database systems offer the underlying database technology for geographic information systems and other applications. Several terms have been used to describe database systems offering such support, including…

… 4th , 1957, at the Soviet Union's Embassy in Washington, DC, to be anything out of the ordinary. It was the appropriate climax of a week-long set of international scientific meetings. It was also, in the cynical Cold War world of international…

… how were all those stars created? Many astronomers have asked themselves that same question for centuries, but now we have an answer to most of the puzzle. As our knowledge of stars and the universe expands, the puzzle of how stars were created…

… a great role in astronomy. These compact stars are very different from familiar objects like our sun. They also pose a seemingly endless series of puzzles, whose solutions provide new insights into many areas of physics and astronomy. To unravel…

… from a star. White light is the composition of all colors. In elements, the energy discharge can be displayed as light. Just by looking at the colors that are discharged, one may precisely identify the element. In understanding the universe, the…

… atmosphere, which causes a bright flash of light. When lighting goes through the air, it heats the air to degrees hotter than the sun's surface about 50,000 degrees fahrenheit. This heating causes the air to expand and contract. This causes the sound…

… heat energy into mechanical energy, using steam as the conversion medium. When water is boiled into steam its volume increases about 1,600 times, producing a force that can be used to move a piston back and forth in a cylinder. The piston is attached…