Light Emitted From

Lasers
Lasers
Lasers The light from lasers differs from ordinary light in several important aspects. Ordinary light from a light bulb travels randomly in all directions (unless the bulb is equipped with an integral reflector that directs the light). The light is thus incoherent. Even when incoherent light is directed with a reflector, it still spreads rapidly. The light from a laser is temporary and spatially coherent. This means that all of the wave-fronts of light are lined up in time and space (see Diagra
The Greenhouse Effect
The Greenhouse Effect
The Greenhouse Effect The greenhouse effect is an increase in the atmospheric temperature caused by increasing amounts of greenhouse gases. These gases act as a heat blanket insulating the Earth's surface absorbing and trapping heat radiation which normally escapes from the earth. They include carbon dioxide, water vapor, methane, nitrous oxide, CFC's, and other halocarbons. The earth's atmosphere goes through two processes constantly. Global cooling is the first process. This process uses the
Neutrinos And Gamma Rays
Neutrinos And Gamma Rays
Neutrinos and Gamma Rays Emission of a beta particle produces an energy change in the nucleus of an atom. The energy change that is observed, however, does not add up to satisfy the Law of Conservation of energy. The conservation law can be balanced if another particle, called the neutrino is part of this process. In the time it takes to read just this sentence, more than a billion of them will have passed unnoticed through the reader's body. Neutrinos may account for an appreciable portion of
Plutonium Bomb
Plutonium Bomb
Plutonium Bomb /\ / \ | : ||: : | | : ||: : | | : ||: : | | : ||: : | | : ||: : | | : ||: : | | : ||: : | | : ||: : | | : ||: : | | : ||: : | | : ||: : | | :______||:_____________________________: | |/_______||/______________________________\| \ ~\ | : |:| / \ |\ | : |:| / \ | \ | :__________|:| / \ |:_\ | :__________\:| / \ |___\ |______________| / \ | \ |~ \ / \|_______\|_________________\_/ |_____________________________| / \ / \ / \ / _______________ \ / ___/ \___ \ /____ __/ \__ ____\ [3]_
Astronomers
Astronomers
Astronomers Part One Brief Descriptions of the Following Astronomers: Walter Baade : Baade was a German-born American, whose work gave new estimates for the age and size of the universe. During the wartime, blackouts aided his observatons and allowed him to indentify and classify stars in a new and useful way, and led him to increase and improve Hubble's values for the size and age of the universe (to the great relief of geologists.) He also worked on supernovae and radiostars. Milton Humason :
Urban Heat Islands
Urban Heat Islands
Urban Heat Islands For more than 100 years, it has been known that two adjacent cities are generally warmer than the surrounding areas. This region of city warmth, known as an urban heat island, can influence the concentration of air pollution. The urban heat island is formed when industrial and urban areas are developed and heat becomes more abundant. In rural areas, a large part of the incoming solar energy is used to evaporate water from vegetation and soil. In cities, where less vegetation a
Auto Wreck
Auto Wreck
Auto Wreck Philosophers have pondered the meaning of life and death since the beginning of time. There are many hypotheses. From reincarnation to Valhalla-then on to heaven. There have been many proposed solutions. Yet no one fully understands dea th. In Shapiro's poem Auto Wreck, he illustrates the irrationality of life for it can be taken away at any given time for no rational reason. Shapiro uses metaphors to emphasize the fantasy-like and wild setting of the auto wreck. The following is an
Thomas Edison
Thomas Edison
Thomas Edison Thomas Alva Edison is considered one of the greatest inventors in history. He was born in Milan, Ohio on February 11, 1847 and died in 1931. During his life he patented 1,093 inventions. Many of these inventions are in use today and changed the world forever. Some of his inventions include telegraphy, phonography, electric lighting and photography. His most famous inventions were the phonograph and the incandescent light bulb. Edison did some of his greatest work at Menlo Park. Whi
THE DESTRUCTION OF MAN KIND
THE DESTRUCTION OF MAN KIND
THE DESTRUCTION OF MAN KIND We know there will be problems in environmental terms, manyserious problems, but it is a matter of economics. There won't be anycomplete disaster, and what we cannot solve, well, that's the price we haveto pay. - Eduardo Albuquerque Barbosa There is a constant war that is being fought in the rainforests ofSouth America. The death toll is one that far surpasses any other war inhistory. Vietnam and World War II had minimal loss of life compared to thisnever ending ba
The Manhattan Project
The Manhattan Project
The Manhattan Project On the morning of August 6, 1945, a B-29 bomber named Enola Gay flew over the industrial city of Hiroshima, Japan and dropped the first atomic bomb ever. The city went up in flames caused by the immense power equal to about 20,000 tons of TNT. The project was a success. They were an unprecedented assemblage of civilian, and military scientific brain power?brilliant, intense, and young, the people that helped develop the bomb. Unknowingly they came to an isolated mountain s