All sound waves have three main physical characteristics; frequency, amplitude, and wavelength ( ldblquote Notes on: The Physics of Sound dblquote par 3). ... Therefore, a frequency of 50 hertz is the same note only at a high er pitch because of its number of cycles per second. This also illustrates the concept of an octave, or a note whose frequency is a 2:1 ratio with another frequency (Henderson par 29-30). ... Amplitude can b e defined as the amount of motion that the air molecules of the sound wave undergo. ... It is the determining factor of how far the sound actuall...

• Word Count: 3743
• Approx Pages: 15
• Grade Level: High School

The artistic community was called into action, producing whole schools of painting, which glorified the development of the nation. ... Until 1983, the only things that evoked its existence were a note in Cole's list of topics, an entry in the Cole memorial exhibition catalogue and the existence of a small draft and a few drawings. ... It combines the different steps of America's steady shift from wilderness to civilization into one single picture. ... As Albert Boime says, "inevitably, the extermination of Native Americans is tied to the conquest of the wilderness and its transfor...

• Word Count: 3252
• Approx Pages: 13
• Grade Level: Undergraduate

Some actually think that these cursed elements of air help rather than hinder the earth! ... The most debated of the gasses, Fluorocarbons (CFCs), now come into view. ... They claim instead that the ozone only thins from its peak from time to time(Howard). ... Don't fall into the greatest scam of this country. ... CFCs come from commonly used items such as aerosol cans, refrigerators, and air conditioners. ...

• Word Count: 4635
• Approx Pages: 19
• Grade Level: High School

There is a slight breeze, the air is brisk, the sun is high in the sky and feels wonderful. ... The air from the surface is funneling through the tunnel, I pray that the air contact doesn't damage anything important. ... I decided take Eye Images and notes of the room before I start extracting and examining artifacts tomorrow. ... I divided the containments of the urn into five separate Strata-Levels. ... The most interesting is a nearly decayed hollow, thin cylinder, enclosed at both sides with the exception of one side having a hole. ...

• Word Count: 2637
• Approx Pages: 11
• Grade Level: High School

I wondered what God breathed into me. ... Before transatlantic slavery, Caribs the indigenous inhabitants of the Caribbean islands had their own slaves, who were forced into slavery mainly due to what we would now consider to be classism. ... Toomer describes his characters as having 'hair - braided chestnut',17 'mat[ted]' hair18 and 'hair [that] thins'19. ...

• Word Count: 3347
• Approx Pages: 13

By 1960 Hoffman Electronics expanded business solar cell efficiencies to as much as 14% and today scientists have created cells with more than 20% efficiencies. 20% effective implies that out of the aggregate energy that hits the surface of a solar cell, around 20% is changed over into usable power. ... In 1958 the Vanguard I, was propelled into space. ... This included further research into renewable sources, for example, solar force, wind force and geothermal force. ... Working Photovoltaics is the immediate change of light into power at the nuclear level. ... In parallel, Oxford scienti...

• Word Count: 3137
• Approx Pages: 13
• Has Bibliography
• Grade Level: Undergraduate

Grad and grind both suggest that he is "grinding" the facts into these children's minds. ... Gradgrind is described as having a "square wall of a forehead", and as having a " mouth, which was wide, thin and hard set". ... It is already very visible in her youth when she stares into the fire; ""Tom, inquired his sister, slowly, and in a curious tone, as if she were reading what she asked, in the fire, and it were not quite plainly written there". ... Another way in which he is a hypocrite is his presenting himself as being an advocate of utilitarianism, yet when he speaks of his childhood ...

• Word Count: 2948
• Approx Pages: 12
• Grade Level: High School

The island paradise quickly collapses into a chaotic, horrible scene. ... As the colonialist extended their political influence into these regions, they were charged to spread European culture as well ("The Berlin Conference: The General Act of Feb. 26, 1885-, http://www.jjay.cuny.edu/~jobrien/reference/ob45 .html). Conrad witnessed this expansion when he himself traveled into the Congo in 1890 (Joseph Conrad (1857-1924)). ...

• Word Count: 4223
• Approx Pages: 17
• Grade Level: High School

Over the years Auschwitz began to expand into three separate parts. ... At first the prisoners were forced to line up into two lines. ... At best, lunch included three cups of thin turnip or potato soup. ... This type of insecticide came in the form of chalky pellets, which would release poisonous gas when exposed to air (Lawton 22). ...

• Word Count: 2963
• Approx Pages: 12
• Has Bibliography
• Grade Level: High School

During their time together, Trudeau and Chrétien clocked countless political kilometers together, helping shape Canada in ways both positive and negative, into what it is today. ... Trudeau and his cabinet also entrenched the Charter of Rights and Freedoms into the Constitution Act. ... In April 1981, the opposing Premiers allied themselves into the so-called "Gang of Eight."" ... They wanted the Constitution to say that a provincial legislature could override the Charter of Rights and Freedoms by inserting a paragraph into any bill acknowledging that it was contravening to the Chart...

• Word Count: 4400
• Approx Pages: 18
• Grade Level: High School

Walker was a disgruntled southerner who thought that the United States should annex Central America and turn it into a slave state. ... Not to be discouraged, he next invaded Panama, where he briefly seized control before being forced to flee--into Costa Rica. ... Less than 2% of the population is Black, except in the thinly populated Caribbean province of Limon. ... Note that the literal translation of Indian is Indio, which is an insulting term to Costa Rica's indigenous inhabitants. ... Other groups- the Chorotegas, Cabecares, Terrabas and others- have been wither assimilated into the ...

• Word Count: 4130
• Approx Pages: 17
• Grade Level: Undergraduate

"Jewels & Women; The Romance, Magic and Art of Feminine Adornment" Marianne Ostier, Horizon Press, New York, 1958 LIP LABRET PIERCING HISTORY The piercing of the lips for the insertion of objects into them is very widely practised throughout the world, however only two tribes pierce the lips with a ring; the Dogon tribe Of Mali, and the Nuba of Ethiopia. ...

• Word Count: 5222
• Approx Pages: 21
• Grade Level: High School

In addition - and this is what the dopant does - charge carriers in the form of extra electrons or -holes- have to be injected into the material. ... Though the resulting material was highly crystalline and of regular structure, it was a black, air-sensitive, infusible and insoluble powder. Ziegler-Natta polymerisation was developed for polymerising alkenes such as ethylene by inserting an unsaturated molecule into the carbon-titanium bond of the growing macromolecule. ...

• Word Count: 6720
• Approx Pages: 27
• Grade Level: High School

Born on May 8, 1941, in Youngstown Ohio, James A. Traficant Jr. grew up and graduated from Cardinal Mooney High School in 1959 in Youngstown Ohio. In 1963, James received a Bachelor of Science from the University of Pittsburgh in Pittsburgh Pennsylvania. James also received his Master of Science at the University of Pittsburgh in 1973 and another Master of Science degree in 1976, from Youngstown State University in Ohio. He became the executive director of Drug Program Inc. in Mahoning County, Ohio from 1971 to 1981. ...

• Word Count: 4285
• Approx Pages: 17
• Grade Level: High School

ion, and hold it to be a usable notion for Christians; but hawing defended elsewhere a physicalist conception of survival of death through resurrection, I will discuss it no further here. 1Another option is to collapse talk of resurrection into talk of the immortality of the soul. ... I call the theory temporary disembodiment because it envisions the following scenario: We human beings are born, live for a time as psycho-physical beings, and then die; after death we exist in an incomplete state as immaterial souls; and some time later in the eschaton God miraculously raises our bodies from the...

• Word Count: 10695
• Approx Pages: 43
• Grade Level: High School

Substances are diverse: air, water, rock and wood are all substances. Most substances can be broken down into other substances by chemical means. Any substance that cannot be broken down into other substances by ordinary chemical means is called an element. ... If we divide an atom of gold into smaller subunits, we get electrons, neutrons and protons. ...

• Word Count: 10700
• Approx Pages: 43
• Grade Level: High School

He stumbles across the sow's head, the "Lord of the Flies," now merely a gleaming white skull-as white as the conch shell, he notes. ... Several boys try to break into the thicket by rolling a boulder, but the thicket is too dense. A group of boys tries to fight their way into the thicket, but Ralph fends them off. ... Free from the rules and structures of civilization and society, the boys on the island in "Lord of the Flies" descend into savagery. As the boys splinter into factions, some behave peacefully and work together to maintain order and achieve common goals, while others rebel ...

• Word Count: 11237
• Approx Pages: 45
• Grade Level: High School