The electrical resistivity of a metal arises from the interactions of the conduction electrons with impurities‚ defects and the vibrating ions of the lattice. As the temperature is lowered‚ the amplitudes of the lattice vibrations diminish‚ so one would expect the resistivity also to decrease gradually toward a small‚ but finite‚ value determined by the impurities and defects. This behavior is manifested by many materials. In 1911 H. Kamerlingh Onnes discovered that as the temperature of mercury
Premium Superconductivity
Tourism is global phenomenon that has evolved tremendously in the past century. These transformations have depended on and benefited from the emergence of Western Capitalism and capitalist economies (Chambers 2010: 15). Initially restricted to the tourism of the “preserve of elites” (Urry 1991: 4) the “Grand Tour” has over time become an easily accessible universal experience‚ defining the characteristics of the modern man and consequently is the “largest industry in the world” (Urry 1991: 5). Although
Premium Tourism
Expository Essay Notes Questions/Titles Notes/Answers 1. Expository Essay This type of essay defines a term‚ explains why something happens or tells how something happens. For FCAT you will be graded on four main categories: Focus Organization Support Conventions 2. Example Prompt Writing Situation: Most teens have an out-of-school activity that they enjoy. Directions for Writing: Think about one activity that you enjoy. Now write to explain why you particularly enjoy that activity
Free Writing
Haiti Earthquake The earthquake that devastated Haiti Tuesday was the strongest temblor to hit the island nation in more than 200 years. The magnitude 7.0 quake caused tremendous damage‚ and the death toll may run into the thousands. What caused the Haiti earthquake‚ and why was it so devastating? What caused the earthquake? The shaking started on Tuesday‚ Jan. 12‚ at 4:53 p.m. ET in the Haiti region‚ just 10 miles southwest of Port-au-Prince. The Haiti earthquake occurred at a fault that
Premium Earthquake Haiti
Great Sichuan Earthquake. It was a once-in-a-year strong earthquake registering a magnitude of 7.8 measured in the Richter scale. The province where the earthquake took place‚ Sichuan‚ is in western China and its capital is named Chengdu. It is surrounded by the Sichuan Basin. In the Great Sichuan earthquake‚ the epicenter was in Wenchuan County‚ Ngawa Tibetan and Qiang Autonomous Prefecture‚ which is 80 km north-west of Chengdu; and its depth was 19 km. On May 12‚ 2008‚ the earthquake occurred at
Premium Earthquake
disaster is the occurrence of a sudden or major misfortune which disrupts the basic fabric and normal functioning of society or community. In January 2010 earthquake that struck Port-au-Prince‚ Haiti caused>200‚000 deaths thousands of injuries requiring immediate surgical interventions‚ and 1.5 million internally displaced survivors. The earthquake destroyed most medical facilities in the city seriously preventing the ability to deliver immediate help. Community nurse can help assist with all types
Premium Haiti Earthquake Hazard
Ancient Egyptian Tattoos Brooke Campbell COM/150 June 27‚ 2010 Bill Wilke Egyptians are highly known for their glorious pyramids‚ powerful pharaohs‚ and endless amounts of gold and jewels. When we think of Egyptians we also think of tombs‚ curses‚ and cats being a source of protection. However‚ it is not known to many that they have not only defined the art‚ but also the meaning behind tattooing. Tattoos are the one thing still captured on the bodies of mummies‚ in which were discovered from
Premium Ancient Egypt Egypt Egyptians
When in a difficult situation‚ ordinary people can act in very extraordinary ways. People can do amazing things when faced with a challenge and when they have opposing views and opinions. It is definite that ordinary beings can truly achieve outstanding things‚ such as the people from Correnderrk; the First Australians‚ Once Brothers and Helga weiss. The First Australians is about a group of aboriginal Australians called the Correnderrk people‚ from the Wurrendjeri clan. They had to fight indefinitely
Premium Indigenous Australians Serbia
Chloe Mr. Lesandrini AP English 11 Language and Composition 10 December 2012 “Witch Hunt” Expository Essay A witch-hunt is not limited to one particular event in history. Many key events throughout time relate very closely to these acts of misunderstanding and unjustified killings. For instance‚ The Crucible by Arthur Miller was written to portray the Salem Witch Trials in a fictional view although based on true events. Miller in fact based this play after Joseph McCarthy’s Red scare
Premium Salem witch trials Salem, Massachusetts The Crucible
Earthquake in Haiti Earthquake in Haiti Introduction Introduction A little over 2 years ago Haiti was struck with a horrendous earthquake that caused a lot of damage. The earthquake in 2010 was a defining moment for Haiti because it had a huge impact on them then and still does today. The earthquake left Haiti in ruins. The impact of this 7.0 quake will have a huge impact for many years to come. People have many questions but do we have all the answers? An earthquake is
Premium Plate tectonics Earthquake Earth