doi:10.1038/nature07378 L ETTERS Correlation between nanosecond X-ray flashes and stick–slip friction in peeling tape Carlos G. Camara1*‚ Juan V. Escobar1*‚ Jonathan R. Hird1 & Seth J. Putterman1 Relative motion between two contacting surfaces can produce visible light‚ called triboluminescence1. This concentration of diffuse mechanical energy into electromagnetic radiation has previously been observed to extend even to X-ray energies2. Here we report that peeling common adhesive tape in a
Premium X-ray Light Electromagnetic radiation
Cathode ray tube is used for producing images‚ when an electron beam hits the surface made out of a phosphorescent‚ and the cathode ray tube is basically a vacuum tube. An example of a cathode ray tube is a computer desktop and the picture tubes in television are similar to the cathode ray tube in television. There are numerous components of cathode ray tube‚ which are the Electron gun‚ Anodes‚ Coil‚ Phosphor-coated screen‚ electronic beam and the spot through which the beam passes through. In a
Premium Cathode ray tube Electron
expeditions was the Lewis and Clark expedition. Although Lewis and Clark did not technically “find” anything‚ the expedition was important to American history and helped people gain knowledge and provided individuals with inquisitiveness of what was in the West. The knowledge gained through the expedition‚ helped improve the colony’s knowledge and helped lead to even more important advances in American history. Lewis was born on August 18th‚ 1774 and Clark was born on August 1st 1770. Lewis’ family had
Premium Lewis and Clark Expedition
as a slave‚ Joseph Vance Lewis would receive his greatest gift just ten years later: his freedom. Surpassing what he was told was unattainable for him because of the color of his skin; JV Lewis became an educator and lawyer. He was later admitted to the Supreme Court where he was soon recognized as the first African-American lawyer to win a case before a Harris County jury in favor of a black client accused of murder. This case and many other accomplishments made by JV Lewis are highlighted in his
Premium Martin Luther King, Jr. United States Southern United States
mention the name John Lewis is an image of a high street retail giant. Indeed the John Lewis Partnership is one of the UK’s top ten retail businesses with 27 John Lewis department stores and more than 166 Waitrose stores‚ the upmarket supermarket chain owned by the partnership‚ in Great Britain. The first store opened in Oxford Street London in 1864 with the first branch of the Waitrose chain opening in 1904. But for many‚ what may be an unknown detail about the John Lewis Partnership is that it
Premium United Kingdom Corporation English-language films
Lewis Acids and BasesLewis acids and bases play an important role in chemical reactions because‚ except oxidation-reduction reactions‚ almost every reaction could be categorized as an acid-base reaction. Bases in water solutions show certain specific characteristics: bitter taste‚ feel slippery‚ and turn litmus paper blue. Acids in water solutions show these most common characteristics: sour taste‚ react with metals‚ and turn litmus paper red. The understanding of chemical reactions‚ such as acid
Premium Hydrogen PH Base
In 1804‚ two men‚ Meriwether Lewis and William Clark were sent out by President Thomas Jefferson to explore the land of the Louisiana Purchase. The two men were to determine if the new territory actually had something that could contribute to America‚ or if there was nothing new or of importance. They were told to study the plant life‚ animals‚ and the geography of the region‚ to map out the borders of the land. In addition‚ they were to discover if the area had any natural resources which could
Premium Lewis and Clark Expedition Louisiana Purchase
proposal to finance for a mapping and scientific expedition to the far Northwest‚ beyond the Mississippi‚ which was foreign territory. In May‚ 1804‚ Jefferson assigned as commanders‚ Meriwether Lewis his personal secretary and William Clark‚ to set out on an amazing expedition across the Louisiana Territory. Lewis and Clark succeeded in many areas: Opened the U.S. from the Missouri River north to the Pacific Ocean‚ mapped and described the areas in detail‚ discovered many previously unknown species of
Premium United States Louisiana Purchase Native Americans in the United States
Tuesday evening Michael ‚and his friend Lewis we’re out at a new busy burger restaurant in New York that had the best juicy burgers. Michael was six foot two‚with brown hair‚ and green eyes‚ and lewis was six foot five with‚ brown hair‚and brown eyes. Michael order a number 12 with cheese‚ and Lewis was the kind of person who would get salad at a burger place‚ but get a burger at a salad place. This is when three Guys and their girlfriends walked in Lewis stared down one of the other man’s girlfriend
Premium Hamburger Fast food Fast food restaurant
picked John Lewis as a company to elaborate upon in this report. When looking into the company John Lewis they are uprising. They expand and broaden their range of products and services. They sell products to upper and middle class customers. John Lewis also has 28 department stores and 4 John Lewis at home stores. As well as the John Lewis department stores the partnership operates five Waitrose Food & Home stores combining the group’s Waitrose supermarkets with some of the John Lewis division’s
Premium Management Marketing Strategic management