Quartz Triboluminescence

Quartz Triboluminescence Many minerals and chemical compound display triboluminescence, which is light produced when chemical bonds are broken. Two minerals that exhibit triboluminescence are diamond and quartz. The procedure to produce the light is so simple, you should try it right now! Feel free to use diamonds, but be aware the light is produced when the crystal lattice is damaged. Quartz, on the other hand, is the most abundant mineral in the Earths crust, so you should probably start with that. Quartz Triboluminescence Materials You need any form of quartz, which is crystalline silicon dioxide (SiO2). You dont have to sacrifice perfect quartz crystal points for this project! Most gravel contains quartz. Play sand is mostly quartz. Go outside and find two semitranslucent rocks. Chances are good they are quartz. How to See the Light First, make sure the quartz is dry. The phenomenon occurs when the crystal lattice is torn apart by friction or compression. Wet quartz is slippery, so its presence will compromise your efforts.Gather your materials in a darkened location. It doesnt need to be pitch black, but light levels need to be low. Give your eyes a couple of minutes to adjust to make it easier to see the flashes of light.Method 1: Firmly rub together two pieces of quartz. See the flashes of light?Method 2: Strike one piece of quartz with another. Now, you may also get actual sparks using this method, plus you may chip off splinters of rock. Use eye protection if you go this route.Method 3: Walkthrough dry sand. This works well at a beach or in a sandbox, but the sand must be dry or else the water will cushion the crystals.Method 4: Crush a piece of quartz using pliers or a vise. This method is especially nice if you want to take a video of your project.Method 5: Do what the Uncompahgre  Ute did and fill a tr anslucent rattle with bits of quartz. Shake the rattle to see the glow. The native tribes used rattles made of rawhide, but a plastic bottle works fine, too. How Quartz Triboluminescence Works Triboluminescence sometimes is called cold light because no heat is produced. Material scientists believe the light results from a recombination of electrical charges that become separated when crystals are fractured. When the charges get back together, the air is ionized, producing a flash of light. Usually, materials that display triboluminescence are displayed an asymmetrical structure and are poor conductors. This is not a hard-and-fast rule, however, since other substances display the effect. Its not restricted to inorganic materials, either, since triboluminescence has been observed between vertebral joints, during blood circulation, and even during sexual intercourse. If its true the light results from ionization of air, you might expect all forms of triboluminescence in the air to produce the same color of light. However, many materials contain fluorescent substances that release photons when excited by the energy from triboluminescence. Thus, you can find examples of triboluminescence in just about any color. More Ways to See Triboluminescence Rubbing together diamonds or quartz is not the only easy way to observe triboluminescence. You can view the phenomenon by pulling apart two pieces of duck tape, by crushing wintergreen candies, or by pulling the Scotch tape from its roll (which also produces x-rays). The triboluminescence from the tape and the candies is a blue light, while the light from fracturing quartz is a yellow-orange. Reference Orel, V.E. (1989), Triboluminescence as a biological phenomenon and methods for its investigation, Book: Proceedings of the First International School Biological Luminescence: 131–147.

Eng Annotated Bibliograph Essays - Educators, Teach For America

Eng Annotated Bibliograph Essays - Educators, Teach For America Professor Voll Eng 105 31 Mar 2015 107 Annotated Bibliography Thesis: In todays world, a lot of students are not receiving the quality education they deserve because the lack of successful teachers. Many students who live in high area's schools are getting an excellent education they need in order to be successful in the future, opposed in urban community students lack the quality of a good education. However, this has significantly changed from an organization Teach for America, which was established to ensure students who are living in poverty have the same opportunity to have access to higher education. Behrman, Jere R., and Nevxer Stacey. The Social Benefits of Education. Michigan: U of Michigan, 1997. Print. This book, The Social Benefit of Education discusses the advantage and benefits of a good education. The population are potentially considerable and has changed many lives of students. The increase of education is highly getting strong and positive in terms of correlating with the measure of health, strong families, childrens wellbeing, a good clean environment and a host of many more things. The book The Social Benefits of Education talks about the correlation and government intervention regarding education. This is considered to be a useful source to implement into my research paper. It contains information that is relevant to my topic, such as how education is a way to benefit students and teachers in so many ways in term of professional and personal life. Spring, Joel H. American Education. 5th ed. New York: McGraw-Hill, 1996. Print This book is a great source because it pertains to my topic and talks about the power and the importance of education. How children need to be taught effectively in order to learn and grow as human beings. The author writes that education was a meaning for keeping a county in line. It is imperative to have students understand society needs an education and problems that cause lack of education. Joe Spring also addressed education and equality. In one of his chapters he focuses on student diversity in America. The majority of the nations is seeing a great increase in diversity in terms of families that relocate for job opportunities, improved political conditions, or illegal immigrations. Spring discusses also the current diverse population has made dramatic improvement. He really talks about a variety of things in the book. I think this source provides a ton of good information that can enhance my research paper. Hammond, Darling. "Does Teacher Preparation Matter? Evidence about Teacher Certification, Teach for America, and Teacher Effectiveness." Http://eric.ed.gov. N.p., Oct. 2005. Web. 28 Mar. 2015. In this article, studies have shown the great usage of Teach for America teachers are on the edge of being as effective and competitive as teachers in general who have certification for teaching. In other words, there has been a debate on how TFA teachers are considered to be more successful than teachers who has been through the process of testing and training requirement for a certification. The article also tells how the data shows Teach for America teachers are candidates that are from rigorous, selective universes, where they are required to receive weeks of training prior to teachingare as effective as similar teachers who are experienced, certified teachers. This article demonstrates that Teach for America teachers have been proved to be a good well-educated and a good resource for children in a successful matter, regardless. This is a good thing because TFA teachers are not considered to be certified teachers and still are able to perform well as other teachers. This is a g ood, very useful source for my research paper. It talks about the greatness of TFA teachers and how they are able to be successful just like a typical teacher who is certified to teach. It also goes on to relating to my topic, because my research paper is going to be regarding children who are living in poverty are not able to attain a good education. However, education equity that children are facing stops when TFA teachers are established to make an impact and change in children's lives. Teach for America organization is not only helping their teachers become more successful and gain leadership skills, but also have a huge impact on

Interaction and Engagement Coursework Example | Topics and Well Written Essays - 2000 words

Interaction and Engagement - Coursework Example Subsequently, the study will examine another project and offer five alternative design ideas that seek to enhance the interaction of the users with its technology and amongst themselves in a simple, yet engaging manner. However, rather than focusing on how specific technologies work to create the effects, the study will dwell on suggesting simple solutions that can produce the â€Å"Wow† factor. The case study being considered for this study is the â€Å"Piano Staircase,† a project created under the initiative of Volkswagen. THE PIANO STAIRCASE (Shinn 2010:6) The project, â€Å"Piano Staircase,† offers a staircase adjacent to an escalator on a subway in Odenplan, â€Å"Stockholm, Sweden† that makes passersby wonder as to what option to take (Shinn 2010:6). This was part of Volkswagen’s experimental campaign known as the â€Å"Fun Theory† that seeks to find out whether incorporating some innovations in design that contain the fun element can i ncite people to â€Å"engage in good behaviours† such as climbing the stairs instead of using the escalator (6). While Volkswagen and their PR professionals purport this as the fun element for the sake of entertainment, in actual practice they are aiming at analysing the needs of their audience and meeting their requirements in â€Å"new forms† (6). ... An analysis of Volkswagen’s innovative concept reveals that the inclusion of fun factor has enabled active interaction of most of the audience of the Piano Staircase as can be verified from the video clipping on YouTube. Their concept of encouraging more passersby to â€Å"choose the stairs† by providing a fun element in the design, works perfectly fine in this video (Piano Stairs: The Fun Theory 2009). The beginning, the video shows a nondescript, mundane staircase remaining unused by passersby who prefer the adjacent escalator. However, once Volkswagen adorns the staircase flooring with a piano key design on the floor, it attracts public attention. As a result, a couple of passersby, who initially decides to go by the escalator, reverses their decision and takes the stair after they notice a woman coming down the stairs and perhaps on listening to the sound of the piano notes as well. Subsequently, the video shows the number of people who take the stair increasing and as the video progresses, it shows the passersby interacting in different ways with the staircase and these interactions engage them intensely and actively with various aspects of the design of the staircase. For example, the pair of youngsters who walk the stairs finds the fun of the music quite engaging and fascinating. Lured by the design’s interactive charm, the boy hops around, in tune with the music. Similarly, a lone man walking the stairs jumps from key to key to listen varying notes of the piano. On the other hand, when a woman walks a toddler, the notes play the tune of â€Å"Twinkle, Twinkle Little Star.† In this manner, the piano notes cater to different audiences by understanding the needs of different users so that they can interact with

Leadership Factors Assignment Example | Topics and Well Written Essays - 750 words

Leadership Factors - Assignment Example I do not believe that the authentic leadership questionnaire is really valid because the answers are too subjective to provide a real understanding of one’s leadership style. Description of My Scores My scores on the Authentic Leadership Self-Assessment Questionnaire (ALSAQ) are as follows: Self-awareness, 13; Internalized moral perspective 17; Balanced processing, 10; Relational transparency 10; with a total of 50. According to Northouse (2013) all of these scores show weakness as an authentic leader when tallied individually. However, when the scores are added together, the final score falls within the high range (Walumbwa and Associates, 2012). When I look at these scores individually and the questions that were added together to create the score, I cannot say that these scores represent me or anyone as an authentic leader. According to Tobias (2011) the area of self-awareness is to measure the personal insights that a leader has and whether they understand their strengths and weaknesses. I scored a 13 in this area but I thought this was not a good indication of my ability. As an example, one of the numbers that determined this measure was number nine which read, â€Å"I seek feedback as a way of understanding who I really am as a person.† If someone seeks feedback from others to know who they are, I would say this is a weak leader. I said this would not describe me at all. In the next section, internalized moral perspective, Tobias (2011) states that this section measures an individual’s moral code and values. It also tells whether an individual has their own control or is controlled by others. I live by my own moral code and I do not allow other people to control how I act or react to situations. I believe this is a better way to live than to have someone else tell you what to do. Tobias (2011) states that the third category, balanced processing, measures critical thinking and the ability to take in information and make decisions after listening to other people’s opinions. Again, I think this is not a true measure of a person. I think it is better to stick to your own ideas, taking other people into consideration, but you must make the decision eventually. Welch and Welch (2012) say that being authentic shows that the individual is likable. I think this is true. People who are open and honest as far as they can be, are people who can be trusted. But, this is a perception and not necessarily a reality because it is based on how someone perceives someone else. Tobias (2011) states that he final section, relational transparency, measures how the leader communicates with others and expects that they will communicate openly and honestly. I scored a 10 on this section. I believe that I communicate well with others, but if I were leading a team, I would not reveal everything about myself to that team. I think that one can be authentic without telling all the details of their life. Implications of the Scores for M y Effectiveness as a Leader I do not think these scores really give an idea of how I would be as a leader. The scores are subjective, which means that I could change my mind about some of the scores and get a better score in the end. I think that these types of scores are like taking any personality quiz or romance quiz that one can find on the Internet. Nothouse (2013) states that this test has not had enough empirical evidence to show that it is valid. I would not take this test seriously if I wanted to know how I would be as

TOPICS CHOOSEN BY WRITER IN ACCORDENCE WITH PAPER INSTRUCTIONS Essay

TOPICS CHOOSEN BY WRITER IN ACCORDENCE WITH PAPER INSTRUCTIONS - Essay Example The key question is that The USA has one of the highest poverty rates in the world and its getting worse for the nation, with a total population of almost 37 million Americans living below the official poverty line, living on less than the substantiated amount of funds required to fulfill their food, clothing and lodging needs, so how do they need to be helped? Despite efforts made by the government in countering this issue, poverty has seen to be increasing in the near future; since the time that the recession hit the country, almost 27% of the people have been living in doom. â€Å"The report warns that the numbers will continue to rise, because although the recession is technically over, its continued impact on cuts to welfare budgets and the quality of new, often poorly paid, jobs can be expected to force many more people in to poverty. It is also difficult for those already under water to get back up again.† (Geal, Chris) America has a diverse range of people living that fall under the vulnerable part of society and has not been able to recover them since the recession; this has led them to further tumble into a state of mass poverty, something they are not able to come out of. Their social security needs have not been taken care of the government on a large scale and this is leading the circle to simply grow larger. In the recent times, the country has also been hit by a large number of natural disasters like hurricanes which have caused widespread and mass levels of destruction – homes have been destroyed and what does not seem to help is the fact that it is the poor that have been targeted by this act of god more than the wealthy sections of society. Unemployment in the economy is another major issue that has led to rampant poverty; the lack of jobs in the country, despite the repeated efforts of the government and the President’s motivational speeches, have done nothing for those that fall below the poverty

The Mongols Essay Example for Free

The Mongols Essay The Mongols swept across Asia and Europe in a bloody rampage. Killing over 6,107,000 people from the years 1220-1258. Treating women like a piece of meat meant to fulfill the pleasure of men. But how Barbaric were the Mongols on a scale of one to ten? Well the Mongols were very barbaric because they were uncivilized, brutal, yet conquered much territory. â€Å"Come out so that we may count on you according to our custom.† And when the people come out to them they seek out artisans among them and kept these. But the others with the exception of those they wish to have as slaves, they kill with the axe†¦This statement proves in many ways that the Mongols were uncivilized. Also soldiers would execute prisoners by shooting them with arrows or by burying them alive upside down in the dirt and tying there arms so they cant dig themselves out. Causing a slow excruciating bereavement of suffocation. Even the Mongol Yasa (laws) and Bilik (rules) were barbaric men were allowed to cheat on women having as many wives as they please but women could only have one husband and if a dad was to die then it was okay to marry all of his wife’s except for his own mother. Could you imagine our society if Mongols were in control? (Doc: 5, 10) â€Å"†¦Severed the heads of the slain from their bodies and heaped them up on piles†¦Ã¢â‚¬  Sounds Brutal doesn’t it? Can you imagine the people who could kill someone cut there heads of then pile them up like some piece of rubbish? Well the Mongols sure were brutal no doubt about it. They were so brutal they killed over 6,107,000 people from the years 1220-1258. In fact, it was commanded that the town of Nishaphur should be laid waste in such a manner that the site could be ploughed upon; and that †¦. Not even cats and dogs should be left alive. Also thief’s, did not exist in the Mongol life because they were so scared of the consequences of robbery that even the poorest sole wouldn’t dare think about steeling. Could you imagine how scary it must have been to be a Mongol or even one of there rivals? (Doc: 4,7) Finally, Under Genghis Khan the Mongols were great conquerors. They subjugated over 4,860,000 square miles. The Mongols had revolutionary war tactics such as, before a fight they would surround the enemy. Having there people (men, women, children, and some times dummy’s) on horses to make the other army think they were fighting a huge crowd causing panic among them as the Mongols came closer and closer attacking their enemy. With this tactic and many others Mongols both brought an onslaught and conquered a large amount of Asia and Europe. No wonder why the Mongols ruled the largest empire known to men for nearly 300 years. (Doc: 1, 6, 3) In conclusion the Mongols on a scale of one to ten were about a seven when it came to how barbaric they really were. Mostly Because of there strategies of war, laws, rules, execution of prisoners, conquest, and finally how brutal all together they were as a group of people. This is true due to the fact the Mongols were crude, atrocious, yet conquered a great deal of terrain.

Changes in the American Diet Essay -- essays research papers fc

I. Introduction A.  Ã‚  Ã‚  Ã‚  Ã‚  This paper will consider the adaptations of the United States to a changing diet, from the early to late twentieth century. B.  Ã‚  Ã‚  Ã‚  Ã‚  The purpose of this project is to research the evolution in American cuisine throughout the 1900s, towards a more convenience-based pattern of food consumption. The modernization of the United States, particularly in terms of the workforce, will be examined as it relates to a changing diet. Finally, some effects of these changes will be described. II.  Ã‚  Ã‚  Ã‚  Ã‚  Background: Early Twentieth Century Cooking III.  Ã‚  Ã‚  Ã‚  Ã‚  Modernization of the United States A.  Ã‚  Ã‚  Ã‚  Ã‚  Women in the Workforce B.  Ã‚  Ã‚  Ã‚  Ã‚  Technological Advances in Food Preparation C.  Ã‚  Ã‚  Ã‚  Ã‚  Less Time Spent in the Kitchen IV.  Ã‚  Ã‚  Ã‚  Ã‚  Changes in American Diet A.  Ã‚  Ã‚  Ã‚  Ã‚  Background: Early Twentieth Century Cuisine B.  Ã‚  Ã‚  Ã‚  Ã‚  The Rise of Convenience Foods 1.  Ã‚  Ã‚  Ã‚  Ã‚  Prepackaged and frozen foods 2.  Ã‚  Ã‚  Ã‚  Ã‚  Fast food industry 3.  Ã‚  Ã‚  Ã‚  Ã‚  Eating away from home C.  Ã‚  Ã‚  Ã‚  Ã‚  Nutrient Levels, 1900-present D.  Ã‚  Ã‚  Ã‚  Ã‚  Increase of Fats and Sugars in the American diet E.  Ã‚  Ã‚  Ã‚  Ã‚  Increased Food Consumption V.  Ã‚  Ã‚  Ã‚  Ã‚  Discussion A.  Ã‚  Ã‚  Ã‚  Ã‚  Qualifications B.  Ã‚  Ã‚  Ã‚  Ã‚  Conclusions C.  Ã‚  Ã‚  Ã‚  Ã‚  Suggestions for Further Study VII. Works Cited Introduction This paper will explore the culturally adaptive, yet physically maladaptive, changes in American diet from early to late twentieth century. A shift from traditional to convenience foods coincides with the general modernization of the United States, specifically in the role of women in the home and in the workforce. As America changes from a rural nation to one that is urban and industrialized, with rapidly increasing technology, more and more women are seen in the workforce. This increased activity allows less time for preparing meals, and modernization makes spending this time unnecessary. However, increased accessibility of food, and especially convenience food, leaves... ... and dietary adequacy.† Ecology of Food and Nutrition 14 (1984): 105-115. Bindon, JR. â€Å"Some implications of the Diet of Children in American Samoa.† Collective Anthropology 1 (1994): 7-15. Bowers DE. â€Å"Cooking trends echo changing roles of women.† Food Review 23 (2000): 23-30. Dortch S. â€Å"America weighs in.† American Demographics 6 (1997): 38-46. Dyson LK. â€Å"American cuisine in the 20th century.â€Å" Food Review 23 (2000):2-9. Goodman P. â€Å"Time capsule: dinners and entrees.† Frozen Food Age 51 (2002):37. Goungetas, B, and K Morgan. Snacking and eating away from home. In Peter F, What Is America Eating? Washington, D.C.: National Academy Press, 1986. Krebs-Smith J, SM Krebs-Smith, and H Smiciklas -Wright. Variety in Foods. In Peter F, What Is America Eating? Washington, D.C.: National Academy Press, 1986. Marcus MB, and A Spake. †A fat nation.† U.S. News and World Report Aug. 2002: 40. Schlosser E. Fast Food Nation: The Dark Side of the All-American Meal. New York: Perennial 2002. Tillotson JE. â€Å"Our ready-prepared ready-to-eat nation.† Nutrition Today 37 (2002): 36-39. U.S. Department of Labor. Employment Status of U.S. Civilians by Age and Sex. Bureau of Labor Statistics, 2001