Rating Minerals on Mohs Scale of Hardness

Rating Minerals on Mohs Scale of Hardness Mohs hardness scale was devised in 1812 by Friedrich Mohs and has been the same ever since, making it the oldest standard scale in geology. It is also perhaps the most useful single test for identifying and  describing minerals.  You use the Mohs hardness scale by testing an unknown mineral against one of the standard minerals. Whichever one scratches the other is harder, and if both scratch each other they are the same hardness. Understanding Mohs Hardness Scale The Mohs scale of hardness uses half-numbers, but nothing more precise for in-between hardnesses. For instance,  dolomite, which scratches calcite but not fluorite, has a Mohs hardness of 3 ½ or 3.5.   Mohs Hardness Mineral Name Chemical Formula 1 Talc Mg3Si4O10(OH)2 2 Gypsum CaSO4 ·2H2O 3 Calcite CaCO3 4 Fluorite CaF2 5 Apatite Ca5(PO4)3(F,Cl,OH) 6 Feldspar KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 7 Quartz SiO2 8 Topaz Al2SiO4(F,OH)2 9 Corundum Al2O3 10 Diamond C There are a few handy objects that also help in using this scale. A fingernail is 2 ½, a penny (actually, any current U.S. coin) is just under 3, a knife blade is 5 ½, glass is 5 ½Ã‚  and a good steel file is 6 ½.  Common sandpaper uses artificial corundum and is hardness 9; garnet paper is 7 ½. Many  geologists just use a small kit featuring 9 standard  minerals and some of the above-mentioned objects; with the exception of diamond, all of the minerals on the scale are fairly common and inexpensive.  If you want to avoid the rare chance of a mineral impurity skewing your results (and dont mind spending some extra money), there are sets of hardness picks available specifically for the Mohs scale.   The Mohs scale is an ordinal scale, meaning that it is  not proportional.  In terms of absolute hardness, diamond (Mohs hardness 10) is actually four times harder than corundum (Mohs hardness 9) and six times harder than topaz (Mohs hardness 8).  For a field geologist, the scale works great.  A professional mineralogist or metallurgist, however, might obtain absolute hardness by using a  sclerometer, which microscopically measures the width of a scratch made by a diamond.   Mineral Name Mohs Hardness Absolute Hardness Talc 1 1 Gypsum 2 2 Calcite 3 9 Fluorite 4 21 Apatite 5 48 Feldspar 6 72 Quartz 7 100 Topaz 8 200 Corundum 9 400 Diamond 10 1500 Mohs hardness is just one aspect of identifying minerals. You also need to consider luster, cleavage, crystalline form, color, and rock type to zero in on an exact identification. See this step-by-step guide to mineral identification to learn more. A minerals hardness is a reflection of its molecular structure - the spacing of the various atoms and the strength of the chemical bonds between them. The manufacture of Gorilla Glass used in smartphones, which is nearly hardness 9, is a good example of how this aspect of chemistry is related to hardness. Hardness is also an important consideration in gemstones. Dont rely on the Mohs scale to test rocks; it is strictly for minerals. The hardness of a rock depends on the exact minerals that make it up, particularly the mineral that cements it together. Edited by Brooks Mitchell

The Provisions of Convention on the Rights of the Essays

The Provisions of Convention on the Rights of the Essays The Provisions of Convention on the Rights of the Child. The International programme on Elimination of Child Labour was ILO's response to provide direct assistance to countries to tackle child labour and give teeth to the United Nations Convention on the Rights of the Child made effective in 1989. Today it has 30 funders and 86 programme countries ILO in its Report. "The end of child labour; within reach" released in 2006 says, in 2004 there were 218 million children trapped in child labour of whom 126 million were in hazardous work. However the number of child labourers globally fell by 11% over the last four years, while that of children in hazardous work decreased by 26%. (www.ilo.org/declaration) IPEC the campaign instrument against child labour conducted by ILO commenced in 1992 and has made several break throughs in advocacy; tackling the worst forms of child labour; developing a learning culture and mainstreaming child labour within the decent work agenda. ILO is also aware of future challenges. Child labour elimination may be mainstreamed into key development and Human Rights frame works like Millennium Development Goals and poverty reduction strategies. Child labor first emerged as a major public policy issue with the impact of the industrial revolution. The first wave of industries at countries offered several packages of intervention to overcome presence of child labour like advocacy campaigns; public inquiries; minimum age legislation; education provision for working children. These have been expanded, replicated by many developing countries ILO has expanded its efforts through IPEC programme in some 90 countries. It has been observed that child labour declines with increase in GDP growth; improved school attendance; reduction of absolute poverty; The elimination of child labour is linked with provision of compulsory, free and accessible education. Without educational opportunities it is likely that children will enter the labour market and take on dangerous and exploitative jobs. Though the Dakar forum of 185 countries resolved to provide all children of primary age free schooling of quality by year 2015 and eliminate gender disparities by year 2005 much remains to be achieved. Although concept of education for all has not taken off the ground at an international scale, efforts are made with community groups, parents, employers, and government officials to remove children from work and enroll them in school. An example is efforts of an NGO(MV foundation) made in India in state of Andrah Pradesh. It enabled 150,000 to be enrolled and retained in schools and more than 4,000 boned labourers released and of 500 villages under project 168are free of child labour. These results were achieved through awareness raising and demand for education of children; support Teachers through special training; support parents to provide alternatives to labour of child withdrawn; provide clearing schools to prepare children for formal education. (source: Child Labour a Global concern, www.schoolsthebestplacetowork.org) UNICEF has been advocating education as a preventive strategy against child labour (www.unicef.org/evalvatebase/file) child labour evaluate rights 27 Feb 2004 National International comments PDF. Some ILO actions against child labour since 2002. SCREAM stop child labour (sup poring children's Rights) through education the arts and the medias is a community based education and social mobilization programme that commenced in 2002 it is directed to children and youth in some situations programme works with world Scout Movement, in Arab States it works with UNESCO (p 29,30) World Day Against Child Labour initiated in June 2002 is another tool. Annually it has focused on particular issues of relevance like child domestic labour, trafficking, elimination of child labour in mining and quarrying . ILO Red Card to child labour has expanded campaign to sports and removal of children from abusive sports good production. There have been efforts to improve knowledge base on child labour. This is linked to research data collection and field operations and surveys. (P46) Links have been observed between child labour and globalization. "Globalization can help reduce child labour in countries where there is a relatively largepool of workers with at least a basic education complemented with active social policies." A few studies have also shown that "child labour appears to diminish as foreign direct investment increases"(pg 19). Special country projects directed at eliminating child labour have been identified. The CSR Movement (corporate social responsibility) encourages voluntary codes of conduct in industries where child labour may prevail like garments, sports goods, footwear, toys. Employer organizations like the Federation of Uganda Employers, have been actively involved in preventing employment of child labour in agricultural sector. The Employers Organization in Yunan Province, China (p 70) has taken hand the arrest of trafficking women and children. Trade Unions have joined hands against child labour in Andhara Pradesh (p72) aimed

Journal Topics for Self Understanding

Journal Topics for Self Understanding The following journal topics all are geared to help students learn a little more about themselves as they grow in self-understanding. In addition to the topics listed below, associative writing, the writing of thoughts as fast as they come to mind without worrying about sentence structure or punctuation, may be particularly helpful when a student is troubled or experiencing writers block. When I need time for myself...If I could live anywhereI really miss...I never expected...An unusual day in my lifeFor my birthday Id like...The worst gift I ever got...I daydream most about...I really wish....Something few people realize about meI wish I werent so...One of my best points is...One of my most important goals is...I dream that one day...My hardest class isWhat makes me feel proud isIm glad Im alive whenSome little things I often forget to enjoyAssociative Writing: Associative writing, also called free writing, requires that the student writes his or her thoughts as fast as they come to mind with no attention to sentence structure or punctuation. The technique may be particularly helpful when a student is troubled or suffering from writers block. Although I like to teach students how and when to use associative writing, I prefer that they do it outside of class and not as an English assignment.

How to Copyright a Book (in 10 Minutes Or Less)

How to Copyright a Book (in 10 Minutes Or Less) How To Copyright A Book: A Definitive Guide Want to know how to copyright a book you've written? That’s probably a smart idea. You don’t want this nightmarish scenario to occur a year down the road: you’re in a bookstore and you pick up a random novel. You notice that the dialogue sounds familiar. Upon further inspection, you realize that everything in this book is a dead ringer for your work - down to your character Mick, who now goes by Dick.Copyright is something authors are often curious about, though it’s so complex that few are eager to dip a toe into it. And it needn't  be an author’s first worry. However, if you're self-publishing a book, then the onus is on you to educate yourself on all aspects of the business - which includes protecting your intellectual property.Obligatory disclaimer: no-one at Reedsy is an attorney - this is by no means professional advice. But to make the topic easier for authors to unpack, we conducted research and spoke with practicing attorneys and have unmuddied the waters for you.Want to skip ahead? Check out our  explainer video or  download an infographic that spells out the process of copyright registration.What is copyright?Copyright is just that: the right to copy. When books are published, this right prevents others from replicating your work and selling it (for profit or otherwise) without your consent. jmason@copyrightcounselors.com.Sean Lynch is an intellectual property attorney who provides copyright and trademark advice to clients building businesses and brands. In addition, you can find Sean at slynchlaw.com and thesurflawyer.com.Henry Runge is an  Associate Director of UNeTecH. He protects scientists' inventions and works with entrepreneurs and creatives to develop business opportunities for intellectual property.Finally, to read about the topic straight from the source, visit the U.S. Copyright Office, the U.K. Intellectual Property Office, and the Australian Copyright Council websites.If you're in the finishing stages of completing a book? Check out our blog post that details the technical process of making a book.Any stories to share? Any more questions? Let us know below and we’ll answer all of them personally!

Assignment 2 Essay Example | Topics and Well Written Essays - 1500 words - 3

Assignment 2 - Essay Example ve with regard to what computer systems their software runs on and what computer systems it does not through sabotaging the Max OS X operating system. The situation with Apple is more complex and deserves a more concrete explanation. Apple produces an operating system which is supposed to only run on machines which are made by Apple. In recent times, Apple moved to the Intel processors and along with this move, it left the door open for other companies to use the same motherboard and chips to provide Mac clones. One such company is Psystar, which has produced computers running Mac OS X at rates which are much cheaper than comparative Apple computers. The exclusivity of Mac OS X running on Apple made machines is therefore under threat and it is likely that Apple would want to put a stop to this. At the same time, there have been court rulings which hold â€Å"that a software publisher cant require you to run an operating system on a specific type of hardware (Himowitz, 2008, Pg. 1)†. However, there is nothing stopping Apple from releasing an update to its Mac OS X system which stops the computer from running if an ‘unauthorized’ system is detected. Essentially, Apple â€Å"can always sabotage the usurper by issuing updates that wont run on the alien machine, or that disable it (Himowitz, 2008, Pg. 1)†. Here, sabotage may be entirely legal and the only result of the sabotage would be that a lot of the people using Psystar created Apple computers could be left holding the bag. Apple has done the same in the past with its iPhone devices which were hacked to run on wireless carriers other than the ones licensed by Apple. The laws and the ethics concerning this topic need to be defined further since once a buyer has purchased a device or has bought a piece of software it should be permissible for them to use it any way they like. Apple should not be able to sabotage an iPhone which is not being used in the manner Apple would like to see it being used. If Apple

The Impact of Good Corporate Governance in Internal Control Essay

The Impact of Good Corporate Governance in Internal Control - Essay Example As result, nowadays, the corporate governance has a significant role to the companies to escape from failures in collapses or fraud. However, the discovery and prevention of fraud are significant challenges facing the business environment. Therefore, the ways in which companies' deals with fraud may enhance either the internal control and independent internal auditor or the need for forensic accounting. The forensic accounting is increasing in many organizations to identify situation, systems and security weaknesses by design and advise measure to reduce and limited inherent risk in the organization. The Enron and WorldCom in the US corporate collapses and fraud shook the foundation of the financial system and corporate governance, therefore; regulators in the U.S reform corporate governance by established the Sarbanes-Oxley act in June 2002 and Cadbury in the UK, in 1992, which now combine code. This assignment will illustrate the impact of good corporate governance in internal cont rol and internal auditing function to prevent fraud and detection. 2. Corporate governance and the prevention of fraud and detection Through the decades, the increase of the complexity of organizational activities have resulted to the increase of the difficulty of their control.   However, a mechanism should be also established ensuring that the rules and the guidelines included in the firm’s corporate governance scheme are followed. In any case, the value of the corporate governance as a framework for preventing fraud and defection across the organization cannot be doubted. This view is analytically explained below referring primarily to the main aspects and the role of corporate governance as a strategic tool for monitoring the progress of the organization in regard to its aims and mission; at the next level, the role of corporate governance in preventing fraud is presented explaining the challenges and the benefits of the involvement of corporate governance in such activity. 2.1 Corporate governance – role and characteristics Different approaches can be used in order to explain the role of corporate governance in modern organizations. In accordance with Anand (2007) corporate governance is a framework that ‘incorporates almost every aspe ct of corporate life’ (Anand 2007, p.77); however, it is explained that in its common form, the corporate governance framework consists of rules that aim to protect the interests of the firm’s shareholders (Anand 2007). On the other hand, Du Plessis et al. (2010) note that the term ‘corporate governance’ can incorporate many elements; among these elements two are considered to be the most important: the promotion of the interests of the shareholders and ‘the regulation/ monitoring of the corporate conduct’ (Du Plessis et al. 2010, p.10).  

American Popular Culture Essay Example | Topics and Well Written Essays - 750 words

American Popular Culture - Essay Example In both presentations, popular culture is normally perceived as being less important by its icons so as to bring together wide acceptance that can dominate the mainstream ideology. As a consequence, it is normally castigated by non-mainstream forces which consider it shallow, consumerist, scandalous, or dishonest. This paper compares and contrasts the role of race (as discussed by another party) and advertising (presented by myself) in the American popular culture. Media advertising is largely a general part of the human lifestyle, especially in a consumerist society in the same way as race (Solomon 59). The average person in American society is faced with numerous adverts every day including billboards, television commercials, movie trailers and commodity introduction in films, online ads, radio and print media ads among others in the same way race pops up in virtually every social setting. In my presentation, advertising is seen as partly driven by popular culture attributes, and partly educative, in the sense that, the consumer learns about and how to understand other ways in which the popular culture manifests such as the needs and preferences of racial groups in respect of commodities set for sale. According to Solomon (60) Movie trailers, for example, are not just geared towards the sale of the media clip, but rather they attempt to influence the way the audiences perceive the storyline and the actions. Owing to the integration of various races in a film, the effect on the audience is similar to that of pure advertising in the sense that both improve socialization through cross-cultural interactions, influencing thought processes and the feelings of the audience in a balanced way. Cross-racial interactions in movies are similar to and or compliments media ads seeking unity in diversity, especially in the wake of globalization.