Thermochromism Thermochromism refers to the phenomenon of color changes by the agency of heat. Obviously‚ the color changes are made possible by the temperature-induced chemical or physical changes of materials incorporated into the inks. Sometimes‚ the color change occurring at a temperature is permanent‚ and at other times the original color can be regained on cooling. Accordingly‚ we have an irreversible or reversible thermochromic system. The required chemistry can be adopted based
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INK & PAPER COMMUNICATION People say that the art of letter writing is dead. But my idea of heaven is writing a letter to a dear friend in a far away town‚ a note to my cousin saying “ thankyou ” for the dinner we had this weekend‚ a fan letter to the writer whose story I read and admired. I love to write something‚ be it a short story‚ a poem‚ a serious article or just letters. It is so magical to gather the right words and put them together on the paper… I write a couple of letters a day
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contrasting two different texts. The selected text types certainly depict the element‚ firstly through the film ‘Strictly Ballroom’ directed by Baz Luhrmann‚ which explores the tension between uniqueness and conformity. And secondly the novel ‘The Ink Bridge’ by Neil grant‚ which explores the alienation and ignorance about a whole new culture. In the film ‘strictly ballroom’ Lurhmann was able to show the personal‚ cultural and social contexts. We as the audience saw these ideas through the use of
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Ink Chromatography Lab Background Information Paper chromatography is an analytical method that is used for separating and identifying mixtures of substances into their smaller parts. Paper chromatography works because the ink used contains several dyes (pigments) that when place on porous paper are dissolved in a solvent by capillary action. When the pigments (solutes) are dissolved in the solvent (water & alcohol mixture) they move through the paper at different rates depending on their
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A & E Bridal A & E Bridal (Bridal) provides product such as wedding gowns‚ bridesmaid dresses‚ shoes‚ jewelry‚ and other accessories. These goods are purchased from a few reliable outside distributors that specialize in the products that Bridal needs. Bridal first opened its doors in 1998 and now has fours stores located throughout the western United States. Each store employs 15 to 20 employees‚ about 70 in total‚ who hold positions such as manager‚ salesperson‚ seamstress‚ etc. There is a home
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Strategy Case Analysis Executive Summary Executive Summary eHarmony is uniquely placed in the online personals market through strategic innovation eHarmony is placed in a highly competitive market * Different segments exist within the market- e.g. free do it yourself‚ niche sites‚ paid do it yourself‚ etc. each having many players * Emerging threat from substitutes like social networking sites * Direct competition launched by biggest competitor ‘Match’ through its ‘Chemistry’
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with invisible ink in the American Revolution There were plenty of problems with invisible during the American Revolution‚ but there were a few that were worse than the others. Three of the main problems were that supplies were hard to come by to make invisible ink this is the one that was the hardest problem to overcome. One problem was that blank spaces on paper were suspicious. Another problem was that when heated the paper would become fragile. During the revolution the ink supply was low
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Ink jet computer printers Well‚ I’m going to talk about ink jet computer printers‚ that I believe everybody knows‚ because we use them almost every day. I will present you what types of ink jet printers we know and how works each of them. After my presentation or at home you should do the exercises‚ I (mr. somebody) gave you. We know different types of ink jet printers like thermal ink jets‚ piezoelectric ink jets and continuous ink jets. Each of them works in a different way. Most of
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The termites’ reaction to pheromones in different colors of ballpoint pen ink. Abstract: We conducted the experiment with termites in order to determine how they react to pheromones present in different colors of ballpoint pen ink. The experiment consisted of two parts: in first part we used a ballpoint pen with blue ink‚ in second – a ballpoint pen with red ink. The reaction of termites was measured by their performance in 1 minute. Every termite in experimental group went through 3 tries in each
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Feasibility of Charcoal and Duhat (Syzygium cumini) as Alternative Whiteboard Marker Ink Acknowledgement The researchers would like to express their heartfelt gratitude to the following that helped them pursue this investigatory project: First of all‚ they would like to thank the Almighty for allowing this project to be possible. Through His guidance‚ the study was conducted and completed without any harm coming to them To their ever supportive
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