Tuesday, December 31, 2019

Separate Pigments Using Chalk Chromatography

Chromatography is a technique used to separate components of a mixture. There are many different types of chromatography. While some forms of chromatography require expensive lab equipment, others can be performed using common household materials. For example, you can use chalk and alcohol to perform chromatography to separate the pigments in food colorings or inks. Its a safe project and also a very quick project, since you can see bands of color forming within minutes. After youve finished making your chromatogram, youll have colored chalk. Unless you use a lot of ink or dye, the chalk wont be colored all the way through, but it will still have an interesting appearance. Chalk Chromatography Materials chalkalcohol (isopropyl alcohol or rubbing alcohol seems to work best)ink, dye, or food coloringsmall jar or cupplastic wrap Apply your ink, dye or food coloring to a piece of chalk about 1 cm from the end of the chalk. You can place a dot of color or stripe a band of color all the way around the chalk. If you are mainly interested in getting bands of pretty colors rather than separating individual pigments in the dye, then feel free to dot multiple colors, all in the same place.Pour enough rubbing alcohol into the bottom of a jar or cup so that the liquid level is about half a centimeter. You want the liquid level to be below the dot or line on your piece of chalk.Place the chalk in the cup so that the dot or line is about half a centimeter higher than the liquid line.Seal the jar or put a piece of plastic wrap over the cup to prevent evaporation. You can probably get away with not covering the container.You should be able to observe the color rising up the chalk within a few minutes. You can remove the chalk whenever you are satisfied with your chromatogram.Let the chalk dry before using it for writing. Heres a video of the project, so you can see what to expect.

Sunday, December 22, 2019

The Minister’s Black Veil†External, Internal Conflict Essay

â€Å"The Minister’s Black Veil†Ã¢â‚¬â€œ External, Internal Conflict Based on the evaluations of literary critics, Nathaniel Hawthorne’s short story, â€Å"The Minister’s Black Veil,† contains both an external and an internal conflict, about equally treated in the tale. It is the intent of this essay to explore both types of conflict as presented in the story. R. W. B. Lewis in â€Å"The Return into Rime: Hawthorne† implies internal and external conflict in his statement: â€Å"Finally, it was Hawthorne who saw in American experience the re-creation of the story of Adam and who . . . exploited the active metaphor of the American as Adam – before and during and after the Fall† (72). Q. D. Leavis says regarding internal confllict: the†¦show more content†¦At the outset of the tale, â€Å"The Minister’s Black Veil,† the sexton is tolling the church bell and simultaneously watching Mr. Hooper’s door, when suddenly he says, ``But what has good Parson Hooper got upon his face? The surprise which the sexton displayed is repeated in the astonishment of the onlookers: â€Å"With one accord they started, expressing more wonder. . .† The reason is this: â€Å"Swathed about his forehead, and hanging down over his face, so low as to be shaken by his breath† is a black veil. The 30 year ol d, unmarried parson receives a variety of reactions from his congregation: ``I cant really feel as if good Mr. Hoopers face was behind that piece of crape ``He has changed himself into something awful, only by hiding his face ``Our parson has gone mad! Few could refrain from twisting their heads towards the door. . . . . . . more than one woman of delicate nerves was forced to leave the meeting-house. At this point begins the external conflict of the drama – between the minister and the people of his congregation, which will last until his death. Except for the sable veil, Reverend Hooper is quite a compatible and sociable personality: Mr. Hooper had the reputation of a good preacher, but not an energetic one: he strove to win his people heavenward by mild, persuasive influences, rather than to drive them thither by theShow MoreRelatedEssay on External and Internal Conflict in The Minister’s Black Veil2520 Words   |  11 PagesExternal and Internal Conflict in â€Å"The Minister’s Black Veil†Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚        Ã‚  Ã‚  Ã‚   Nathaniel Hawthorne’s short story â€Å"The Minister’s Black Veil† manifests a duality of conflict – both an external conflict and an internal conflict. It is the purpose of this essay to explore both types of conflict as manifested in the story.    In the opinion of this reader, the central conflicts – the relation between the protagonist and antagonist (Abrams 225) - in the tale are an internal one, a spiritual-moralRead More The Minister’s Black Veil - Conflict, Climax and Resolution Essay2908 Words   |  12 Pagesâ€Å"The Minister’s Black Veil† - Conflict, Climax and Resolution  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚        Ã‚  Ã‚   Nathaniel Hawthorne’s â€Å"The Minister’s Black Veil† will be examined in order to determine the conflicts in the tale, the climax and resolution.    The conflict involving evil and sin, pride and humility is the direction that Clarice Swisher in â€Å"Nathaniel Hawthorne: a Biography† tends: â€Å"Hawthorne himself was preoccupied with the problems of evil, the nature of sin, the conflict between pride and humility† (13)Read MoreEssay on The Allegory in The Minister’s Black Veil2914 Words   |  12 PagesThe Allegory in â€Å"The Minister’s Black Veil†Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚        Ã‚  Ã‚   It is the purpose of this essay to show that Nathaniel Hawthorne’s â€Å"The Minister’s Black Veil† is indeed an allegory. M. H. Abrams defines an allegory as a â€Å"narrative, whether in prose or verse, in which the agents and actions, and sometimes the setting as well, are contrived by the author to make coherent sense on the ‘literal,’ or primary, level of signification, and at the same time to signify a second, correlated order of signification†Read More Psychoanalitic Approach to The Minister’s Black Veil Essay2506 Words   |  11 Pagesshow how realistic, even common, this somewhat absurd event may actually be. In a psychological analysis, this is a necessary element in both de-personalizing a situation and giving it potential for universal application. In Hawthorne’s The Minister’s Black Veil, many interpretations by way of psychological analysis are possible, and, once exposed, quite apparent. Once r evealed, there are many routes for understanding the story in a psychoanalytical context. The main approaches this essay will takeRead More Allegory, Symbolism, and Madness – Comparing the Demons of Edgar Allan Poe and Nathaniel Hawthorne3842 Words   |  16 Pages As contemporaries of each other, Edgar Allan Poe and Nathaniel Hawthorne endeavored to write about man’s dark side, the supernatural influence, and moral truths. Each writer saw man as the center-point in his stories; Poe sees man’s internal struggle as madness, while Hawthorne sees man as having a â€Å"secret sin.† Each had their reasons for writing in the Gothic format. Poe was not a religious man; he was well educated and favored reading the German Gothic literature, which would become

Saturday, December 14, 2019

Nonverbal Ambiguity Free Essays

Nonverbal messages can often be misunderstood. Often this misinterpretation is said to be socio-cultural. I remember an instance myself when I was in high school and a miscommunication happened between my friends and I. We will write a custom essay sample on Nonverbal Ambiguity or any similar topic only for you Order Now    It was only so unfortunate that it happened in the course of passing our exams. Naturally, we knew we could increase our ability to pass if we worked as a team. One of my classmates suggested that we come up with hand gestures that would represent each of the four letters that almost always appear in our test papers: a, b, c, and   d. Hence, it was agreed that the hand gestures would be used as a tool during our exam week. Our hand gestures comprised a set of inconspicuous behaviors such as light scratching of ones’ nose for the letter a, pinching lightly ones’ ears for letter b, wiping ones’ handkerchief to the face for letter c and ultimately, shifting from one side to the other in ones’ seat for letter d. So during the exam week we started with a relish. History was our first exam and with our ‘tool’ we went through it like breeze. Naturally, physics being the most challenging of all subjects was where I highly depended on my classmates the most. My best friend, who was sitting a row in front of me, was excellent at physics and I answered faithfully to the hand gestures he showed. Finally, results were given the following week and I was amazed at the result of my physics test: an F. I was shocked, since I was certain to get a B or A. So after the class, my friend and I had a little chitchat and it turned out he wasn’t feeling so well at the time, which must have explained why he kept shifting from side to side. I thought his ‘side shifting’ was an answer to the physics questions when they were a response from feeling uncomfortable during the time. The result of that misinterpretation was a failing grade. My experience of nonverbal ambiguity was nevertheless simple for which there was no any catastrophic reaction however for people belonging to different cultures or backgrounds the implications for any misinterpretation maybe enormous. References: Montshire Minute: Non-Verbal ways of Communication . 8 June 1998. 29 June 2007 http://www.montshire.org/minute/mm980608.html.                                        How to cite Nonverbal Ambiguity, Essay examples

Friday, December 6, 2019

Narrative Essay Example For Students

Narrative Essay MY BEAUTIFUL PARROT AND MY TROUBLED ROOSTERI remember when I was ten years old, and my dad used to tell me how attractive parrots were. But I argued with him that roosters were more beautiful than parrots because I had never seen a parrot before. I remember Dad when he brought me a parrot in a cage and said to me it was the one that he believed to be the most attractive bird in the world. I looked at him and turned around and stared at the parrot because I was amazed. Since that day I have become convinced that parrots have many qualities, which make them superior to roosters. Parrots are more attractive than roosters.They have bright red or orange hood bills and colorful feathers, with pointed tails and dark black clawed feet. Its eyes are bright with a delightful look. Looking at a parrot is like looking at a rainbow that has many different bright colors, while rooster have fat reddish combs that look like roses that have withered. Its feathers have dull color that does not stand out. Their feet claws are dark brown like mud. Even though roosters have spangled feathers that are white with dark tips, still it is a common color. Parrots are also more intelligent than roosters. This parrot that I saw is only attractive, but intelligent. He can be tamed and imitate word and actions. Also he has the ability to mimic human speech. I remember my sister when she got into trouble at school, annd my mom was very upset with her, so she scolded her. After she had scolded her our parrot began teasing her with words that my mom said so she got really mad and left to her room. From that day till now my sister thought of our parrot as a stupid bird, but I thought of him as an intelligent bird. My rooster; however, on the other hand, had poor abilities and performed simple acts. One morning my dad tried to tame my rooster and make him catch a grasshopper, yet he caught our cats tail, so she screamed and chased him. My rooster was terrified, so he hid under the bushes for two days. Finally, parrots have better temperament than roosters. Theyre sensitive and enjoyable. My mom enjoys cooking while our parrot sings the alphabet, and when she forgets the food timing on the oven, he reminds her. I, too, like our parrot because he helps me tease my sister. I believe having parrots for pets is better than roosters because they are gentle and affectionate animals, while roosters are unfriendly, untamed, and unclean. I remember mom when she tried to feed my rooster, and he pecked her finger and took off her finger nail, so she got mad and left. Also, when my mom sprinkled the flower seeds on her garden, my rooster ran after her and dug the dirt and ate all the flower seeds, which proved to me that roosters are unruly animals. The most common thing I hate from roosters is that they play in the dirt and dig in it to find earthworms. Having roosters for pets is not a bad idea, but it cost you too much. But having parrots for pets is a good choice because theyre beautiful, gentle and affectionate. I never knew that parrots are the most attractive bird in the world. But now that I have seen one and have become convinced by its beauty, I now believe that it is the most attractive and intelligent bird in the world and most of all a good mate. Words/ Pages : 637 / 24