Thursday, November 18, 2010

Revision of Composition #6

Power makes many people blind.It does not matter in what field of jobs,because some people are easily captivated by corruption anyhow.They lose the sense of right or wrong,become dishonest,and take the advantage of power illegaly.I know a political leader from Bangladesh who had been abusing power by getting corrupted.I am going to depict the rise and fall of his power.
Every city in the world elects a person as a Mayor so that he or she can make the city life better.Arif Chowdhury,a political leader was once elected as the Mayor of Sylhet City about four years ago.He was a social worker as well as a the student leader in his early life.He had been doing so many good works such as for women rights,shelter for poor people etc.As time passed by,he bacame one of the candidates in the Mayor election.He committed to change the entire Sylhet city into something special.And he was elected as the Mayor by many votes.
As a Mayor,Arif Chowdhury was really doing fine.However,things had changed after six months of his reign.Gradually, it seemed that he had become reluctant all of a sudden.He stopped meeting with people who had problems to tell him;his friendship turned out to be with rich people and did not care to solve any troubles for poor people anymore.Moreover, he had his own gang scattered all ovre the city.These were just the simple things that were visible to us.
Everyone was surprised after knowing more secrets about the Mayor, Arif Chowdhury.He had been taking huge amount of bribes in order to give contracts to people for contruction works, owned the land from poor hopeless people by tricking them, taking unnecessary loand from banks, and the major part was that he had been storing all the ration that came from government in order to provide to the helpless.All these would never have been disclosed if he was not caught red handed by the CID(Criminal Investigation Department.)After tracing all the evidence of his illegal deeds, the secret service CID had arranged a plot where Arif Chowdhury wanted to take bribe from a building constuctor in terms of giving him the contract.Overall, he contravened the laws in many ways and preassumably defrauded 10 million taka in Bangladesh currency.Now, he is imprisoned for nine years.
In every bad deeds there must be a downfall at a certain point.It is like a mountain has its peak where it goes down after a steep inclination.Being enticed to the blindness of the power,Arif Chowdhury lost his ethics, honesty,ideals, and sought more power.As a result,he had seen the extreme devastation.That is why Plato,a famous philosopher said that power seekers,corrupted people, and more educated people cannot be good leaders but the one who only seeks to serve people without looking for his or her own benefit.

Wednesday, November 10, 2010

Camera Obscura..


The camera obscura (Latin; "camera" is a "vaulted chamber/room" + "obscura" means "dark"= "darkened chamber/room") is an optical device that projects an image of its surroundings on a screen. It is used in drawing and for entertainment, and was one of the inventions that led to photography. The device consists of a box or room with a hole in one side. Light from an external scene passes through the hole and strikes a surface inside where it is reproduced, upside-down, but with colour and perspective preserved. The image can be projected onto paper, and can then be traced to produce a highly accurate representation.


History

The pinhole camera and camera obscura are sometimes credited to Ibn al-Haytham (Alhazen, 965–1039 AD) [4][verification needed] for the first clear description[5] and correct analysis[6] of the device and for first describing how an image is formed in the eye using the camera obscura as an analogy.[7][verification needed]
However, camera obscura was known to earlier scholars since the time of Mozi and Aristotle.[8] Euclid's Optics (ca 300 BC), presupposed the camera obscura as a demonstration that light travels in straight lines.[9] When Ibn al-Haytham began experimenting with the camera obscura phenomenon, he stated (in Latin translation), Et nos non inventimus ita, "we did not invent this".[10]
In the 4th century BC, Aristotle noted that "sunlight travelling through small openings between the leaves of a tree, the holes of a sieve, the openings wickerwork, and even interlaced fingers will create circular patches of light on the ground." In the 4th century AD, Theon of Alexandria observed how "candlelight passing through a pinhole will create an illuminated spot on a screen that is directly in line with the aperture and the center of the candle." In the 9th century, Al-Kindi (Alkindus) demonstrated that "light from the right side of the flame will pass through the aperture and end up on the left side of the screen, while light from the left side of the flame will pass through the aperture and end up on the right side of the screen." While these earlier scholars described the effects of a single light passing through a pinhole, none of them suggested that what is being projected onto the screen is an image of everything on the other side of the aperture. Ibn al-Haytham's Book of Optics (1021) was the first to demonstrate this with his lamp experiment where several different light sources are arranged across a large area, and he was thus the first scientist to successfully project an entire image from outdoors onto a screen indoors with the camera obscura.[11][unreliable source?]
Several decades after Ibn al-Haytham's death, the Song Dynasty Chinese scientist Shen Kuo (1031–1095) experimented with camera obscura, and was the first to apply geometrical and quantitative attributes to it in his book of 1088 AD, the Dream Pool Essays.[12][verification needed] However, Shen Kuo alluded to the fact that the Miscellaneous Morsels from Youyang written in about 840 AD by Duan Chengshi (d. 863) during the Tang Dynasty (618–907) mentioned inverting the image of a Chinese pagoda tower beside a seashore.[12] In fact, Shen makes no assertion that he was the first to experiment with such a device.[12] Shen wrote of Cheng's book: "[Miscellaneous Morsels from Youyang] said that the image of the pagoda is inverted because it is beside the sea, and that the sea has that effect. This is nonsense. It is a normal principle that the image is inverted after passing through the small hole."[12]
In 13th-century England Roger Bacon described the use of a camera obscura for the safe observation of solar eclipses.[13] Its potential as a drawing aid may have been familiar to artists by as early as the 15th century; Leonardo da Vinci (1452–1519 AD) described camera obscura in Codex Atlanticus. Johann Zahn's Oculus Artificialis Teledioptricus Sive Telescopium was published in 1685. This work contains many descriptions and diagrams, illustrations and sketches of both the camera obscura and of the magic lantern.
Camera obscura, from a manuscript of military designs. Seventeenth century, possibly Italian.
The Dutch Masters, such as Johannes Vermeer, who were hired as painters in the 17th century, were known for their magnificent attention to detail. It has been widely speculated that they made use of such a camera, but the extent of their use by artists at this period remains a matter of considerable controversy, recently revived by the Hockney-Falco thesis. The term "camera obscura" was first used by the German astronomer Johannes Kepler in 1604.[14] The English physician and author Sir Thomas Browne speculated upon the inter-related workings of optics and the camera obscura in his 1658 Discourse The Garden of Cyrus thus-
For at the eye the Pyramidal rayes from the object, receive a decussation, and so strike a second base upon the Retina or hinder coat, the proper organ of Vision; wherein the pictures from objects are represented, answerable to the paper, or wall in the dark chamber; after the decussation of the rayes at the hole of the hornycoat, and their refraction upon the Christalline humour, answering the foramen of the window, and the convex or burning-glasses, which refract the rayes that enter it.

Edited sentence..

I refuse to agree to this kind of custom, because I don't want my next generation, including my son and many children continue with this horrific tradition that I do not support; And I will never support to see as many kids and parents have to kill their own family.

Wednesday, November 3, 2010

Mizan’s Response to “One of These Days”

The story “One of These Days” is about an unauthorized Dentist and a Mayor who has a swollen tooth ache, visits the Dentist to get rid of the affected tooth. It seems the Dentist does have an internal conflict with the Mayor the way he behaves. Finally, He helps the Mayor by pulling out the painful tooth in his office.

I liked the starting sentence of the story:
“Monday dawned warm and rainless.” Because the author has begun the story in a very dramatic way with this sentence.

“Now you’ll pay for our twenty dead men.” – These words seemed irrelevant to me.

Interpretation:
 The Dentist probably has some type of conflict between the Mayor and him. Because, he has not attempted to use the anesthesia, and took out the affected tooth that resulted severe pain to the Mayor.
In practical life, sometimes we either face or create such situation which is similar to the sequence that is mentioned above. We try to make someone suffer either in a good or in a bad way. For instance, while studying on eighth grade, we had a substitute Chemistry teacher-a grouchy young lady. She was always putting us down in eyes of our school’s Principal; she was misusing her power of being a teacher. One day, we punctured her bicycle’s tire, but she was quiet though it was obvious we did it.