## Monday, January 20, 2020

### The Physics of Space Shuttle Re-Entry :: physics science space

When in orbit the shuttle is positioned so that it is moving nose-first and the top of the shuttle is pointing towards the earth. The shuttle is positioned "bottom up" so that the black bottom will radiate the heat from the sun more effeciently. Step one for the shuttle is to turn around so that it is moving stern-first and then it fires it's engines in order to slow the shuttle so that it will drop out of orbit. Next the shuttle flips over so that it is right-side-up when it enters the atmosphere. Between step three and four the shuttle burns any excess fuel that it may still have so that there is less of a danger of explosion when the fuel tanks get hot durring re-entry. Step four is where the shuttle maintains an angle of about 40 degrees from the vertical and maintains an approach so that the shuttle slows down. After slowing to a speed where the shuttle can maneuver it will "fly" (remember, the shuttle has no more fuel so it has only one chance to land) in some final S shaped cu rves to slow some more and then land at a designated airport (as shown below). How Does the Shuttle Turn or Maneuver in Space? The basic means of movement for the space shuttle can be explained in Isaac Newton's laws F=Ma and for every action, there is an equal and oposite reaction. The force, on the space shuttle, is equal to the mass of the shuttle multiplied by its acceleration. By burning fuel in a rocket engine on the back of the shuttle, a force on the shuttle equal to the mass of fuel being "thrown" out the stern of the craft multiplied by its acceleration. This basic physics formula is very important to the shuttle getting up into space and to the beginning of its deceleration on its return to earth. Thus it has a very real impact on weather the shuttle will survive the trip through the earth's atmosphere back to land. When the shuttle first enters the earth's atmosphere it is traveling at speeds topping 30,000 km/h. The shuttle has to decelerate to 0 km/h after it lands. The acceleration that it must endure to slow the shuttle is an incredibly large force on the structure of the craft. When the shuttle is entering the atmosphere it must enter at an angle window of only a few degrees.

## Sunday, January 12, 2020

### Bangle Sellers

The poem Ã¢â‚¬Å"Bangle SellersÃ¢â‚¬  was first published in the year 1912 by Sarojini Naidu in her collection of poems called Ã¢â‚¬Å"The Bird of Time. Ã¢â‚¬  A group of bangle sellers is on its way to the temple fair to sell their bangles. One of them is the narrator of this poem. They are an impoverished and marginalized group of people whose income from the sales of their bangles is at the best of times uncertain and very meagre. However the bangles they sell are of religious and symbolic importance: no Indian widow is permitted to wear bangles. Hence the wearing of bangles is considered to be very auspicious and of symbolic value bordering on the religious. What is of great significance in the poem is that the bangle seller does not say a word about his/her poverty, nor does he/she say anything about the profit that he/she intends to make by selling his/her bangles at the temple fair where he/she will certainly do roaring sales. On the contrary he/she only concentrates on the human element of the product he/she is going to sell at the temple fair: Who will buy these delicate, bright Rainbow-tinted circles of light? Lustrous tokens of radiant lives, For happy daughters and happy wives. Sarojini Naidu has foregrounded the auspiciousness and the symbolic value of the custom of wearing bangles by repeating Ã¢â‚¬Å"happy. Ã¢â‚¬  The Ã¢â‚¬Ëœhappy' daughters look forward to their marital bliss while the Ã¢â‚¬Ëœhappy' wives are content and glory in the fulfillment which is a result of their marital status. Each of the next three stanzas deal with the three stages in the life of of an average Indian woman Ã¢â‚¬â€œ a virgin maiden, an expectant bride and finally a mature matriarch. The bangles are of many colors. However, each stage in an Indian woman's life s described lyrically and appropriately according to the colour of the bangle suitable to that stage:for the maiden virgin who is always dreaming of a happily married life it is a misty silver and blue, for the expectant and passionate bride it is a golden yellow, and for the mature matriarch it is a Ã¢â‚¬Å"purple and gold flecked grey. Ã¢â‚¬  Simil arly Sarojini Naidu very poetically describes the longings of an Indian woman according to each stage of her life: the virgin maiden is carrying in her heart countless dreams of her future married life and she is compared to a Ã¢â‚¬Å"bud that dreams. The young bride is described as brimming over with passionate desire although she is nervous about what the future holds for her as she leaves her parental home Ã¢â‚¬â€œ Ã¢â‚¬Å"bridal laughter and bridal tear. Ã¢â‚¬  Finally, she describes the proud and faithful matriarch who has attained fulfillment by successfully rearing her sons Ã¢â‚¬â€œ Ã¢â‚¬Å"serves her house in fruitful pride -Ã¢â‚¬  and hence is permitted to take her rightful place by the side of her husband in all the domestic religious rituals.

## Wednesday, December 18, 2019

### Comparing Dante s Inferno And Virgil s The Aeneid

There are many similarities between DanteÃ¢â‚¬â„¢s The Inferno and VirgilÃ¢â‚¬â„¢s The Aeneid, be it their characterizations or descriptive imagery, but foremost in their ideas of what the afterlife consisted of. Each each epic hero in the works here have descended in to the depths of hell, with The Inferno depicting DanteÃ¢â‚¬â„¢s descent into the depths of hell and with Virgil in Book VI of The Aeneid depicting AeneasÃ¢â‚¬â„¢s decent into hell. It can be argued that although different, the knowledge acquired by each characterÃ¢â‚¬â„¢s descent was equally important to accomplishing their greater tasks at the ends of their journey. Had their descent into hell been skipped their outcomes would have concluded in a different way because their voyages to Hell each played a crucial role in the advancing each narrative. The Aeneid is a grand chronicle that charts AeneasÃ¢â‚¬â„¢ obstacles versus his accomplishments. AeneasÃ¢â‚¬â„¢s accomplishments entail escaping JunoÃ¢â‚¬â„¢s wrath; leaving and finding love; and losing loved ones in war. Against all odds, Aeneas continued to achieve victory over all his potential downfalls. With some divine assistance, Aeneas continued to achieve victory over all his potential downfalls. With some divine assistance, Aeneas recognizes his need to help midway through his journey and needs to speak with his father, Anchises. In Book VI, he asks the Sibyl to grant him access into the underworld. AeneasÃ¢â‚¬â„¢ journey leads him to many discoveries. He discovers Leucaspis and Orontes are among Ã¢â‚¬Å"all in the nearby