The Importance of the Past Essay Example for Free

The Importance of the Past Essay When I was 3 years old I remember my mother taking me to day-care for the first time in my life. I was scared and it was very hard for me to make friends. There I understood for first time the meaning of rather having one or two good friends than to have many of them and none of them really cherishing your friendship. That was an opinion I stuck to since and it pretty much had an effect on every one of my relationships. Every single memory and experience has an impact on our lives and builds up our personalities. Sometimes more and sometimes less, but it is still very essential what kind of things has happened to us before. For example someone who has always been mocked about some quality he or she possesses, may become very sensitive about the matter later on. Or it may be something as serious as a Freudian theory about how our childhood affects our personality when we grow older. Whatever it is and no matter how aware are people about the impact of that issue on their lives, it most certainly will affect them somehow. Why is then our past so important in development of our personalities? Well, maybe simply because the most of our thinking consists of remembering something we did couple of hours, two days or even many years ago. The more we think about something particular, the more it grows on us making the subject a part of who we are and controls what we do. The rest of the time we are dreaming or making plans for the future, and that is possible only of the construction of millions of different memories, schemes and expectations of the various outcomes. That fact makes future a very flexible thing. If eventually our future is just a combination of our past, then we have some power to make it something we crave it to be. That is achievable by trying to live our lives in the best way for us as possible. That way everybody can become a person he or she wants to see themselves like.

Paper Airfoil Aerodynamics -- physics aerodynamics

Missing figures Two basic principles of fluid dynamics underlie all objects in flight: The forces of Lift, opposing the downward acceleration of gravity, and the forces of drag due to air-resistance. Both forces, properly harnessed and controlled lead to such ingenious devices as the parachute and the helicopter. Aerodynamics, the field of fluid dynamics involving the flow of gasses, even has applications in fields as separate as the automotive industry, fire-safety, and golfing. The aerodynamics of paper airfoils, and additionally, the study of airfoils of small size and low mass are allowing the emergence of a new generation of aircraft: low-speed, affordable aircraft for a variety of uses: military reconnaissance, civilian law enforcement, and interplanetary exploration. This web-project will explore and discuss some of the fundamentals and phenomena regarding such low-speed airfoils. Constructing paper airfoils is one easy and enjoyable way to study such aerodynamics. Daniel Bernoulli, a member of the Swiss family of mathematicians, studied the dynamics of fluid flow. He is honored today with a principle of fluid flow named after him: Bernoulli?s Principle. Bernouli?s principle shows that the average velocity of an ideal fluid is directly proportional to the pressure (A force over an area) it exerts upon a surface along that flow. Figure 1.1 shows an example of a device used to measure the velocity of moving fluids utilizing this principle. A pitot-tube utilizes the differences in pressures between the stagnant air at the tip and the moving air across the opening to determine the velocity. A greater difference in pressures means a greater fluid speed. According to popular myth, Archi... ...t. Although, typically, increasing the thickness of a wing generally increases its curvature, leading to greater lift. For the case of paper airfoils, which are mostly flat, increasing the curvature of the wing leads to a loss in stability and a very large increase in drag. 5. Airfoils with shorter chord lengths typically suffer from less viscous drag than those of longer chord lengths. These wings are called high-aspect ratio wings, The aspect ratio is the ratio of the wing's wing-span to it's surface area. For paper airfoils, due to lack of rigidity at long lengths and short chord lengths it is possible for a wing to fold in on itself at speeds of sustainable flight. This typically puts an upper limit to a wing's span of only a few tens of centimeters when it is constructed of paper, and therefore most paper airfoil wings are low-aspect ratio.

Rap Music Essay

Often times when people hear about Hip Hop/Rap music, they’ll paint a picture in their heads of black men cussing, guns, marijuana, lots of gold, and girls looking like prostitutes. Parents and teachers put an image in their kid’s head that Rap music is â€Å"bad†, and they don’t want their kids to be influenced by something that is negative. With the way Rap music is advertised in the US, I would have to agree with that looking at it from an average parent’s point of view. But what people don’t know is that Hip Hop isn’t just a type of music, it’s a culture. It’s a culture full of original elements, and it’s also a place where people can show others what they’ve got and who they are. Within this original society called Hip Hop, there are basically four main elements of MC, Break, Tag, and DJ. And each is represented by millions of people all over the globe. When the four come together, it makes Hip Hop musi c, and people live the music instead of listening to it. MC-ing is what people know as rapping. The main point of an MC is to make your crowd enjoy your music, and to send a message out to them. Unlike most of the lyrics out on the market today, Hip Hop contains meaning and it sends a message to the listeners. Although those messages might have bad words, and show images of things that are socially wrong, that’s actually what’s going on where they are from, and that’s who they are. Their music represents their area and their people, and it’s no different from a farmer singing about his cows and chickens in Idaho. Besides, â€Å"Gangster Rap† isn ’t the only type of Hip Hop music, it’s actually only a small sect of it all. Many rappers put out lyrics about what they believe in, their own philosophies, entertaining others, and although it may seem unlikely, many lyricists seem like Einstein to me. Just like all of the other geniuses like Newton, Galileo, and musically Jimi, there are MCs that are geniuses too. What makes those guys remarkable compared to others are their strength and choice of words, and their flow, or the melody, of their rhymes. I personally can’t relate to the ghetto, guns, and all of that â€Å"gangster† stuff, so I don’t listen to that genre all that much, but there are many elements people can pick up from the Hip Hop music. There is a whole Japanese Hip Hop scene that is growing bigger and bigger, and that’s what I personally live. The next element is Breaking. Breaking is a term used for dancing, and most people know it as Break Dancing. Although Breaking has become a small part of the whole dance scene in Hip Hop today, it’s the first form of Hip Hop dances. People spin on their heads, do handstands, slide with just their hands on the ground, spin on the floor with their legs spread out, and all kinds of astonishing moves. This is probably the most popular form of Hip Hop in Japan today because its so easy to begin and watch. DJs have one simple task: make people dance. Or that’s what it used to be. Before, their main goal was to have the knowledge of the music so they can make people dance according to the mood and time. Also scratching records were their performance. Now, DJs have lots more jobs and probably the toughest element of all. Most DJs team up with MCs so they can act as the rhythm section of the Hip Hop performance, and to do that and be original, they must create sounds of their own. They basically make the beats and the MCs lay the words on it. The steps to be able to make beats and tracks takes lots of time, money, and mind, so most DJs don’t/can’t take a step further into the scene. Today, more and more artists are creating their own tracks, for the money, and they tend to realize that they can’t be rapping at age 40 while its perfectly normal for a 40 year old to be playing the guitar. It ’s not wrong to say that DJs are the backbones to the Hip Hop music. The final element is Tagging, and its graffiti. This is actually a controversial issue because many people believe its wrong. But it’s a form of art to the culture, and it shows character of each artist. Its definitely not just about claiming area by the gangs, and its not just about vandalizing other people’s property. People need to admit that New York City would not have its flavor that it has today without all of those artwork, and there are many artists that put up their pieces just so they can show others what they got. It’s a way of communication in the form of Hip Hop. Many other types of music can be a culture too, and each person feels if it is a culture to them or not. If music means culture to that person, then they probably feel that uneasy sensation of going to bed without music, going on the train without your Walkman, and have that anger towards vacuum  cleaners. Music also is a form of communication when there is the kind of society where people understand one another through it. Which creates influences on others, and makes music grow.

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