Free Essays on Describe a Personal Experience

Describe An Issue of Personal Concern I am violently warring for peace. I know this is a paradox, and I'm rather proud because it is true. Passivity has been a lifelong threat, laziness a constant lure in my search for identity. This world begs me to succumb to existing in the image of someone else, it asks only that I slip silently and blindly into the niche it provides instead of carving my own. I required a long time to work up courage to fight for the serenity I had glimpsed in hot summer woods and in lovingly handled books read late until the early morning. Doubt had established itself in my mind at some early age, when or why I do not know, and I could trust any person or group more than myself. Doubt begat fear, and fear gave birth to obscuring myself from the eyes of the world while I was a child. Now, I am dedicated to the fight, after over five years of fear and immobility. I rejected the easiest way out of life, and demanded truth. I strengthened my body as I strengthened my mind against the attacks I faced. When I was fifteen I started Tae Kwon Do, the martial arts class that was offered through my school. I learned more about blocking, kicking, and punching in the first two weeks of that class than I had known my entire life. My once powerless body, petite and thin, could knock the wind out of someone with a well placed punch, and I could kick people taller than me in the head. So what I could do, I did, and now my friends instinctively block when they see me grin mischievously in their direction. I am content to know I have taught them something useful. Last spring for the third time in a row, I shakily accepted my teacher's hand as he congratulated me on second place in women's division sparring. It was a bittersweet triumph, three times now I have lost to the same girl. She has become an icon for everything I wish to triumph over in this world. She is beautiful, hair like black silk, impeccable taste in clothing,m... Free Essays on Describe a Personal Experience Free Essays on Describe a Personal Experience Describe An Issue of Personal Concern I am violently warring for peace. I know this is a paradox, and I'm rather proud because it is true. Passivity has been a lifelong threat, laziness a constant lure in my search for identity. This world begs me to succumb to existing in the image of someone else, it asks only that I slip silently and blindly into the niche it provides instead of carving my own. I required a long time to work up courage to fight for the serenity I had glimpsed in hot summer woods and in lovingly handled books read late until the early morning. Doubt had established itself in my mind at some early age, when or why I do not know, and I could trust any person or group more than myself. Doubt begat fear, and fear gave birth to obscuring myself from the eyes of the world while I was a child. Now, I am dedicated to the fight, after over five years of fear and immobility. I rejected the easiest way out of life, and demanded truth. I strengthened my body as I strengthened my mind against the attacks I faced. When I was fifteen I started Tae Kwon Do, the martial arts class that was offered through my school. I learned more about blocking, kicking, and punching in the first two weeks of that class than I had known my entire life. My once powerless body, petite and thin, could knock the wind out of someone with a well placed punch, and I could kick people taller than me in the head. So what I could do, I did, and now my friends instinctively block when they see me grin mischievously in their direction. I am content to know I have taught them something useful. Last spring for the third time in a row, I shakily accepted my teacher's hand as he congratulated me on second place in women's division sparring. It was a bittersweet triumph, three times now I have lost to the same girl. She has become an icon for everything I wish to triumph over in this world. She is beautiful, hair like black silk, impeccable taste in clothing,m...

Astronomy 101 - Learning About Stars

Astronomy 101 - Learning About Stars Astronomers are often asked about objects in the cosmos and how they came to be. Stars, in particular, fascinate many people, particularly because we can look out on a dark night and see so many of them. So, what are they? Stars are massive shining spheres of hot gas. Those stars you see with your naked eye in the night sky all belong to the Milky Way Galaxy, the huge system of stars that contains our solar system. There are around 5,000 stars which can be seen with the naked eye, though not all stars are visible at all times and places. With a small telescope, hundreds of thousands of stars can be seen. Larger telescopes can show millions of galaxies, which can have upwards of a trillion or more stars. There are more than 1 x 1022 stars in the universe (10,000,000,000,000,000,000,000). Many are so large that if they took our Suns place, they would engulf Earth, Mars, Jupiter, and Saturn. Others, called white dwarf stars, are around the size of Earth, and neutron stars are less than about 16 kilometers (10 miles) in diameter. Our Sun is about 93 million miles from Earth, 1 astronomical Unit (AU). The difference in its appearance from the stars visible in the night sky is due to its close proximity. The next closest star is Proxima Centauri, 4.2 light-years (40.1 trillion kilometers (20 trillion miles) from Earth. Stars come in a wide variety of colors, ranging from deep red, through orange and yellow to an intense white-blue. The color of a star depends on its temperature. Cooler stars tend to be red, while the hottest ones are blue. Stars are classified many ways, including by their brightness. They are also divided into brightness groups, which are called magnitudes. Each star magnitude is 2.5 times brighter than the next lower star. The brightest stars now represented by negative numbers and they can be dimmer than 31st magnitude.   Stars - Stars - Stars Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars (oxygen, carbon, neon, and nitrogen) are only present in very small quantities. Despite the frequent use of phrases like the emptiness of space, space is actually full of gases and dust. This material gets compressed by collisions and blast waves from exploding stars, causing lumps of matter to form. If the gravity of these protostellar objects is strong enough, they can pull in other matter for fuels. As they continue to compress, their internal temperatures rise to the point where hydrogen ignites in thermonuclear fusion. While the gravity continues pulling, trying to collapse the star into the smallest possible size, the fusion stabilizes it, preventing further contraction. Thus, a great struggle ensues for the life of the star, as each force continues to push or pull. How Do Stars Produce Light, Heat, and Energy? There are a number of different processes (thermonuclear fusion) which make stars produce light, heat and energy. The most common happens when four hydrogen atoms combine into a helium atom. This releases energy, which is converted to light and heat. Eventually, most of the fuel, hydrogen, is exhausted. As the fuel begins to run out, the strength of the thermonuclear fusion reaction declines. Soon (relatively speaking), gravity will win and the star will collapse under its own weight. At that time, it becomes what is known as a white dwarf. As the fuel further depletes and reaction stops all together, it will collapse further, into a black dwarf. This process can take billions and billions of years to complete. Toward the end of the twentieth century, astronomers began to discover planets orbiting other stars. Because planets are so much smaller and fainter than stars, they are difficult to detect and impossible to see, so how do scientists find them? They measure tiny wobbles in a star’s motion caused by the gravitational pull of the planets. Although no Earth-like planets have been discovered yet, scientists are hopeful. Next lesson, well take a closer look at some of these balls of gas.