Physics for Life
"I'm so tired of going to school." He said innocently, I looked back at him "Why are we studying Physics?" He added again. I thought for a moment, trying to think of an answer that would make him think that Physics lesson is very important, then I replied "Do you like to sleep with Tin?" Tina looked at me "Like it, where there are people who do not like sleeping!" He replied loudly, I started asking again "Iye keh? You choose to sleep softly padded what hard Tin? ". Tina wrinkled her forehead and replied "How dare, where might be hard"
Then I smiled, and began to explain "You're a soft mattress, then why do not you like to study physics? You know what if there's a soft mattress inside? That makes us jump upwards if you slam the body too hard because there is a spring force, imagine if there is no spring style, our bones cracked Tin time! ". "Yeah" Tina nodded
"That's just one example of Tin, now I ask you, how this life if not there hp? nowadays almost everyone has this one equipment. He is so small that can be comfortably placed in a pocket, but is considered to have a very large function especially to communicate. It's a cell phone (cell phone). Currently the phone is not only used for calling but also for other functions such as sending and receiving text messages (sms), listening to music, or taking photos. How can mobile devices connect with other mobile devices when they are far apart? The concept that can explain this phenomenon is the concept of electromagnetic waves Tin! "I shouted," well wah ya right len "Tina replied firmly.
"But if you learn that like the rays, emang there is importance?" Tina asked. "There's dong! For example x-ray, x-ray is the use of medical imaging to know the structure of human tissue without surgery first. This discovery is also the starting point of the development of medical physics in the world, which concentrates the application of physics in the field of medicine. "I replied with a smile
Soon, Andik stared at us and joined in hearing my explanation, soon he asked the first question. "What is the application of newton law 1?", "If we are in a car when the car suddenly forward our bodies suddenly pushed back" I replied briefly. "If it's a fluid chapter app?" He asked again. "Ever did you ask your grandma how she traveled? How much distance did he take and how long did he take the trip? If you ask me, I'm sure if your grandmother would tell you at length if she used to walk everywhere and could spend days just to travel a distance that is not too far needed to bring provision and preparation. But now? Thanks to the fluid we can get on an airplane! Cool is not it ?! "I said at length. Andik then smiled as he said "yes right"
"Do you ever feel uncomfortable if you die a lamp?" I asked Andik and Tina. "Increasingly, already hot, spooky again" they replied. "Faraday devised an equation of how to generate electricity through a magnetic field. It is so useful that we can now build Power Plants. With electricity the world is changing. Night becomes bright, lonely becomes lively, spooky becomes fun. Yes, electricity has succeeded in realizing fairy tales that tell of the beauty of the night in the land of the dwarves. Electricity has made that extraordinary news if we convey this to the deceased ancestors who live in a dark state. "I replied again. "Alay lo" spouted Andik.
"I do not agree!" Sera exclaimed suddenly that suddenly made us all surprised. "Our Tampa physics can still live" he added. I stared at him in confusion and began to explain again "Ever imagine if you go to school for 20 km and you walk on foot? I'm sure you do not want to. So we are lucky to have been in this extraordinary time when thermodynamics became a branch of science that increasingly perfect themselves. Through the laws of thermodynamics we can enjoy the ease of life with motorcycles, cars, and various machines that exist today. No need to get tired of stepping. Even with this law of thermodynamics life will taste even better. "
Because Sera seems to believe, I add again "have you ever been hot in the sweat and then into the air-conditioned room then served cold drinks from the fridge? If you have experienced the incident so you should be grateful for the establishment of thermodynamic law. Because through the law we can enjoy the temperature in accordance with the wishes. So, are we still blasphemical physics with blasphemy that physics is a complicated and useless science after we can enjoy life with the help of physics? "I asked them. Sera looked at me irritably "Not enough evidence of why we should learn physics!" He exclaimed
"Why are not we free?" I asked Sera. He looked at me sharply. "Because the atom bomb if I think is a blessing for Indonesia. If the atomic bomb did not explode you were convinced that Indonesia could escape from the Japanese occupation on August 17, 1945? Therefore we should be grateful to E. Fermi who has been able to take advantage of nuclear activities. Yes, maybe the atom bomb is no longer useful but can nuclear no longer be utilized? Of course still, with nuclear we can have a tremendous energy source. Conventional nuclear energy alone from one uranium can produce about 200 MeV of energy trying to compare it with the energy of carbon that is only 4 eV! Nuclear is a remarkable thing for the future and the present. An incredible energy source for the continuity of energy cycles in the world, "I said again.
"A few more examples from the pressure chapter app, have not you seen the bottom of soccer shoes? Why are there some spikes on the bottom of the shoe? it turns out, the nails are aimed at putting great pressure on the ground so that a football player is not easy to slip. Secondly, to keep people from falling into the snow, the pressure on the snow must be minimized. How, by using a base that is wider than the footwear. By using a ski board, one can slide on the snow without fear of falling. Pressure can be minimized by using a ski board while sliding over the snow. And third, marine vessels can float on the surface of the water due to a cavity inside the ship's body. This air-filled cavity is able to move large volumes of water, the ship will get an upward force that matches the weight of the ship. Upward force is able to hold the ship remained on the water surface. What about the spikes? A small nail will get an upward force that is smaller than the weight of the nail so that the nails will sink. "My story is long.
Tina, Andik and Sera lowered their heads, "it seems like if physics is really important, I'm sorry," Sera said. Andik and Tina corrected. It is selfish that today's students think that learning physics is not important, because actually learning physics is very exciting and exciting!
