Knowledge for you

When a supersonic jet travels faster than the speed of sound, the loud sound produced is called the metaphor of the sound barrier breaking sound. If the speed of the aircraft exceeds the sound barrier, that is, 1200 km, the air friction increases dramatically. Then it feels like a plane is hitting a wall. Until 1947, humans were convinced that no human could complete a journey faster than the speed of sound without injury. Rather, it is impossible to go faster than the speed of sound. In 1947, an American pilot made this impossible possible by traveling at the speed of sound on a Bell X-1 rocket plane. When an object, such as an airplane, flies in the air, it is exposed to air friction. If the speed of the aircraft exceeds the sound barrier, ie 1200 km, the air friction increases dramatically. We call it the Sound Barrier. Remember that the speed of breaking the sound barrier is determined by the weather and altitude. This speed is usually above 1239 kmph. In this case, when something moves faster than this speed, a loud explosion-type sound is produced, which we call the breaking of the sound barrier. In the pictures below you can see the scattered state of the air molecules after the sound barrier is broken. Most of us haven't seen it crash, but we must have heard it in the form of a loud explosion while flying a plane. We call it the Sank Boom. Why does this sound? Normally, pressure waves or sound waves are in front of us, but as soon as we try to travel faster than the speed of sound, these waves produce such sound. We can call it the Sank Boom. Share Report Download Report

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A tour of KARACHI

 A tour of Karachi. Recently we had to go to Karachi for the wedding. The wedding was arranged in a separate house for us. Where we felt calm. We ate rice for lunch. There was a henna ceremony at night.  We left for Nawabshah with Barat. We got married and then we had dinner. And then the journey back to Karachi started. And we all reached Karachi in good health. And then we attended Williama on Saturday night. The next day  We reached Johar Chowrangi. We stayed there for two days. We went to the park. We did some shopping. We had dinner at the hotel. Then we came back to the flat. We also had to go to Dow Medical Center. There were some medical tests to be done.  After that we returned to our village. The journey of the air conditioned coach was wonderful. You can also see some pictures of this tour below. Welcome. 

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