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UNITS- Q uestion you need ton first understand the meaning of science. Science means MEASUREMENTS. In every field of science we do measurements, science only cares about measuring things. That means the things have to be observable. That’s why in science we don’t take care about FEELINGS. Because we can’t measure feelings. Now as we measure something, we need to represent it in some notation to identify or distinguish between quantities. Because whatever we measure it’s just number, if I say you the speed is 5. What info can you tell about 5, it’s just a number, it nothing tells you about anything related to speed. So you need to specify specific quantities to extract info. Actually speed refers to unit distance travel in unit seconds. So the unit distance can be shown in centimeters, meters, and kilometers. Generally we show distances in meters because it acceptable internationally and it is general notation we use in physics. So the (SI) unit of speed is meters per second. So, yo

" INTRODUCTION " IN physics many people wonders how physics really can tell about the things which we are surrounding by. Many people try to know that how physics works in their daily life. How physicist really can do physics? In this blog i am going to discuss some insight of the discoveries done by great people in scientific history which has changed the archaic thinking pattern of people and even scientist. We have stepped into the modern realm of science and technology where thinking patterns are so different and ideas that explain the behavior  is so weird, but they follow the basic physics and mathematics that opens the realm of modern theory of nature. How nature works in beyond our reach of imagination. And these superb ideas and experiments have stretched our understanding of nature that sometimes or very often scientist says that, omg! This can't happen. Something wrong is going on in our experiment. But the fact is fact. And nobody can change it. It’s not