sciencecapsules

       VISIT: 'MATH IN ACTION' SITE A little girl is swinging in a park. His father pushes the swing now and then.The Swing has one frequency of oscillation.The father's frequency of pushes should match that of the Swing.Than only the swing will oscillate well. Here, the phenomenon "resonance" comes into play. We will see one more example.     An opera Singer Sings in high pitch. At one point of time, a wine glass Kept on a table breaks into pieces. Here, the frequency of the Singer matches the natural frequency of the wine glass. Hence, the glass vibrates violently and breaks away. Again resonance.     In 2000, on the London millennium bridge, Some 2000 people walked on it. It caused heavy wobbling of the bridge . The Engineers shut down the bridge immediately and made Some structural modifications to dampen resonance.     So what exactly is resonance? Let us study the definition.  " phenomenon of increased amplitude that occurs when the frequency of a perio

  kannan narayanan 1 day ago · 4 min read WHY CAN,T YOU UNSCRAMBLE AN EGG? Photo by  Sarah Shull  on  Unsplash VISIT: 'MATH IN ACTION' SITE “ You cannot cool a body cooler than its surroundings” ds is greater than 0 “Energy should be greater than zero”. Disorder should increase. All above are different forms of second law of thermodynamics. Think of Mercides Benz. Its heart is “internal combustion engine”. It works because of second law of thermodynamics. In a cylinder, petrol and air is mixed ; pressed by piston; ignited. The mixture explodes, expands, and pushes the piston. The piston rotates the wheel through the lever and gear arrangement. ROLE OF SECOND LAW IN BENZ The gas mixture expands because the second law says that everything will go into disorder. The explosion insid e  the cylinder is hot and the surrounding is cold. Hence the generated heat can pass outside; the next explosion can take place, and the engine can run. An engine requires a reversible process. The rev