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Showing posts from January, 2025

Why Do We Enter One Metro Coach and Exit Another?

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Have you ever boarded a metro from one coach and found yourself exiting from a different one? It’s a common and amusing experience! Here are three possible reasons that explain why this happens: 1. Blame Inertia for the Shift Adding a fun twist to science, inertia might be the culprit! Once you’re inside the metro, the natural movement of the train or flow of passengers can subtly guide you into another coach without you realising it. 2. The Hunt for a Seat Metro rides can be long and tiring, and finding a seat often becomes the mission. While moving from coach to coach in search of a vacant spot, you might end up far from where you started. 3. Forgetting Where You Entered It’s  easy to lose track of your starting point, especially during crowded boarding. Since all metro coaches look similar, you might forget which one you entered and exit from wherever you happen to be.

Why Clocks Rotate Clockwise: A Historical Perspective

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The direction in which clock hands rotate, known as “ clockwise ” has a fascinating origin rooted in history and nature. This design choice is far from random and traces back to the earliest timekeeping methods. The Sundial Connection Clockwise rotation originates from sundials, one of the oldest timekeeping devices used by ancient civilizations like the Egyptians and Mesopotamians. These devices relied on the position of the sun to cast a shadow on a marked surface. In the northern hemisphere , the sun moves across the sky from east to west, causing the shadow on a sundial to shift in what we now recognize as a clockwise direction. When mechanical clocks were invented in Europe during the Middle Ages, they mimicked this natural motion, solidifying clockwise as the standard. Geographical Influence This convention is heavily influenced by geography. In the northern hemisphere, sundial shadows move clockwise, but in the southern hemisphere, they move counterclockwise. However, since the ...