Physics
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February 12, 2026
Introduction: The Mystery of the Deflecting Needle If you place a magnetic needle next to a wire carrying an electric current, the needle deflects. For...
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December 31, 2025
Lecture 1: The Spinning Earth (Rotation and the Day-Night Cycle) Hello students! Have you ever noticed that tree shadows are long in the morning but...
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December 20, 2025
Introduction: Understanding That “Zap!” Have you ever taken off a synthetic sweater in dry weather and seen a tiny spark or heard a faint crackle?...
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December 20, 2025
The Everyday Mystery We have all felt it: the crackle of a synthetic sweater pulled off in the dark, the surprising jolt from a car...
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December 20, 2025
Temperature and pressure are the primary factors that determine the physical state of a substance. By altering these two conditions, matter can be interconverted between...
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December 17, 2025
1. Falling Into a Black Hole Imagine an object falling towards a black hole. As it gets closer, the immense gravity doesn’t just pull it...
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December 16, 2025
1. Why Do We Need Temperature Scales? Temperature is the reliable measure of how hot or cold an object is. While we often use our...
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October 19, 2025
When you heat a piece of metal, it begins to glow. First, a deep red, then a brighter orange, and eventually a brilliant white-hot. This...
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October 8, 2025
Introduction: Force vs Thrust Picture this: you’re watching a rocket launch. You see flames, hear the roar, and feel the ground tremble. You instinctively say,...
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September 30, 2025
We take mirrors and lenses for granted. They hang in our bathrooms, sit inside our glasses, and hide behind the tiny black dot of a...
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