Mathematics insights presented through animations, formulas, pictures, graphics, quotes, books, history, and memes. DM for inquiries.
Shorts
(a + b + c)² = a² + b² + c² + 2(ab + ac + bc)
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Unrolling Euler's Formula.
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A plane sliding through a double cone traces every conic section.
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You Can Watch Euler's Formula, Unrolled.
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Sine and Cosine waves are...nothing but the shadows of a spinning circle.
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The Geometry of Integration by Parts.
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The distance a circle travels in a single revolution without slipping equals π times its diameter, regardless of the wheel's size.
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At any point on a curve, there's one circle that fits the curve better than any other. It touches the curve at that point, leans in the same direction, and bends by the same amount. It tells you how sharply the curve is bending at that exact spot, and which way it's leaning. If the curve is bending sharply, the circle is small. If the curve is nearly straight, the circle is huge. The osculating circle of the curve.
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Rotation Matrices in Motion.
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The Beautiful Gaussian Integral.
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The Hidden Geometry of Trigonometric Functions and the Unit Circle.
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The difference between Δy/Δx and dy/dx.
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In 1963, mathematician Stanislaw Ulam got bored during a meeting and started doodling a grid spiral of sequential numbers. By highlighting only the primes, he uncovered what remains one of the most mesmerising visual mysteries in number theory: the Ulam Spiral.
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Viviani’s Theorem, named after the Italian mathematician Vincenzo Viviani, states that for any point inside an equilateral triangle, the sum of the perpendicular distances from the point to the three sides is always equal to the altitude (height) of the triangle.
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a² - b² = (a+b)(a-b)
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The Geometry of Square Waves.
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The Fibonacci’s Elephant.🐘
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A circle is secretly a triangle!
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The Basics of Electromagnetic Waves: Electricity and magnetism can sit still, like static electricity in your hair or a magnet stuck to your fridge. But when they move and change, they actually create each other. Together, they team up to form invisible ripples of energy called electromagnetic waves. Unlike ocean waves or sound waves, which need water or air to ripple through, electromagnetic waves don't need any material at all. They can easily travel through the completely empty vacuum of space. Maxwell's Big Idea: In the 1860s and 1870s, a Scottish scientist named James Clerk Maxwell figured out how this works. He wrote down the math showing exactly how electricity and magnetism link together to make these travelling waves. Today, scientists call his famous rules Maxwell's Equations. Hertz Proves It: Later, a German physicist named Heinrich Hertz took Maxwell's ideas and brought them to life. He was the first person to actually create and catch radio waves. To honour his work, we use the word hertz to measure how fast a wave vibrates (one cycle per second). Hertz's experiments proved two massive ideas: Radio waves are just invisible light: He showed that radio waves travel at the exact same speed as light, proving that they are actually a form of light we just can't see. Going wireless: He finally figured out how to detach these energy fields from physical wires, allowing the waves to fly freely through the air exactly as Maxwell had predicted.
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Visualization of equation: 1 + tan² (θ) = sec² (θ).