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Overview
Algebrica is a free mathematics site with about 250 entries — sets, groups, trigonometry, limits, integrals, probability — written by one person, Antonio Lupetti, with every figure drawn by hand and released as an editable SVG. No ads, no accounts, no streaks.
News
The Best Calculators for Calculus Students
When you are working through derivatives and integrals, the machine's job is not to hand you the answer. It is to let you see the thing you are thinking about.Read on Abakcus
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Dirac's Handwritten Thesis
The first doctoral thesis ever written on quantum mechanics is called nothing more than Quantum Mechanics, and all of it is in ink, in longhand, with the crossings-out left in.Read on Abakcus
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16 Fascinating Facts About Christopher Nolan's Oppenheimer
A film that builds three hours of tension out of a physicist walking through rooms and arguing with people. What went on behind the screen is every bit as interesting as what ended up on it.Read on Abakcus
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Words You Can Spell With a Calculator
Type 07734, turn the calculator upside down, and it says hello. Nobody designed this. It simply happened, and it has been played under school desks for fifty years.Read on Abakcus
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Why a Cat Always Lands on Its Feet
In 1894 Étienne-Jules Marey dropped a cat in front of a camera and settled the most stubborn physics argument of the nineteenth century. The cat turns inside itself without turning overall.Read on Abakcus
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