Tuesday, July 19, 2022

๐ŸŒŒ Self-Portrait, Paris, spring or summer 1887. Oil on cardboard, 41 x 33 cm. Van Gogh Museum, Amsterdam ⏩

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Tuesday, July 12, 2022

♞ Spring Constant for Half the Length of the Spring ⚠️

If the entire spring has a spring constant k, then the half of the spring has twice the spring constant: 2k.