Thursday, May 3, 2018

discrete signals - How do I explain a complex exponential intuitively?


What is a complex exponential, explained intuitively? How do I explain to an adolescent a complex exponential function?




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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

Apparently the of last four, $\ce{Mg^2+}$ is closest in radius to $\ce{Li+}$. Is this true, and if so, why would a whole larger shell ($\ce{...