Most of us probably taken it for granted that our smartphones can tell up from down, but we probably only have the vaguest idea how. If pressed, we might mutter something about “accelerometers” and then try to change the subject. However, Bill Hammack is here to explain not only how your phone manages to be spatially aware, but his infectious enthusiasm will surely make you think that the humble smartphone accelerometer is one of the greatest achievements of mankind.
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