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Why does Nothing Else Matters start with an open string pick? Detailed answer

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Why does Nothing Else Matters start with an open string pick?

At the beginning of the song "Nothing Else Matters" by Metallica, a plucking is heard on the open first, second, third and sixth strings. Such a compositional solution appeared due to the fact that its author James Hetfield, when he began to compose a song, held a telephone receiver with one hand and talked with his girlfriend.

Authors: Jimmy Wales, Larry Sanger

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Why do we sometimes think that the wheels of a moving car are spinning in the opposite direction?

When watching a moving car in some videos, it seems to us that its wheels are spinning backwards. This is a manifestation of the stroboscopic effect due to the inertia of vision. You can choose such a driving speed that in the time of 1/24 of a second (the standard duration of one frame of a film) the wheel makes several turns, but just barely reaches its previous position. Since the human eye is guided by the spokes of the wheel, we get the feeling that it is slowly rotating in the opposite direction. This phenomenon can also be observed in real life - for example, at night on the street, which is illuminated by lanterns with low-frequency pulsation.

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