Why is it easier to tear paper along a crease?
To word it differently: why does a "tear" progress along a crease, if one is present?
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Sometimes I am born in silence, Other times, no. I am unseen, But I make my presence known. In time, I fade without a trace. I harm no one, ...
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I want to know what happens to the space a black hole crosses over as our galaxy travels through space.
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