10 things to do on the first day of school… « What Ed Said - 3 views
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Leigh Newton on 22 Jan 11Setting up a class to think, talk, learn, create...
"[In] quantum mechanics a vacuum is not empty, but it's filled with particles that are living on borrowed time and borrowed energy," he said.
"So our simplest idea about dark energy is that it is just the quantum energy of nothing.