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Earth's last magnetic field reversal took far longer than once thought（图）
Earth magnetic field reversal took longer once thought
2019/10/21
Earth's magnetic field seems steady and true -- reliable enough to navigate by. Yet, largely hidden from daily life, the field drifts, waxes and wanes.The magnetic North Pole is currently shifting tow...
Purdue researchers observe phase transition thought impossible
Purdue researchers phase transition thought impossible
2015/11/12
An ultrapure material taken to pressures greater than that in the depths of the ocean and chilled to temperatures colder than outer space has revealed an unexpected phase transition that crosses two d...
Coincident-Frequency Entangled Photons in a Homogenous Gravitational Field - A Thought Experiment
Coincident-Frequency Entangled Photons Homogenous Gravitational Field - A
2010/12/20
Assuming that the Principle of energy conservation holds for coincident-frequency entangled pho-tons propagating in a homogeneous gravitational field. It is argued that in this physical context,either...
The claim that the observation of a violation of a Bell inequality leads to an alleged alternative between nonlocality and non-realism is annoying because of the vagueness of the second term.