Physicist Ranga Dias and his colleagues have twice claimed to make a room-temperature superconductor. But many researchers question the evidence. Physicist Ranga Dias and his colleagues have twice claimed to make a room-temperature superconductor. But many researchers question the evidence.
Back around 1960, at school I enjoyed a laboratory lecture on liquid nitrogen, watching a deep frozen squash ball being shattered at a temperature well below that at which it turns from a rubber into a glass, and then seeing a nail being driven into a block of wood with a hammer whose head was made of frozen mercury. The repeated impacts left
Inmates who were transferred from their prison cells to the war s front lines with the Wagner Group of private mercenaries say they have witnessed public executions.
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