Although the evidence is still limited, a growing body of research suggests music may have beneficial effects for diseases such as Parkinson’s.
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- Fig. 1.
A possible phase diagram for hydrogen, showing the theoretical melting line and the plasma-phase transition line. At lower temperatures in the solid, three phases are observed: hexagonal close packed (HCP), the broken symmetry phase (BSP), and the hydrgrogen A phase (sometimes called I, II, and III). Hydrogen may be liquid-atomic metallic at very high pressure and T = 0 K, shown by the extrapolations (dotted lines). At even higher pressures, the atomic liquid would solidify. A single shock wave generates points on the primary Hugoniot, with very high temperatures but modest pressures; higher pressures and lower temperatures are achieved off-Hugoniot with a reverberating shock wave. The dash-dot line is an isochore.
The insulator-metal transition in hydrogen
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