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What are the 5 brain frequencies? Definitions. The EEG (electroencephalograph) measures brainwaves of different frequencies within the brain. ... Recommended Books. Brain Wave Frequencies: DELTA (0.1 to 3.5 Hz) The lowest frequencies are delta. ... THETA (4-8 Hz) The next brainwave is theta. ... ALPHA (8-12 Hz) ... BETA (above 12 Hz) ... GAMMA (above 30 Hz)

Properties of Superfluids Superfluidity results in some strange phenomena that are not observed in ordinary liquids and gases. Some superfluids, such as helium-3, creep up the walls of the container, flow over the side, and eventually escape the container. This creeping behavior (film flow) actually does occur in a few normal fluids, such as alcohol and petroleum, but due to surface tension. Superfluids can pass through the walls of containers that hold liquids and gases. Stirring a superfluid produces vortices that continue to spin indefinitely. Turning a container of a superfluid does not disturb its contents. In contrast, if you rotate a cup of coffee, some of the liquid moves with the cup. A superfluid acts like a mixture of a normal fluid and a superfluid. As the temperature drops, more of the fluid is superfluid and less of it is an ordinary fluid. Some superfluids display high thermal conductivity. Compressibility varies. Some superfluids are compressible, while other have low compressibility (e.g., superfluid helium) or no compressibility (superfluid Bose Einstein condensate). Superfluidity is not associated with superconductivity. For example, superfluid He-3 and He-4 are both electrical insulators.

Superfluid A superfluid is a second liquid state formed by some types of matter. A superfluid displays zero viscosity. Superfluidity was observed for helium in 1937. Because it could flow without friction, superfluid helium climbed the walls of its container and dripped over the sides. Like Bose-Einstein condensate, superfluidity occurs near absolute zero.

Photonic Matter Photonic matter is the state of matter formed when photons interact with a gas in such a way that the photons have apparent mass and can interact with each other. Photons with apparent mass can even form photonic “molecules.”

Can water become a superfluid? When water contains a sufficient concentration of E. coli or other swimming bacteria (as in this animation), it can act like a superfluid with negative viscosity.Jul 26, 2018

Is dark matter a superfluid? The dark matter particles are axion-like, with masses of order eV. They Bose-Einstein condense into a superfluid phase in the central regions of galaxy halos. The superfluid phonon excitations in turn couple to baryons and mediate a long-range force (beyond Newtonian gravity).Sep 22, 2021