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Superfluidity is the characteristic property of a fluid with zero viscosity which therefore flows without any loss of kinetic energy. When stirred, a superfluid forms vortices that continue to rotate indefinitely. Superfluidity occurs in two isotopes of helium ( helium-3 and helium-4) when they are liquefied by cooling to cryogenic temperatures.
Music video. "I'm So Excited" on YouTube. " I'm So Excited " is a song by American girl group the Pointer Sisters. Jointly written and composed by the sisters in collaboration with Trevor Lawrence, it was originally released in September 1982, reaching number 30 on the US Billboard Hot 100. This was followed by a remixed re-release in July 1984 ...
Quantum superposition is a fundamental principle of quantum mechanics that states that linear combinations of solutions to the Schrödinger equation are also solutions of the Schrödinger equation. This follows from the fact that the Schrödinger equation is a linear differential equation in time and position. More precisely, the state of a ...
Photoinduced electron transfer. Photoinduced electron transfer ( PET) is an excited state electron transfer process by which an excited electron is transferred from donor to acceptor. [1] [2] Due to PET a charge separation is generated, i.e., redox reaction takes place in excited state (this phenomenon is not observed in Dexter electron transfer ).
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Synchronous motor. Miniature synchronous motor used in analog clocks. The rotor is made of permanent magnet. Small synchronous motor with integral stepdown gear from a microwave oven. A synchronous electric motor is an AC electric motor in which, at steady state, [1] the rotation of the shaft is synchronized with the frequency of the supply ...
Courtesy, Cesareo de La Rosa Siqueira. In fluid dynamics, vortex shedding is an oscillating flow that takes place when a fluid such as air or water flows past a bluff (as opposed to streamlined) body at certain velocities, depending on the size and shape of the body. In this flow, vortices are created at the back of the body and detach ...
“I feel a shift from excited to super-excited,” said Annie Marszal, a Sacramento gas station owner as she and dozens of other state GOP delegates and others met at a Milwaukee museum. the day ...