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Poetic Diction is a style of writing in poetry which encompasses vocabulary, phrasing, and grammatical usage. Along with syntax, poetic diction functions in the setting the tone, mood, and atmosphere of a poem to convey the poet's intention. Poetic devices shape a poem and its meanings.
Although superfluid helium-3 only exists within a few thousandths of a degree of absolute zero, boojums have also been observed forming in various liquid crystals, [1] which exist at a far broader range of temperatures. The boojum was named by N. David Mermin of Cornell University in 1976. He was inspired by Lewis Carroll's poem The Hunting of ...
Superfluid vacuum theory (SVT) is an approach in theoretical physics and quantum mechanics where the physical vacuum is viewed as superfluid. [citation needed] The ultimate goal of the approach is to develop scientific models that unify quantum mechanics (describing three of the four known fundamental interactions) with gravity.
Fermionic condensates are attained at lower temperatures than Bose–Einstein condensates. Fermionic condensates are a type of superfluid.As the name suggests, a superfluid possesses fluid properties similar to those possessed by ordinary liquids and gases, such as the lack of a definite shape and the ability to flow in response to applied forces.
Superfluid helium. Superfluid is the state of matter that exhibits frictionless flow, zero viscosity, also known as inviscid flow. [4] To date, helium is the only fluid to exhibit superfluidity that has been discovered. Helium-4 becomes a superfluid once it is cooled to below 2.2K, a point known as the lambda point. [13]
The superfluid is characterized by long-range phase coherence, a spontaneous breaking of the Hamiltonian's continuous () symmetry, a non-zero compressibility and superfluid susceptibility. At non-zero temperature, in certain parameter regimes a regular fluid phase appears that does not break the U ( 1 ) {\displaystyle U(1)} symmetry and does ...
In his work Poetics, Aristotle defines an epic as one of the forms of poetry, contrasted with lyric poetry and drama (in the form of tragedy and comedy). [12] Epic poetry agrees with Tragedy in so far as it is an imitation in verse of characters of a higher type. They differ in that Epic poetry admits but one kind of meter and is narrative in form.
Second sound has been observed in solid 4 He and 3 He, [16] [17] and in some dielectric solids such as Bi in the temperature range of 1.2 to 4.0 K with a velocity of 780 ± 50 m/s, [18] or solid sodium fluoride (NaF) around 10 to 20 K. [19] In 2021 this effect was observed in a BKT superfluid [20] as well as in a germanium semiconductor [21] [22]