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cosmological    
a. 宇宙哲学的,宇宙论的

宇宙哲学的,宇宙论的

cosmological
adj 1: pertaining to the branch of astronomy dealing with the
origin and history and structure and dynamics of the
universe; "cosmologic science"; "cosmological redshift";
"cosmogonic theories of the origin of the universe" [synonym:
{cosmologic}, {cosmological}, {cosmogonic},
{cosmogonical}, {cosmogenic}]
2: pertaining to the branch of philosophy dealing with the
elements and laws and especially the characteristics of the
universe such as space and time and causality; "cosmologic
philosophy"; "a cosmological argument is an argument that the
universe demands the admission of an adequate external cause
which is God" [synonym: {cosmologic}, {cosmological}]


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  • All About the Einstein Field Equations - Physics Forums
    Tiny Numbers, Big Effects: The cosmological constant () in the EFE, originally introduced by Einstein to allow for a static universe, is estimated at less than It’s small but drives the accelerated expansion of the universe! Weak-Field Limit: The EFE include Newton’s law of gravity as a special case!
  • How does the symbol Λ cosmological constant relate to Ω_Λ or ρ_Λ?
    The discussion explores the relationship between the cosmological constant (Λ) and the density parameters Ω_Λ and ρ_Λ within the context of cosmology, specifically in relation to the Friedmann equations Participants seek to clarify the physical implications of these concepts and how they are mathematically connected Some participants note that Ω_Λ is a term in the Friedmann equation
  • Does the Cosmological Principle in any way underpin Big Bang Theory . . .
    Does the Cosmological Principle have any role in underpinning Big Bang Theory? The hypothesis of the expansion of the universe is based on two assumptions: the theory of general relativity and the cosmological principle Subsequently it was determined by observations that, at very large scales, the cosmological principle holds
  • Spatial Curvature in Cosmological Models - Physics Forums
    Standard cosmological models are classified by spatial curvature into three broad types: open, flat, and closed universes These correspond to negative, zero, and positive spatial curvature respectively, and each case has distinct implications for the geometry and global volume of space
  • Light speed and cosmological constant - Physics Forums
    The cosmological constant is a factor in Einstein's General Relativity theory Einstein introduced it (with little justification, if I understand aright) when someone realized that the equations of General Relativity implied the existence of a Big Bang
  • Derivation of the formula for cosmological redshift
    I was hoping somebody could point me towards a derivation of the following formula for cosmological redshift: z = R(t0) R(te)-1 Wikipedia just presents the formula as a fait accompli and the only explanation is a vague reference to "stretched photons", which is not helpful I was
  • The Units of the Cosmological Constant: eV^2 - Physics Forums
    The discussion revolves around the units of the cosmological constant, specifically the claim that it should be measured in e V 2 rather than e V 4 Participants explore the implications of different interpretations of the cosmological constant and its relation to energy density
  • Deriving the Cosmological Constant - Physics Forums
    Discussion Overview The discussion revolves around the derivation of the Cosmological Constant (Λ) within the context of the Einstein field equations and its implications in cosmology Participants explore various methods of deriving Λ, including its appearance in the Friedmann equation and its relationship to energy density Discussion Character Exploratory Technical explanation Debate
  • Schwarzchild solution with cosmological constant - Physics Forums
    The discussion revolves around solving for the Schwarzschild solution with a cosmological constant, exploring the mathematical framework and implications of such a solution Participants engage with concepts related to non-linear equations and the derivation of metric components in the context of general relativity One participant expresses uncertainty about solving non-linear equations and
  • Sigma_8 and n_s Cosmological Parameters - Physics Forums
    The discussion focuses on the cosmological parameters σ8 and n_s, which are critical in galaxy clustering studies σ8 represents the amplitude of the matter power spectrum on a scale of 8 Mpc h, reflecting the formation of large-scale structures in the universe n_s, the spectral index of the scalar power spectrum, is defined by the equation P (k) ∼ k^ {n_s -1} Both parameters are





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