An Etymological Dictionary of Astronomy and Astrophysics
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Same as → Einstein model.

→ Einstein; → theory; → specific heat.

Same as → geodetic precession.

→ Einstein-de Sitter Universe; → effect.

The → Friedmann-Lemaitre model of → expanding Universe that only contains matter and in which space is → Euclidean (Ω_M > 0, Ω_R = 0, Ω_Λ = 0, k = 0). The Universe will expand at a decreasing rate for ever.

→ Einstein; de Sitter, after the Dutch mathematician and physicist Willem de Sitter (1872-1934) who worked out the model in 1917; → Universe.

In → general relativity, the → action that yields → Einstein's field equations. It is expressed by:
S_{EH = (1/2κ)∫d⁴x (-g)^1/2R + S^m,
where κ ≡ 8πG and S^m is the matter part of the action.}

→ Einstein; → Hilbert space; → action.

→ EPR paradox.

A. Einstein, B. Podolsky, N. Rosen: "Can quantum-mechanical description of physical reality be considered complete?" Phys. Rev. 41, 777 (15 May 1935); → paradox.

A hypothetical structure that can join two distant regions of → space-time through a tunnel-like shortcut, as predicted by → general relativity. The Einstein-Rosen bridge is based on the → Schwarzschild solution of → Einstein's field equations. It is the simplest type of → wormholes.

Albert Einstein & Nathan Rosen (1935, Phys.Rev. 48, 73); → bridge.

The laws of physics are the same in all → inertial reference frames and are invariant under the → Lorentz transformation. The → speed of light is a → physical constant, i.e. it is the same for all observers in uniform motion. Einsteinian relativity is prompted by the → Newton-Maxwell incompatibility. See also: → Galilean relativity, → Newtonian relativity.

→ Einstein; → relativity.

A radioactive metallic → transuranium element belonging to the → actinides; symbol Es. → Atomic number 99, → mass number of most stable → isotope 254 (→ half-life 270 days). Eleven isotopes are known. The element was first identified by A. Ghiorso and collaborators in the debris of first hydrogen bomb explosion in 1952.

Named after Albert Einstein, → einstein + → -ium.