Symbol in context
This entry links every published equation using this exact notation. Its meaning may change between equations.
Article-grounded definition
the physical size of the sound horizon at recombination — how far a pressure wave in the primordial plasma could travel before the plasma became neutral and transparent —.
Read equation 1 in From Origins to Frontier: A History of Precision Cosmology →
This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.
Equation guide → · This term → · Article →the physical size of the sound horizon at recombination — how far a pressure wave in the primordial plasma could travel before the plasma became neutral and transparent —.
Equation guide → · This term → · Article →the physical size of the sound horizon at recombination — how far a pressure wave in the primordial plasma could travel before the plasma became neutral and transparent —.
Equation guide → · This term → · Article →This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.
Equation guide → · This term → · Article →