Equation 14 · Part 3 · How We Know What Is Inside a Planet
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
Cassini flew six flybys of Titan between 2006 and 2011 with a gravity-quality radio link, and Iess and colleagues recovered = 0.589 0.150 , with an alternative solution of 0.637 0.224 [ 14 ] . Both are far too large for a rigid ice shell over rock and are consistent with a global ocean at depth [ 14 ] . The measurement did not see the ocean; it measured how much the whole moon flexes each orbit, and only a decoupled shell flexes that much.
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.