← All parts of this equation

Equation 132 · Part 1 · The Entry a Relabeling Cannot Write

Symbol omega_r

ωr=0\omega_r = 0
ωr\omega_r

What this part means

omegara_r is part of the quantity the equation computes from the expression on the right.

Its job in the formula

omegara_r is part of the quantity the equation computes from the expression on the right.

The passage around this formula

…frame rotating with an applied field — the identical construction I. I. Rabi used to analyze spin behavior in a gyrating magnetic field in 1937 [ 14 ] . Two checks confirm the recovery is exact rather than incidental: at ωr\omega_r = 0 , the non-rotating case, Δframe\Delta_{\rm frame} ≡\equiv 0 and HcH_c = HfH_f , the already-verified baseline; at ωr\omega_r = ω0\omega_0 , exact corotation, HcH_c = 0 and the spin’s energy in this frame vanishes identically, which is the ordinary resonance condition, not a puzzle, because \Delta_{\rm…

Read this part in the article →

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 →

See this notation across published equations →

Sources cited in the surrounding passage

These citations provide research context; check each source for the exact claim it supports.