Limb Darkening ·
Why a Star's Edge Looks Dim
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seel
.com · stellar disk · optical depth · I(μ) = 1 − u(1 − μ)
μ = cos θ
1.00
I/I(0)
1.00
State
—
Bright center (μ→1)
Dark limb (μ→0)
Line of sight
τ ≈ 1 layer reached
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.com · Limb Darkening