Equation 51 · Part 2 · A Horizon Is a Toll Booth, Not a Loophole
Symbol Δτ
What this part means
Δτ is an input to the expression that computes the quantity on the left.
Its job in the formula
Δτ is an input to the expression that computes the quantity on the left.
Full expression→Symbol Δτ→Article meaning
The passage around this formula
E 0 ′ (the amount of energy it would cost a distant experimenter, at infinity, to deliver that same physical resource down to radius r ), and integrate over the corresponding coordinate interval t = / :
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
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