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Equation 4 · Part 2 · From Origins to Frontier: A History of Advanced Semiconductor Fabrication

≈

T≈1T \approx 1
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What this part means

Approximately equal to; the equality is not exact.

Its job in the formula

Approximately equal to; the equality is not exact.

The passage around this formula

with T ≈\approx 1 year in the 1965 paper’s implied rate and T ≈\approx 2 years in Moore’s own 1975 revision [ 1 , 2 ] . A model that halves its own rate parameter after a decade of data is not a law of nature; it is a working forecast that its author corrected in public once, using new evidence, at a named conference. That the popular shorthand later collapsed both versions into a single unchanging “law” says more about the appeal of a clean number than about what either paper actually claimed.

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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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Sources cited in the article section

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