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Equation 6 · Part 1 · From Origins to Frontier: A History of Stochastic Thermodynamics and Complex Systems

Symbol k_B

kBTln⁡2k_BT\ln2
kBk_B

What this part means

kBk_B is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

kBk_B is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

It is worth being explicit about what remained unverified in 1961: Landauer’s paper was a theoretical argument grounded in general reasoning about bistable physical systems, not a measurement. No experiment existed, or could have existed with 1961-era instrumentation, capable of resolving a kBk_BTln⁡\ln2 heat signature from a single erased bit — that quantity, at room temperature, is on the order of 10^{-21} joules, far below the noise floor of any calorimetry available at the time. The principle stood as an unconfirmed but increasingly trusted theoretical result for more than fifty years.

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Sources cited in the article section

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