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Langley (unit)

unit of energy distribution over an area

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 18, 2022
Entity authorityQ1805331 ↗
Source-derived summary

The langley (Ly) is a unit of heat transmission, especially used to express the rate of solar radiation (or insolation) received by the earth. The unit was proposed by Franz Linke in 1942 and named after Samuel Langley (1834–1906) in 1947.

Editorial summary

The public source identifies “Langley (unit)” as unit of energy distribution over an area. This brief keeps that definition visible, then builds a research path around Langley, unit and energy.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1942, 1834, 1906, 1947—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with Langley, unit and energy providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Langley (unit)”, the useful work is to connect “unit of energy distribution over an area” to the records capable of establishing context and consequence.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 18, 2022. The linked authority identifier is Q1805331. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1942, 1834, 1906 and 1947.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from “Langley (unit)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.