PERSON · STARLIGHT

Julius Robert von Mayer

Recorded name: 尤利乌斯·罗伯特·迈尔

Julius Robert Mayer was a German physician and natural-science writer, and an early articulator of energy-conservation ideas.

Original Chinese introduction

尤利乌斯·罗伯特·迈尔是德国医生和自然科学作者，能量守恒思想的早期论述者。

Mayer was a German physician and natural-philosophy writer. In texts of 1842 and 1845 he discussed transformations among heat, mechanical work, and natural processes, making him an early articulator in the history of energy-conservation ideas. His early formulations contained conceptual errors and had a difficult publication history; independent research by Joule, Helmholtz, Clausius, and others jointly shaped later thermodynamic theory.

Original Chinese context

迈尔是德国医生兼自然哲学作者。他在1842年和1845年的文本中论述热、机械功与自然过程转化，是能量守恒思想形成史中的早期论述者。他的早期表述有概念错误，发表经历曲折；Joule、Helmholtz、Clausius等人的独立研究共同塑造了后来的热力学理论。

Introduction sources
Provisional score5.52

Displayed to two decimal places.

Score tierNova T5

Derived from the current score.

Evaluated contributions2

Contribution groups assessed so far; coverage is still being expanded.

ASSESSMENT SCOPE

What this score covers

All included contribution titles and notes are available in English. The complete original text remains available in Chinese; both editions use the same scores and source links.

Uncovered contributions and unresolved harms are not treated as zero. This is not a complete assessment of a lifetime.

1 included contribution has incomplete evidence; the relevant gap appears with that contribution.

Original scope note

This research record currently includes 2 outcomes within a limited scope; M and attribution shares are revisable judgments. Uncovered content and negative effects not yet clarified are not treated as zero; specific gaps appear in the item-by-item explanations.

Original Chinese scope

本轮当前已列2项有限研究账；M与归功份额为可修订判断。未覆盖内容和未核清的负面作用不按零处理，具体缺口见逐项说明。

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CALCULATION

How the score is calculated

Q = 10^(M/2) − 1; Lᵢ = aᵢ × Qᵢ; L = Σ Lᵢ; S = 2 × log₁₀(1 + L).

M is an outcome’s assessed magnitude and a is the person’s allocated share. A standalone score is only a per-item reference; the attributed light from distinct contributions is what can be combined.

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SCORE DETAILS

2 evaluated contributions

M is the assessed magnitude of an outcome; attribution is the person’s share of credit. Attributed light can be added. The standalone score is only a per-item reference and must not be added across rows.

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OutcomeMAttribution shareAttributed lightStandalone scoreShare of totalStatus
01Early theoretical formulations of the equivalence of heat and mechanical work and energy conservation热与机械功等价及能量守恒的早期理论表述OUT-SL2216-1842-1845-HEAT-WORK-EQUIVALENCE-AND-ENERGY-CONSERVATION · 18426.240%503.1701655.4187.6204%Provisional estimate · incomplete evidence
02The public formalization of the second law and entropy as a state quantity第二定律与熵作为状态量的公开形式化CLAUSIUS-SECOND-LAW-ENTROPY-1850-1865 · 1850–18656.54%71.0911763.7212.3796%Included evaluation

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NOTES AND SOURCES

Contribution notes and source links

English translations of the included notes appear below, with their Chinese originals available for comparison.

01Early theoretical formulations of the equivalence of heat and mechanical work and energy conservation热与机械功等价及能量守恒的早期理论表述OUT-SL2216-1842-1845-HEAT-WORK-EQUIVALENCE-AND-ENERGY-CONSERVATION

Record year1842

summaryProposed that heat and mechanical work are mutually convertible and attempted quantitative connections, then extended the indestructible/convertible philosophy to various natural processes, providing an early theoretical final state for the multi-source formation of energy conservation.

Original Chinese · summary

提出热与机械功可互相转化并尝试数量联系，继而把不可毁灭/转化思路扩展到多种自然过程，为能量守恒的多源形成提供早期理论终态。

M rationaleDeutsche Biographie explicitly details the 1842 article, the 1845 expansion, and the multi-route timeline with Joule and Helmholtz, also recording early kinetic energy measurement errors and experimental deficiencies. Based on early unified formulation, cross-process explanation, and foundational nature, M6.2 is assigned; this is the theoretical endpoint of the Mayer route, not a false claim that he alone discovered the complete modern conservation of energy.

Original Chinese · M rationale

Deutsche Biographie明确1842文章、1845扩展及与Joule、Helmholtz的多路线时间线，也记录早期动能度量错误和实验不足。按早期统一表述、跨过程解释与基础性取M6.2；这是Mayer路线的理论终态，不是假称他单独发现完整现代能量守恒。

attribution rationaleMayer .40, prior development of mechanical/thermal theory .25, contemporary direct discussion and editorial chain .06, publishing institution .04, unresolved .25. Joule and Helmholtz are independent routes/successors, not forcibly fitted into the budget.

Original Chinese · attribution rationale

Mayer .40，力学/热理论前史 .25，同期直接讨论与编辑链 .06，出版机构 .04，未解析 .25。Joule与Helmholtz为独立路线/后继，不硬塞预算。

overlap boundaryThe core statements on heat-work equivalence, transformation of natural forces, and conservation in the 1842 'Bemerkungen über die Kräfte der unbelebten Natur' and the 1845 'Die organische Bewegung'; the two texts are treated as one theoretical family; physiological, electromagnetic, chemical extensions or heat-work estimations are not separately assigned M; Joule's experiments and Helmholtz's subsequent systematic formulation are not claimed.

Original Chinese · overlap boundary

1842《Bemerkungen über die Kräfte der unbelebten Natur》与1845《Die organische Bewegung》中的热—功等价、自然力转化与守恒核心表述；两文本视为同一理论族，不另把生理、电磁、化学扩展或热功估算复制M；不领取Joule实验和Helmholtz后继系统表述。

Evidence gapsA paragraph-by-paragraph comparison of calculations, citations, and propositions between the original 1842 and 1845 publications has not yet been conducted; the direct transmission share with early heat-work thought from Carnot, Holtzmann, etc., is not fully resolved; the existing 0.04 shared credit for Mayer at the Clausius point must be maintained as a single account and should not be claimed again for the second law at this point.

Original Chinese · evidence gaps

尚未逐段比对1842与1845原刊的计算、引用和命题变化。；与Carnot、Holtzmann等早期热功思想的直接传递份额未完全解析。；现有Mayer在Clausius点0.04共享归功需联合账维持唯一，不应在本点再次领取第二定律。

Full attribution budget

Every recorded actor remains visible. Share (0–1) retains the ledger’s exact decimal value.

  • 0.4Julius Robert MayerOriginal Chinese · 尤利乌斯·罗伯特·迈尔Person
  • 0.25Precursors in mechanics, heat, matter, heat engines, and force transformationOriginal Chinese · 力学热质热机与力转化前驱Predecessor pool
  • 0.06Mayer's contemporary scientific and editorial interlocutorsOriginal Chinese · Mayer同期科学与编辑交流者Team
  • 0.04Mayer publication chain, 1842–1845Original Chinese · 1842至1845年Mayer出版链Institution
  • 0.25Unresolved Mayer theoretical contributionsOriginal Chinese · 未解析的Mayer理论贡献Unallocated

Source links

02The public formalization of the second law and entropy as a state quantity第二定律与熵作为状态量的公开形式化CLAUSIUS-SECOND-LAW-ENTROPY-1850-1865

Record year1850–1865

M rationaleThe work from 1850 to 1865 incorporated process direction, reversible cycles, and entropy as a state quantity into a single computable framework, forming the foundational theoretical skeleton of thermodynamics, assigned M6.5. Its direct scope remains within thermodynamics; later statistical theories and engineering applications are counted separately.

Original Chinese · M rationale

1850—1865年的工作把过程方向、可逆循环与熵状态量纳入同一可计算框架，形成热力学的基础理论骨架，采用M6.5。其直接范围仍在热力学，后来的统计理论与工程应用另计。

attribution rationaleClausius successively completed the coordination of heat and work, the equivalent form of Q/T transformation, and the synthesis of entropy, credited at 60%. The Carnot cycle framework he actually used, the knowledge transmission from Clapeyron and Thomson, and the heat-work research of Mayer, Joule, and Helmholtz each retain their shares.

Original Chinese · attribution rationale

克劳修斯连续完成热功协调、Q/T变换等价形式及熵的综合，归功60%。其实际使用的卡诺循环框架、克拉佩龙与汤姆孙的知识传递，以及迈尔、焦耳和亥姆霍兹的热功研究分别保留份额。

overlap boundaryThe work of 1850, 1854, and 1865 is combined into one theoretical family, not split into three separate contributions to the second law.

Original Chinese · overlap boundary

1850、1854与1865年工作合为一个理论家族，不拆成三次第二定律贡献。

Full attribution budget

Every recorded actor remains visible. Share (0–1) retains the ledger’s exact decimal value.

  • 0.6Rudolf ClausiusOriginal Chinese · 鲁道夫·克劳修斯Person
  • 0.12Sadi CarnotOriginal Chinese · 萨迪·卡诺Person
  • 0.08Benoît Paul Émile ClapeyronPerson
  • 0.07William Thomson (Lord Kelvin)Original Chinese · 威廉·汤姆森（开尔文勋爵）Person
  • 0.04Julius Robert MayerOriginal Chinese · 尤利乌斯·罗伯特·迈尔Person
  • 0.06James JouleOriginal Chinese · 詹姆斯·焦耳Person
  • 0.03Hermann von HelmholtzOriginal Chinese · 赫尔曼·冯·亥姆霍兹Person

Source links

BOUNDARIES NOT COUNTED

Not included in this score

These subjects are recorded as exclusions and are not silently treated as zero or as part of the included outcomes.

1845 extensions to physiology, chemistry, and solar processes

1845生理、化学与太阳过程延伸

Reason As scope extensions of energy-transformation thought, these are included in the core outcome; unverified or erroneous inferences among them are not separately counted as positive outcomes.

Original Chinese reason

作为能量转化思想的范围扩展由核心点消费；其中未经验证或错误推断不另计正成果。

Later celestial dynamics and popular exposition

后续天体动力与通俗阐释

Reason The remaining circulation highly overlaps the 1842–45 core theory, and the record notes that some conclusions conflict with data; no M is set without an independent enduring end state.

Original Chinese reason

传播残余与1842–45核心理论高度重合，且条目记录部分结论与数据冲突；无独立可存续终态前不设M。

How to read this score

Scores can change when evidence is reviewed. The method page explains how magnitude, attribution, and included results relate to the displayed score.

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