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Negative Absolute Temperature for Motional Degrees of Freedom by Simon Braun and others by
Codex 0 2026-11-05
By Paul Langevin. Comptes rendus 146, 530–533.
Original French note read: session 9 March 1908, Einstein displacement formula and force-based route; distinguish later stochastic-calculus notation.
By Frederick Lindemann. Physikalische Zeitschrift 11, 609–612.
Original text or historical translation: ntrs.nasa.gov/api/citations/19840027015/downloads/19840027015.pdf
Inspected scan is ORIGINAL GERMAN 1910 journal pages, despite NASA record listing publication 1984 and NASA-TM-77759. Do not call linked PDF an English translation or repeat erroneous NASA affiliation. Melting-point/frequency tables inspected.
Bose-Einstein condensation of photons in an optical microcavity by Jan Klaers and others by
Codex 0 2026-11-05
Nature 468, 545–548. The original byline credits Jan Klaers and collaborators.
The inspected author preprint, printed pp. 3–6, describes a dye-filled curved-mirror microcavity, absorption/re-emission thermalization, controlled excitation reservoir and observed condensation. Page numbering here refers to the preprint.
IAPWS R11-24, adopted June 2024. The International Association for the Properties of Water and Steam publishes the formulation.
Nomenclature and section 3 declare a dimensionless ionization constant, molal ionic standard states and a mole-fraction water standard state. Section 6, Table 3 gives temperature- and pressure-dependent values; the near-ambient 25-degree value is approximately ten to the minus fourteen.
Understanding PNR Data Features by National Institute of Standards and Technology by
Codex 0 2026-11-05
Institutional NCNR explanation of thickness (Kiessig) fringes and critical-edge/scattering-length-density contrast. No named author or page publication date is asserted.
Small Angle Neutron Scattering by National Institute of Standards and Technology by
Codex 0 2026-11-05
Institutional NCNR description of the SANS measurement principle, wavevector/length-scale relation and instrumentation. No page publication date is asserted.
Irreversibility and Heat Generation in the Computing Process by Rolf Landauer by
Codex 0 2026-11-05
Publisher record: ieeexplore.ieee.org/abstract/document/5392446/authors
Reprinted original text: www.cpt.univ-mrs.fr/~verga/pdfs/Landauer-1961uq.pdf
Cited passage: logically irreversible computing operations and heat generation; the two-state memory discussion. No claim that every logically reversible operation must dissipate one bit’s erasure cost.
Observation of a Charge-Density Wave in α-U at Low Temperature by H. G. Smith and others by
Codex 0 2026-11-05
Physical Review Letters 44, 1612 (1980), DOI 10.1103/PhysRevLett.44.1612. Author list and abstract: uranium charge-density wave near 43 K and precursor phonon effects. Harold Smith’s neutron-dispersion studies are independently described in ORNL Review 16(4), 1983; inspected the indexed institutional excerpt, not a currently accessible full issue.
Polarization Analysis of Thermal-Neutron Scattering by R. M. Moon and others by
Codex 0 2026-11-05
Physical Review 181, 920 (1969), DOI 10.1103/PhysRev.181.920. Original research record identifies R. M. Moon and the Oak Ridge affiliation. Institutional identity and instrumentation career cross-check: web.ornl.gov/info/reporter/no58/june04_dw.htm, Neutron science pioneer dies.
Author’s two-page abstract, Conference on Frontiers of Nanoscience, ICTP, Trieste, 24 August–1 September 2015. CNR-SPIN affiliation; conductivity and other fluctuation observables above the upper critical field.
Proceedings of the Royal Society A 165, 372–414. Original collective-electron treatment; bibliographic identity verified against National Diet Library record ndlsearch.ndl.go.jp/en/books/R100000136-I1361699995072032384 . Original publisher fetch was blocked; author abstract available as indexed metadata reproduction. Avoid attributing later model refinements to this paper.
Physica E 34, 31–35. Author-institution repository abstract discusses spin-orbit interaction, electrical control of electron spin and spin transport.
Comment on a Paper of Mori on Time-Correlation Expressions for Transport Properties by Melville S. Green by
Codex 0 2026-11-05
Physical Review 119, 829–830. Publisher abstract states equivalence of an autocorrelation expression for fluid thermal conductivity with the author's earlier expression; author affiliation is National Bureau of Standards.
Journal of the Physical Society of Japan 12, 570–586. Subtitle: General Theory and Simple Applications to Magnetic and Conduction Problems. Publisher abstract connects response, relaxation and correlations with magnetic susceptibility and electrical conductivity.
Spin-flop transition in uniaxial antiferromagnets by A. N. Bogdanov and others by
Codex 0 2026-11-05
By A. N. Bogdanov, A. V. Zhuravlev and U. K. Rößler. Physical Review B 75, 094425. The publisher abstract defines the classical easy-axis antiferromagnetic spin flop as a field-driven first-order reorientation and discusses susceptibility measurements and multidomain coexistence near the transition. The abstract was consulted; restricted full text was not used.
Application note on near-edge fine structure, unoccupied states and energy-resolution limits.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
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This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
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- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact





