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What are Absorption, Excitation and Emission Spectra? by Edinburgh Instruments by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Publisher: Edinburgh Instruments; Techcomp hosts the inspected reprint.
This source is credited to an organization.
What is the Stokes Shift? by Edinburgh Instruments by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Publisher: Edinburgh Instruments.
This source is credited to an organization.
Online text: www.edinst.com/resource/what-is-the-stokes-shift/
Cited passages: Stokes Shift in Fluorescence Spectroscopy, Figure 4 and its discussion; Stokes Shift in Fluorescence Spectroscopy, Figure 4 and relaxation discussion; Stokes Shift in Fluorescence Spectroscopy, definition, spectral-coordinate caveat, Figures 2 and 4.
Foundational Magnetic Susceptibility by TeachSpin by
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By TeachSpin.
Publisher: TeachSpin, Inc.
This source is credited to an organization.
Online text: www.teachspin.com/fms
Cited passages: TeachSpin, Foundational Magnetic Susceptibility, Instrument: Absolute calibration method and Diamagnetism; TeachSpin, Foundational Magnetic Susceptibility, Instrument: The Gouy Method and “Weighing the magnet” method; Specifications: magnet and sample dimensions.
Concise Encyclopedia of Magnetic & Superconducting Materials by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Collection of sources; individual chapter authors and dates are recorded below.
Publisher: Pergamon Press Inc.
Spectrophotometry of the Double QSO, 0957 + 561 by Beverley J. Wills and D. Wills by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Published in The Astrophysical Journal.
Online text: adsabs.harvard.edu/pdf/1980ApJ...238....1W
Cited passages: Abstract, printed p. 1; section III, pp. 4-5; section IV, pp. 6-7; note added in proof, p. 7, and Figure 3, p. 8: spectral agreement, model limitations and updated galaxy-contamination interpretation; Section II, printed p. 2: instrument, grating, sampling, resolution, two apertures, sky subtraction and interleaving.
Published in Classical and Quantum Gravity.
Online text: arxiv.org/pdf/1010.3829
The arXiv preprint was submitted on 19 October 2010. Journal venue: Classical and Quantum Gravity; journal DOI: 10.1088/0264-9381/27/23/233001.
Lectures on Gravitational Lensing by Ramesh Narayan and Matthias Bartelmann by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Online text: arxiv.org/pdf/astro-ph/9606001
arXiv version 1 was submitted on 3 June 1996; version 2 was revised on 2 October 1997. The date printed by the dynamically regenerated PDF is not used as a publication date.
Cited passages: Section 2.1.3, pp. 8-9, equations (13)-(15), including the warning that lens-source angular diameter distance is not the difference of the observer distances.
Radiative Transfer lecture notes by John E. Greivenkamp by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Publisher: University of Arizona (institutional lecture host).
Online text: wp.optics.arizona.edu/jgreivenkamp/wp-content/uploads/sites/11/2018/12/201-202-22-Radiative-Transfer.pdf
Lecture notes for OPTI-201 and OPTI-202; the slides carry copyright 2018.
Cited passages: Section 22, slides 22-18 and 22-20: lossless radiance conservation and invariant basic radiance L/n²; Section 22, slides 22-3–22-4, solid-angle element and exact cone solid angle; slide 22-7, projected-area hemisphere factor.
By R. John Koshel.
Publisher: University of Arizona, Wyant College of Optical Sciences (institutional host of Photon Snacks / Light Bytes).
Cited passages: Étendue, p. 1, equation (1.1): refractive-index-weighted projected-area integral; Étendue, pp. 1–2, lossless-system and entrance-pupil restrictions; p. 3, Figure 1, preserved generalized phase-space element.
Polarization - Calcite & Iceland Spar by University of Iowa, Department of Physics and Astronomy by
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Publisher: University of Iowa.
This source is credited to an organization.
Cited passages: Demonstration 6H35.15, Equipment and Procedure: crystals, polarizers, printed overhead transparency, two sets of words and selective extinction; final note on natural defects.
Fundamentals of Photonics and Quantum Electronics lecture notes by Franz X. Kärtner by
Codex 0 Created 2026-10-13 Updated 2026-11-05
By Franz X. Kärtner.
Publisher: MIT OpenCourseWare (institutional hosting/publishing platform).
Cited passages: §2.8.1, printed pp. 154–156, equations 2.406–2.413: uniaxial tensor and direction-dependent extraordinary index; §2.8.3, printed pp. 157–158, equations 2.414–2.419: Poynting direction and walk-off; §§2.8.2–2.8.3, printed p. 156, equations 2.410–2.413 and longitudinal electric-field discussion.
Additional verified locator: Chapter 7, printed pp. 313–314 (PDF pages 311–312), Figure 7.19 and equations 7.10–7.12. Linear and ring laser geometries are distinguished; resonance is a round-trip phase condition and adjacent-mode spacing is the inverse round-trip group delay. The ring counts one full cavity circuit rather than adding the linear cavity's extra factor of two. www.ocw.mit.edu/courses/6-974-fundamentals-of-photonics-quantum-electronics-spring-2006/bf3bdeb971819ddc9c68719d28bb2745_classnotes.pdf
§2.6.2, printed p. 116, equation 2.303 and Figure 2.82: equal-radius mirrors separated by their curvature radius have a one-way Gouy phase difference of pi/2; their confocal spectrum has degenerate transverse-order families and interleaved resonances. The PDF page index is 120.
Additional verified locator: §2.6.2, printed pp. 114–116 (PDF indices 118–120), equations 2.297–2.303 and Figures 2.80–2.82: Hermite-Gaussian transverse fields, their Gouy phase and the resonator frequency condition. ocw.mit.edu/courses/6-974-fundamentals-of-photonics-quantum-electronics-spring-2006/bf3bdeb971819ddc9c68719d28bb2745_classnotes.pdf
HCl and DCl IR absorption spectra by Jonathan Gutow by
Codex 0 Created 2026-10-13 Updated 2026-11-05
By Jonathan Gutow.
Publisher: PIPER: Resources for Teaching Physical Chemistry, hosted at Coe College.
Cited passages: Gutow, HCl and DCl IR absorption spectra, dataset description: instrument, path length, pressure and resolved chlorine isotope peaks.
Vibrational-Rotational Spectroscopy of HCl by James M. McCormick by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Publisher: Truman State University ChemLab.
Cited passages: McCormick, Introduction; Experimental, Laboratory Component, Figures 1–2 and background/peak-picking paragraphs; Analysis and Discussion, first three paragraphs.
Collapse and revival of the matter wave field of a Bose-Einstein condensate by Markus Greiner and others by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Published in Nature 419, pages 51–54.
Online text: arxiv.org/pdf/cond-mat/0207196
Cited passages: Greiner and others, manuscript pp. 3–4: preparation and switching; p. 7, Methods: wavelength, beam waists and lattice geometry; Manuscript p. 4 and figure 2 caption on p. 11: flight and image extraction; figure 3 caption on p. 12: readout limitations; figures 4–5 captions on pp. 13–14: final-depth and initial-depth comparisons; Manuscript pp. 2–3, equations (1)–(2): isolated-well Hamiltonian and number-state phase evolution.
Fluctuation theorems: Work is not an observable by Peter Talkner and others by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Publisher: American Physical Society.
Online text: arxiv.org/pdf/cond-mat/0703189
Cited passages: Talkner, Lutz and Hänggi, p. 2, equations (8)–(10): initial energy outcome, conditional transition probability and two-measurement work distribution; Talkner, Lutz and Hänggi, p. 2, paragraph before equation (7): sudden switch gives the identity time-evolution operator.
Experimental Demonstration of Violations of the Second Law of Thermodynamics for Small Systems and Short Time Scales by G. M. Wang and others by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Publisher: American Physical Society.
Published in Physical Review Letters.
Stochastic thermodynamics, fluctuation theorems, and molecular machines by Udo Seifert by
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The Entropy Production Fluctuation Theorem and the Nonequilibrium Work Relation for Free Energy Differences by Gavin E. Crooks by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Entropy production along a stochastic trajectory and an integral fluctuation theorem by Udo Seifert by
Codex 0 Created 2026-10-13 Updated 2026-11-05
By Udo Seifert.
Published in Physical Review Letters.
Online text: arxiv.org/pdf/cond-mat/0503686
Cited passages: Seifert, 2005, Eq. (19) and following paragraph: actual final distribution versus final equilibrium distribution; Seifert, 2005, Eqs. (14)–(18) and (30): conditional and full path weights, endpoint distributions, total entropy; Seifert, 2005, Eqs. (17)–(18): integral relation and its mean inequality.
Solar limb darkening 1986–1990 (λλ303 to 1099 nm) by Heinz Neckel and Dietrich Labs by
Codex 0 Created 2026-10-13 Updated 2026-11-05
Publisher: Kluwer Academic Publishers (printed copyright/publisher line verified).
Published in Solar Physics, 153, 91–114.
Online text: articles.adsabs.harvard.edu/pdf/1994SoPh..153...91N
Cited passages: §2, p. 93, instrumental compilation: slit dimensions, double pass, detectors, sampling and drift-curve layout; p. 113, acknowledgements identifying the telescope; §2, pp. 93–94, precautions (1), (6)–(8); §3.1, p. 94, two-step limb positions and seeing estimate.
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:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- 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





