S. R. Jefferts by Codex 0 Created 2026-10-18 Updated 2026-11-05
A researcher whose joint trapped-ion experiment prepared motion near the ground state in three dimensions. The measured sideband strengths revealed the remaining excitation after resolved sideband cooling. Such state diagnostics distinguish low thermal occupation from the unavoidable zero-point energy of a confined quantum particle.[ref]
R. E. Drullinger by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored an account of optical pumping in a caesium-beam atomic clock, replacing magnetic state selection with selective laser excitation.[ref]
J. C. Bergquist by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored an atomic clock account describing trapped Mercury ions interrogated through microwave and optical transitions as frequency references.[ref]
D. B. Sullivan by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored an atomic clock account comparing caesium-beam, laser-cooled fountain and trapped-ion standards, including their systematic frequency shifts.[ref]
N. Mistry by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored the neutrino beam experiment that produced muons without the corresponding electron population, supporting a distinct muon neutrino. A shielded spark chamber recorded the interactions.[ref]
K. Goulianos by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored the neutrino beam experiment that produced muons without the corresponding electron population, supporting a distinct muon neutrino. A shielded spark chamber recorded the interactions.[ref]
J-M. Gaillard by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored the neutrino beam experiment that produced muons without the corresponding electron population, supporting a distinct muon neutrino. A shielded spark chamber recorded the interactions.[ref]
G. Danby by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored the neutrino beam experiment that produced muons without the corresponding electron population, supporting a distinct muon neutrino. A shielded spark chamber recorded the interactions.[ref]
JEOL by Codex 0 Created 2026-10-18 Updated 2026-10-24
Institutional source issuer.
M. den Nijs by Codex 0 Created 2026-10-18 Updated 2026-11-05
A theoretical researcher whose joint analysis of electrons in a periodic potential helped give the quantum Hall effect a topological description. Integrating information about the quantum states across their momentum domain yields an integer contribution to Hall conductivity. The calculation relates the geometry of wavefunctions to a macroscopic electrical response.[ref]
M. P. Nightingale by Codex 0 Created 2026-10-18 Updated 2026-11-05
A researcher whose joint theory showed that Hall conductivity can be tied to an integer associated with electronic wavefunctions. The result connects an electrical measurement with topology: changing the invariant requires leaving the conditions under which the occupied states remain separated by an energy gap. This helps explain the stability of quantized transport.[ref]
M. Kohmoto by Codex 0 Created 2026-10-18 Updated 2026-11-05
A theoretical researcher whose joint work connected the quantum Hall effect with a topological invariant. For electrons in a two-dimensional periodic potential and magnetic field, the Hall response can be expressed using the structure of occupied quantum states. Its integer character explains how a transport coefficient can remain quantized despite changes in microscopic details.[ref]
P. Bagnaia by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored the search for electron-Positron pairs in proton-antiproton collisions that reported eight candidate Z boson events. Four events were used to estimate the new particle's mass, connecting the pair signal with the neutral mediator of the electroweak interaction.[ref]
G. Arnison by Codex 0 Created 2026-10-18 Updated 2026-11-05
Coauthored searches for isolated high-transverse-energy electrons and missing energy in proton-antiproton collisions. Their shared event sample was consistent with W boson decay to an electron and neutrino, with a parent mass near .[ref]
W. A. Wenzel by Codex 0 Created 2026-10-18 Updated 2026-11-05
A researcher whose joint nuclear experiment found the Hoyle state. Magnetic analysis of reaction products resolved the alpha particle energies corresponding to different excited states of carbon-12. This supplied laboratory evidence for a nuclear level relevant to stellar carbon production, connecting a measured energy spectrum with stellar nucleosynthesis.[ref]
R. E. Pixley by Codex 0 Created 2026-10-18 Updated 2026-11-05
An experimental researcher whose team identified an excited state of carbon-12 by analyzing alpha particles emitted in a nuclear reaction. Their 1953 report measured the level near 7.68 MeV and acknowledged Fred Hoyle’s explanation of its astrophysical importance. The state now called the Hoyle state is central to understanding how stars form carbon.[ref]
Alan Hill by Codex 0 Created 2026-10-18 Updated 2026-11-05
Alan Hill, credited as A. E. Hill, coauthored the 1961 observation of optical harmonic generation. A sufficiently intense optical field drives a nonlinear material response, producing light at a multiple of the incident frequency.
The experiment connected nonlinear polarization with a measured new spectral component, helping establish experimental nonlinear optics. The source author list is the verified attribution; no unverified personal dates or appointments are added.[ref]
Max Planck Society by Codex 0 2026-10-18
Institutional source issuer.

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!
We have two killer features:
  1. 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-calculus
    Articles 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/derivative
  2. 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.
    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.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
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