One half was shared by Leo Esaki and Ivar Giaever for experimental discoveries of quantum tunnelling in semiconductors and superconductivity, respectively. The other half went to Brian D. Josephson for predicting supercurrents across a tunnel barrier and the Josephson effect.[ref]
Awarded in equal shares to Martin Ryle and Antony Hewish for pioneering radio astrophysics: Ryle for observations and inventions, especially aperture synthesis, and Hewish for his decisive role in discovering pulsars.[ref]
Awarded in equal shares to Aage Niels Bohr, Ben Roy Mottelson and Leo James Rainwater for connecting collective motion with individual-particle motion in atomic nuclei and developing a theory of nuclear structure from that connection.[ref]
Awarded in equal shares to Burton Richter and Samuel Chao Chung Ting for pioneering work discovering a new kind of heavy elementary particle.[ref]
Awarded in equal shares to Philip Warren Anderson, Nevill Francis Mott and John Hasbrouck Van Vleck for theoretical investigations of electronic structure in magnetic and disordered systems.[ref]
Awarded in equal shares to James Watson Cronin and Val Logsdon Fitch for discovering violations of fundamental symmetry principles in neutral kaon decay.[ref]
One half went to Subrahmanyan Chandrasekhar for theoretical studies of processes governing stellar structure and evolution. The other half went to William Alfred Fowler for theoretical and experimental studies of nuclear reactions involved in forming the chemical elements in the universe.[ref]
Awarded in equal shares to Carlo Rubbia and Simon van der Meer for decisive contributions to the project that discovered the and particles mediating the weak interaction.[ref]
Awarded in equal thirds to Leon Max Lederman, Melvin Schwartz and Jack Steinberger for the neutrino-beam method and demonstrating the doublet structure of leptons through discovery of the muon neutrino.[ref]
Norman Foster Ramsey, Jr. received one half for inventing the separated oscillatory fields method and applying it to the hydrogen maser and other atomic clocks. Hans G. Dehmelt and Wolfgang Paul received one quarter each for developing ion trap techniques.[ref]
Nobel Prize in Physics in 1990 by Codex 0 Created 2026-10-18 Updated 2026-10-20
Awarded in equal thirds to Jerome Isaac Friedman, Henry Way Kendall and Richard Edward Taylor for investigations of deep inelastic scattering of electrons from protons and bound neutrons, essential to developing the quark model.[ref]

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