John Clarke English physicist John Clarke was awarded a share of the 2025 Nobel Prize for Physics. (more) John Clarke English physicist Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/biography/John-Clarke-physicist Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article.

　　External Websites Ask the Chatbot a Question Written by Written by Kara Rogers Kara Rogers is the senior editor of biomedical sciences at Encyclopædia Britannica, where she oversees a range of content from medicine and genetics to microorganisms. She joined Britannica in 2006 and... Kara Rogers Fact-checked by Fact-checked by The Editors of Encyclopaedia Britannica Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... The Editors of Encyclopaedia Britannica Last Updated: Oct. 7, 2025 •Article History Table of Contents Table of Contents Ask the Chatbot John Clarke (born February 10, 1942, Cambridge, England) is an English physicist known for his research on superconductors and Josephson junctions, which allow electron pairs to move between two superconductors by tunneling across a nonsuperconducting barrier. This work led to his advancement of superconducting quantum interference devices (SQUIDs), in which the quantum interference of electrons in a Josephson junction is used to turn a magnetic field into a voltage that can be measured very accurately....

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