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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: nntp.eternal-september.org!news.eternal-september.org!eternal-september.org!feeder3.eternal-september.org!fu-berlin.de!uni-berlin.de!not-for-mail From: ram@zedat.fu-berlin.de (Stefan Ram) Newsgroups: sci.physics Subject: Re: What is a photon Date: 29 Jun 2025 20:05:15 GMT Organization: Stefan Ram Lines: 15 Expires: 1 Jun 2026 11:59:58 GMT Message-ID: References: <9af3e95b721801ec23446e0d70f081b3@www.novabbs.org> <660a8f908d7b07b03f1175060ced6ef0@www.novabbs.org> <103s55m$1mj4p$1@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: news.uni-berlin.de NedmunN7ZkY3s322m3J6rwjEztvLkjzp2kFr7vr4YGaQK4 Cancel-Lock: sha1:TKk4HIub7JyDSgfb8amLnzcZ3hU= sha256:wnd4fiEKAOBfsFD5yEuwE8a0EF6zxv7fLr5GoII0wzk= X-Copyright: (C) Copyright 2025 Stefan Ram. All rights reserved. Distribution through any means other than regular usenet channels is forbidden. It is forbidden to publish this article in the Web, to change URIs of this article into links, and to transfer the body without this notice, but quotations of parts in other Usenet posts are allowed. X-No-Archive: Yes Archive: no X-No-Archive-Readme: "X-No-Archive" is set, because this prevents some services to mirror the article in the web. But the article may be kept on a Usenet archive server with only NNTP access. X-No-Html: yes Content-Language: en-US William Hyde wrote or quoted: >But, of course, to turn a proton into a neutron an up quark must be >changed to a down quark, and that involves the strong nuclear force, >which the electron does not have at all. This quark flavor change is actually a beta decay, a consequence of the /weak force/. >Hence the fact that this can only occur in a nucleus, where the strong >force is present. The mass of a proton is slightly less than that of a neutron, so a free proton cannot change into a neutron when no energy is supplied.