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<!DOCTYPE html> <html> <head> <link rel="stylesheet" type="text/css" href="/s/7d94e0.css" title="Default"/> <title>xkcd: Neutrino Modem</title> <meta http-equiv="X-UA-Compatible" content="IE=edge"/> <link rel="shortcut icon" href="/s/919f27.ico" type="image/x-icon"/> <link rel="icon" href="/s/919f27.ico" type="image/x-icon"/> <link rel="alternate" type="application/atom+xml" title="Atom 1.0" href="/atom.xml"/> <link rel="alternate" type="application/rss+xml" title="RSS 2.0" href="/rss.xml"/>  <meta property="og:site_name" content="xkcd"> <meta property="og:title" content="Neutrino Modem"> <meta property="og:url" content="https://xkcd.com/3017/"> <meta property="og:image" content="https://imgs.xkcd.com/comics/neutrino_modem_2x.png"> <meta name="twitter:card" content="summary_large_image"> </head> <body> <div id="topContainer"> <div id="topLeft"> <ul> <li><a href="/archive">Archive</a></li> <li><a href="https://what-if.xkcd.com">What If?</a></li> <li><a rel="author" href="/about">About</a></li> <li><a href="/atom.xml">Feed</a>•<a href="/newsletter/">Email</a></li> <li><a href="https://twitter.com/xkcd/">TW</a>•<a href="https://www.facebook.com/TheXKCD/">FB</a>•<a href="https://www.instagram.com/xkcd/">IG</a></li> <li><a href="/books/">-Books-</a></li> <li><a href="/what-if-2/">What If? 2</a></li> <li><a href="/what-if/">WI?</a>•<a href="/thing-explainer/">TE</a>•<a href="/how-to/">HT</a></li> </ul> </div> <div id="topRight"> <div id="masthead"> <span><a href="/"><img src="/s/0b7742.png" alt="xkcd.com logo" height="83" width="185"/></a></span> <span id="slogan">A webcomic of romance,<br/> sarcasm, math, and language.</span> </div> <div id="news"> <div id="xkcdNews"> <a href="https://xkcd.com/what-if/">Special 10th anniversary edition of WHAT IF?</a>鈥攔evised and annotated with brand-new illustrations and answers to important questions you never thought to ask鈥攃oming from November 2024. 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