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1<section class="mx-auto max-w-3xl px-4 sm:px-6 xl:max-w-5xl xl:px-0"><header class="flex items-center w-full bg-white dark:bg-gray-950 justify-between py-10"><a class="break-words" aria-label="PÅ TAL OM UNIVERSUM" href="/"><div class="flex items-center"><div class="mr-3 flex flex-shrink-0 items-center"><img alt="På tal om universum" width="50" height="50" decoding="async" data-nimg="1" style="color:transparent" src="/static/images/ptou_round_icon_v1.png"/></div><div class="flex min-h-[50px] items-center"><div class="text-2xl __className_8f2346">PÅ TAL OM UNIVERSUM</div></div></div></a><div class="flex items-center space-x-4 leading-5 sm:-mr-6 sm:space-x-6"><div class="no-scrollbar hidden max-w-40 items-center gap-x-4 overflow-x-auto md:flex md:max-w-72 lg:max-w-96"><a class="hover:text-primary-500 dark:hover:text-primary-400 m-1 font-medium text-gray-900 dark:text-gray-100" href="/blogg">Blogg</a><a class="hover:text-primary-500 dark:hover:text-primary-400 m-1 font-medium text-gray-900 dark:text-gray-100" href="/amnen">Ämnen</a><a class="hover:text-primary-500 dark:hover:text-primary-400 m-1 font-medium text-gray-900 dark:text-gray-100" href="/projekt">Projekt</a><a class="hover:text-primary-500 dark:hover:text-primary-400 m-1 font-medium text-gray-900 dark:text-gray-100" href="/om-oss">Om oss</a></div><button aria-label="Search"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="hover:text-primary-500 dark:hover:text-primary-400 h-6 w-6 text-gray-900 dark:text-gray-100"><path stroke-linecap="round" stroke-linejoin="round" d="M21 21l-5.197-5.197m0 0A7.5 7.5 0 105.196 5.196a7.5 7.5 0 0010.607 10.607z"></path></svg></button><div class="flex items-center"><div class="relative inline-block text-left" data-headlessui-state=""><div class="hover:text-primary-500 dark:hover:text-primary-400 flex items-center justify-center"><button aria-label="Theme switcher" id="headlessui-menu-button-«Rtpkqjb»" type="button" aria-haspopup="menu" aria-expanded="false" data-headlessui-state=""><svg class="h-6 w-6"></svg></button></div></div></div><button aria-label="Toggle Menu" class="sm:mr-4 md:hidden"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" class="hover:text-primary-500 dark:hover:text-primary-400 h-8 w-8 text-gray-900 dark:text-gray-100"><path fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 15a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1z" clip-rule="evenodd"></path></svg></button><span hidden="" style="position:fixed;top:1px;left:1px;width:1px;height:0;padding:0;margin:-1px;overflow:hidden;clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;display:none"></span></div></header><main class="mb-auto"><div><div class="pt-6 pb-6"><h1 class="text-3xl leading-9 font-extrabold tracking-tight text-gray-900 sm:hidden sm:text-4xl sm:leading-10 md:text-6xl md:leading-14 dark:text-gray-100">Alla artiklar</h1></div><div class="flex sm:space-x-24"><div class="hidden h-full max-h-screen max-w-[280px] min-w-[280px] flex-wrap overflow-auto rounded-sm bg-gray-50 pt-5 shadow-md sm:flex dar
1k:bg-gray-900/70 dark:shadow-gray-800/40"><div class="px-6 py-4"><h3 class="text-primary-500 font-bold uppercase">Alla artiklar</h3><ul><li class="my-3"><a class="hover:text-primary-500 dark:hover:text-primary-500 px-3 py-2 text-sm font-medium text-gray-500 uppercase dark:text-gray-300" aria-label="Via artiklar med ämnet atomer" href="/amnen/atomer">atomer (1)</a></li><li class="my-3"><a class="hover:text-primary-500 dark:hover:text-primary-500 px-3 py-2 text-sm font-medium text-gray-500 uppercase dark:text-gray-300" aria-label="Via artiklar med ämnet data" href="/amnen/data">data (1)</a></li><li class="my-3"><a class="hover:text-primary-500 dark:hover:text-primary-500 px-3 py-2 text-sm font-medium text-gray-500 uppercase dark:text-gray-300" aria-label="Via artiklar med ämnet el" href="/amnen/el">el (1)</a></li><li class="my-3"><a class="hover:text-primary-500 dark:hover:text-primary-500 px-3 py-2 text-sm font-medium text-gray-500 uppercase dark:text-gray-300" aria-label="Via artiklar med ämnet fysik" href="/amnen/fysik">fysik (1)</a></li><li class="my-3"><a class="hover:text-primary-500 dark:hover:text-primary-500 px-3 py-2 text-sm font-medium text-gray-500 uppercase dark:text-gray-300" aria-label="Via artiklar med ämnet kuriosa" href="/amnen/kuriosa">kuriosa (1)</a></li><li class="my-3"><a class="hover:text-primary-500 dark:hover:text-primary-500 px-3 py-2 text-sm font-medium text-gray-500 uppercase dark:text-gray-300" aria-label="Via artiklar med ämnet matematik" href="/amnen/matematik">matematik (1)</a></li><li class="my-3"><a class="hover:text-primary-500 dark:hover:text-primary-500 px-3 py-2 text-sm font-medium text-gray-500 uppercase dark:text-gray-300" aria-label="Via artiklar med ämnet tal" href="/amnen/tal">tal (1)</a></li></ul></div></div><div><ul><li class="py-5"><article class="flex flex-col space-y-2 xl:space-y-0"><dl><dt class="sr-only">Publicerad</dt><dd class="text-base leading-6 font-medium text-gray-500 dark:text-gray-400"><time dateTime="2026-01-23T00:00:00.000Z">23 januari 2026</time></dd></dl><div class="space-y-3"><div><h2 class="text-2xl leading-8 font-bold tracking-tight"><a class="text-gray-900 dark:text-gray-100" href="/blogg/gastinlagg/fota-atomer">Titta! Atomer!</a></h2><div class="flex flex-wrap"><a class="text-primary-500 hover:text-primary-600 dark:hover:text-primary-400 mr-3 text-sm font-medium uppercase" href="/amnen/atomer">atomer</a><a class="text-primary-500 hover:text-primary-600 dark:hover:text-primary-400 mr-3 text-sm font-medium uppercase" href="/amnen/fysik">fysik</a></div></div><div class="prose max-w-none text-gray-500 dark:text-gray-400">Hur kan man fotografera atomer, och vad kan man lära sig av deras minsta defekter? På atomnivå möts kvantmekanik, extrema experiment och oväntat vackra mönster som avslöjar hur material egentligen fungerar.</div></div></article></li><li class="py-5"><article class="flex flex-col space-y-2 xl:space-y-0"><dl><dt class="sr-only">Publicerad</dt><dd class="text-base leading-6 font-medium text-gray-500 dark:text-gray-400"><time dateTime="2025-12-17T00:00:00.000Z">17 december 2025</time></dd></dl><div class="space-y-3"><div><h2 class="text-2xl leading-8 font-bold tracking-tight"><a class="text-gray-900 dark:text-gray-100" href="/blogg/gastinlagg/tal-for-min-son">Tal för min son</a></h2><div class="flex flex-wrap"><a class="text-primary-500 hover:text-primary-600 dark:hover:text-primary-400 mr-3 text-sm font-medium uppercase" href="/amnen/tal">tal</a><a class="text-primary-500 hover:text-primary-600 dark:hover:text-primary-400 mr-3 text-sm font-medium uppercase" href="/amnen/matematik">matematik</a></div></div><div class="prose max-w-none text-gray-500 dark:text-gray-400">Vad är talförmåga? Är det förmågan att tala? Eller någonting helt annat? I det här blogginlägget går vi genom ett tal som går igenom alla möjliga tal som Topi en dag vill förklara för sin son.</div></div></article></li><li class="py-5"><article class="flex flex-col space-y-2 xl:space-y-0"><dl><dt class="sr-only">Publicerad</dt><dd class="text-base leading-6 font-medium text-gray-500 dark:text-gray-400"><time dateTime="2025-10-02T00:00:00.000Z">2 oktober 2025</time></dd></dl><div class="space-y-3"><div><h2 class="text-2xl leading-8 font-bold tracking-tight">
1<a class="text-gray-900 dark:text-gray-100" href="/blogg/kuriosa/diskmaskinens-eko">Diskmaskinen snackar goja - hur kortare program gör dig ruinerad</a></h2><div class="flex flex-wrap"><a class="text-primary-500 hover:text-primary-600 dark:hover:text-primary-400 mr-3 text-sm font-medium uppercase" href="/amnen/data">data</a><a class="text-primary-500 hover:text-primary-600 dark:hover:text-primary-400 mr-3 text-sm font-medium uppercase" href="/amnen/kuriosa">kuriosa</a><a class="text-primary-500 hover:text-primary-600 dark:hover:text-primary-400 mr-3 text-sm font-medium uppercase" href="/amnen/el">el</a></div></div><div class="prose max-w-none text-gray-500 dark:text-gray-400">LÃ¥ngt program, lägre elräkning? En liten elmätare, lite fysik och en diskmaskin som gärna brÃ¥kar med vÃ¥ra förutfattade meningar om energi - vad kan gÃ¥ fel?</div></div></article></li></ul></div></div></div></main><footer><div class="mt-16 flex flex-col items-center"><div class="mb-3 flex space-x-4"><a class="text-sm text-gray-500 transition hover:text-gray-600" target="_blank" rel="noopener noreferrer" href="mailto:[email protected]"><span class="sr-only">mail</span><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" class="hover:text-primary-500 dark:hover:text-primary-400 fill-current text-gray-700 dark:text-gray-200 h-6 w-6"><title>Mail</title><path d="M2.003 5.884L10 9.882l7.997-3.998A2 2 0 0016 4H4a2 2 0 00-1.997 1.884z"></path><path d="M18 8.118l-8 4-8-4V14a2 2 0 002 2h12a2 2 0 002-2V8.118z"></path></svg></a><a class="text-sm text-gray-500 transition hover:text-gray-600" target="_blank" rel="noopener noreferrer" href="https://www.facebook.com/profile.php?id=61582389714648"><span class="sr-only">facebook</span><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="hover:text-primary-500 dark:hover:text-primary-400 fill-current text-gray-700 dark:text-gray-200 h-6 w-6"><title>Facebook</title><path d="M24 12.073c0-6.627-5.373-12-12-12s-12 5.373-12 12c0 5.99 4.388 10.954 10.125 11.854v-8.385H7.078v-3.47h3.047V9.43c0-3.007 1.792-4.669 4.533-4.669 1.312 0 2.686.235 2.686.235v2.953H15.83c-1.491 0-1.956.925-1.956 1.874v2.25h3.328l-.532 3.47h-2.796v8.385C19.612 23.027 24 18.062 24 12.073z"></path></svg></a><a class="text-sm text-gray-500 transition hover:text-gray-600" target="_blank" rel="noopener noreferrer" href="https://rss.com/podcasts/ptou"><span class="sr-only">podcast</span><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="hover:text-primary-500 dark:hover:text-primary-400 fill-current text-gray-700 dark:text-gray-200 h-6 w-6"><title>Podcast</title><path d="M8.25 4.5a3.75 3.75 0 1 1 7.5 0v8.25a3.75 3.75 0 1 1-7.5 0V4.5Z"></path><path d="M6 10.5a.75.75 0 0 1 .75.75v1.5a5.25 5.25 0 1 0 10.5 0v-1.5a.75.75 0 0 1 1.5 0v1.5a6.751 6.751 0 0 1-6 6.709v2.291h3a.75.75 0 0 1 0 1.5h-7.5a.75.75 0 0 1 0-1.5h3v-2.291a6.751 6.751 0 0 1-6-6.709v-1.5A.75.75 0 0 1 6 10.5Z"></path></svg></a><a class="text-sm text-gray-500 transition hover:text-gray-600" target="_blank" rel="noopener noreferrer" href="https://www.instagram.com/patalomuniversum"><span class="sr-only">instagram</span><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="hover:text-primary-500 dark:hover:text-primary-400 fill-current text-gray-700 dark:text-gray-200 h-6 w-6"><title>Instagram</title><path d="M12 0C8.74 0 8.333.015 7.053.072 5.775.132 4.905.333 4.14.63c-.789.306-1.459.717-2.126 1.384S.935 3.35.63 4.14C.333 4.905.131 5.775.072 7.053.012 8.333 0 8.74 0 12s.015 3.667.072 4.947c.06 1.277.261 2.148.558 2.913.306.788.717 1.459 1.384 2.126.667.666 1.336 1.079 2.126 1.384.766.296 1.636.499 2.913.558C8.333 23.988 8.74 24 12 24s3.667-.015 4.947-.072c1.277-.06 2.148-.262 2.913-.558.788-.306 1.459-.718 2.126-1.384.666-.667 1.079-1.335 1.384-2.126.296-.765.499-1.636.558-2.913.06-1.28.072-1.687.072-4.947s-.015-3.667-.072-4.947c-.06-1.277-.262-2.149-.558-2.913-.306-.789-.718-1.459-1.384-2.126C21.319 1.347 20.651.935 19.86.63c-.765-.297-1.636-.499-2.913-.558C15.667.012 15.26 0 12 0zm0 2.16c3.203 0 3.585.016 4.85.071 1.17.055 1.805.249 2.227.415.562.217.96.477 1.382.896.419.42.679.819.896 1.381.164.422.36 1.057.413 2.227.057 1.266.07 1.646.07 4.85s-.015 3.585-.074 4.85c-.061 1.17-.256 1.805-.421 2.227-.224.562-.479.96-.899 1.382-.419.419-.824.679-1.38.896-.42.164-1.065.36-2.235.413-1.274.057-1.649.07-4.859.07-3.211 0-3.586-.015-4.859-.074-1.171-.061-1.816-.256-2.236-.421-.569-.224-.96-.479-1.379-.899-.421-.419-.69-.824-.9-1.38-.165-.42-.359-1.065-.42-2.235-.045-1.26-.061-1.649-.061-4.844 0-3.196.016-3.586.061-4.861.061-1.17.255-1.814.42-2.234.21-.57.479-.96.9-1.381.419-.419.81-.689 1.379-.898.42-.166 1.051-.361 2.221-.421 1.275-.045 1.65-.06 4.859-.06l.045.03zm0 3.678c-3.405 0-6.162 2.76-6.162 6.162 0 3.405 2.76 6.162 6.162 6.162 3.405 0 6.162-2.76 6.162-6.162 0-3.405-2.76-6.162-6.162-6.162zM12 16c-2.21 0-4-1.79-4-4s1.79-4 4-4 4 1.79 4 4-1.79 4-4 4zm7.846-10.405c0 .795-.646 1.44-1.44 1.44-.795 0-1.44-.646-1.44-1.44 0-.794.646-1.439 1.44-1.439.793-.001 1.44.645 1.44 1.439z"></path></svg></a></div><div class="mb-2 flex space-x-2 text-sm text-gray-500 dark:text-gray-400"><div>Magnus och Sigge</div><div> • </div><div>© 2026</div><div> • </div><a class="break-words" href="/">PÃ¥ tal om universum</a></div><div class="mb-8 text-sm text-gray-500 dark:text-gray-400"></div></div></footer></section>
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