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href="/wiki/%E3%83%A1%E3%82%A4%E3%83%B3%E3%83%9A%E3%83%BC%E3%82%B8" title="メインページに移動する [z]" accesskey="z"><span>メインページ</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:%E3%82%B3%E3%83%9F%E3%83%A5%E3%83%8B%E3%83%86%E3%82%A3%E3%83%BB%E3%83%9D%E3%83%BC%E3%82%BF%E3%83%AB" title="このプロジェクトについて、できること、情報を入手する場所"><span>コミュニティ・ポータル</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:%E6%9C%80%E8%BF%91%E3%81%AE%E5%87%BA%E6%9D%A5%E4%BA%8B" title="最近の出来事の背景を知る"><span>最近の出来事</span></a></li><li id="n-newpages" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E6%96%B0%E3%81%97%E3%81%84%E3%83%9A%E3%83%BC%E3%82%B8" title="最近新規に作成されたページの一覧"><span>新しいページ</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E6%9C%80%E8%BF%91%E3%81%AE%E6%9B%B4%E6%96%B0" title="このウィキにおける最近の更新の一覧 [r]" accesskey="r"><span>最近の更新</span></a></li><li id="n-randompage" class="mw-list-item"><a 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id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ja.wikipedia.org&uselang=ja" class=""><span>寄付</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=%E7%89%B9%E5%88%A5:%E3%82%A2%E3%82%AB%E3%82%A6%E3%83%B3%E3%83%88%E4%BD%9C%E6%88%90&returnto=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1" title="アカウントを作成してログインすることをお勧めしますが、必須ではありません" class=""><span>アカウント作成</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=%E7%89%B9%E5%88%A5:%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3&returnto=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1" title="ログインすることを推奨します。ただし、必須ではありません。 [o]" accesskey="o" class=""><span>ログイン</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="その他の操作" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="個人用ツール" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">個人用ツール</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="利用者メニュー" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ja.wikipedia.org&uselang=ja"><span>寄付</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:%E3%82%A2%E3%82%AB%E3%82%A6%E3%83%B3%E3%83%88%E4%BD%9C%E6%88%90&returnto=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1" title="アカウントを作成してログインすることをお勧めしますが、必須ではありません"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>アカウント作成</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3&returnto=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1" title="ログインすることを推奨します。ただし、必須ではありません。 [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>ログイン</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> ログアウトした編集者のページ <a href="/wiki/Wikipedia:%E3%82%A6%E3%82%A3%E3%82%AD%E3%83%9A%E3%83%87%E3%82%A3%E3%82%A2%E3%81%B8%E3%82%88%E3%81%86%E3%81%93%E3%81%9D" aria-label="編集の詳細"><span>もっと詳しく</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E8%87%AA%E5%88%86%E3%81%AE%E6%8A%95%E7%A8%BF%E8%A8%98%E9%8C%B2" title="このIPアドレスからなされた編集の一覧 [y]" accesskey="y"><span>投稿記録</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E3%83%88%E3%83%BC%E3%82%AF%E3%83%9A%E3%83%BC%E3%82%B8" title="このIPアドレスからなされた編集についての議論 [n]" accesskey="n"><span>トーク</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="サイト"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="目次" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">目次</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">サイドバーに移動</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">非表示</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">ページ先頭</div> </a> </li> <li id="toc-真空計としてのガイスラー管" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#真空計としてのガイスラー管"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>真空計としてのガイスラー管</span> </div> </a> <ul id="toc-真空計としてのガイスラー管-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-関連項目" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#関連項目"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>関連項目</span> </div> </a> <ul id="toc-関連項目-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="目次" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="目次の表示・非表示を切り替え" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">目次の表示・非表示を切り替え</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">ガイスラー管</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="特定の記事の別の言語版に移動します。利用可能な言語20件" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-20" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">20の言語版</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A3%D9%86%D8%A8%D9%88%D8%A8_%D8%BA%D8%A7%D9%8A%D8%B3%D9%84%D8%B1" title="アラビア語: أنبوب غايسلر" lang="ar" hreflang="ar" data-title="أنبوب غايسلر" data-language-autonym="العربية" data-language-local-name="アラビア語" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Korzenn_Geissler" title="ブルトン語: Korzenn Geissler" lang="br" hreflang="br" data-title="Korzenn Geissler" data-language-autonym="Brezhoneg" data-language-local-name="ブルトン語" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Tub_de_Geissler" title="カタロニア語: Tub de Geissler" lang="ca" hreflang="ca" data-title="Tub de Geissler" data-language-autonym="Català" data-language-local-name="カタロニア語" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Gei%C3%9Flerr%C3%B6hre" title="ドイツ語: Geißlerröhre" lang="de" hreflang="de" data-title="Geißlerröhre" data-language-autonym="Deutsch" data-language-local-name="ドイツ語" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Geissler_tube" title="英語: Geissler tube" lang="en" hreflang="en" data-title="Geissler tube" data-language-autonym="English" data-language-local-name="英語" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Tubo_de_Geissler" title="スペイン語: Tubo de Geissler" lang="es" hreflang="es" data-title="Tubo de Geissler" data-language-autonym="Español" data-language-local-name="スペイン語" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Geissler_hodi" title="バスク語: Geissler hodi" lang="eu" hreflang="eu" data-title="Geissler hodi" data-language-autonym="Euskara" data-language-local-name="バスク語" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Geisslerin_putki" title="フィンランド語: Geisslerin putki" lang="fi" hreflang="fi" data-title="Geisslerin putki" data-language-autonym="Suomi" data-language-local-name="フィンランド語" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Tube_de_Geissler" title="フランス語: Tube de Geissler" lang="fr" hreflang="fr" data-title="Tube de Geissler" data-language-autonym="Français" data-language-local-name="フランス語" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%A4%D7%95%D7%A4%D7%A8%D7%AA_%D7%92%D7%99%D7%99%D7%A1%D7%9C%D7%A8" title="ヘブライ語: שפופרת גייסלר" lang="he" hreflang="he" data-title="שפופרת גייסלר" data-language-autonym="עברית" data-language-local-name="ヘブライ語" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Geisslerova_cijev" title="クロアチア語: Geisslerova cijev" lang="hr" hreflang="hr" data-title="Geisslerova cijev" data-language-autonym="Hrvatski" data-language-local-name="クロアチア語" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Tubo_di_Geissler" title="イタリア語: Tubo di Geissler" lang="it" hreflang="it" data-title="Tubo di Geissler" data-language-autonym="Italiano" data-language-local-name="イタリア語" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Geisslerbuis" title="オランダ語: Geisslerbuis" lang="nl" hreflang="nl" data-title="Geisslerbuis" data-language-autonym="Nederlands" data-language-local-name="オランダ語" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Rurka_Geisslera" title="ポーランド語: Rurka Geisslera" lang="pl" hreflang="pl" data-title="Rurka Geisslera" data-language-autonym="Polski" data-language-local-name="ポーランド語" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Tubo_de_Geissler" title="ポルトガル語: Tubo de Geissler" lang="pt" hreflang="pt" data-title="Tubo de Geissler" data-language-autonym="Português" data-language-local-name="ポルトガル語" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Tubul_Geissler" title="ルーマニア語: Tubul Geissler" lang="ro" hreflang="ro" data-title="Tubul Geissler" data-language-autonym="Română" data-language-local-name="ルーマニア語" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Geisslerova_cijev" title="セルボ・クロアチア語: Geisslerova cijev" lang="sh" hreflang="sh" data-title="Geisslerova cijev" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="セルボ・クロアチア語" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Geisslerjeva_cev" title="スロベニア語: Geisslerjeva cev" lang="sl" hreflang="sl" data-title="Geisslerjeva cev" data-language-autonym="Slovenščina" data-language-local-name="スロベニア語" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Geisslerr%C3%B6r" title="スウェーデン語: Geisslerrör" lang="sv" hreflang="sv" data-title="Geisslerrör" data-language-autonym="Svenska" data-language-local-name="スウェーデン語" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D0%B5%D0%B9%D1%81%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B0_%D1%82%D1%80%D1%83%D0%B1%D0%BA%D0%B0" title="ウクライナ語: Гейслерова трубка" lang="uk" hreflang="uk" data-title="Гейслерова трубка" data-language-autonym="Українська" data-language-local-name="ウクライナ語" class="interlanguage-link-target"><span>Українська</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q537792#sitelinks-wikipedia" title="言語間リンクを編集" class="wbc-editpage">リンクを編集</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="名前空間"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1" title="本文を閲覧 [c]" accesskey="c"><span>ページ</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%E3%83%8E%E3%83%BC%E3%83%88:%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1&action=edit&redlink=1" rel="discussion" class="new" title="「本文ページについての議論」 (存在しないページ) [t]" accesskey="t"><span>ノート</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="別の言語に切り替える" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">日本語</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="表示"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1"><span>閲覧</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1&action=edit" title="このページのソースコードを編集する [e]" accesskey="e"><span>編集</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1&action=history" title="このページの過去の版 [h]" accesskey="h"><span>履歴表示</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="ページツール"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="ツール" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">ツール</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">ツール</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">サイドバーに移動</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">非表示</button> </div> <div id="p-cactions" 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href="https://www.wikidata.org/wiki/Special:EntityPage/Q537792" title="関連付けられたデータリポジトリ項目へのリンク [g]" accesskey="g"><span>ウィキデータ項目</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="ページツール"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="表示"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">表示</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">サイドバーに移動</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">非表示</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">出典: フリー百科事典『ウィキペディア（Wikipedia）』</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ja" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:Geissler_tubes_(switched_on).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Geissler_tubes_%28switched_on%29.jpg/220px-Geissler_tubes_%28switched_on%29.jpg" decoding="async" width="220" height="233" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Geissler_tubes_%28switched_on%29.jpg/330px-Geissler_tubes_%28switched_on%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Geissler_tubes_%28switched_on%29.jpg/440px-Geissler_tubes_%28switched_on%29.jpg 2x" data-file-width="2250" data-file-height="2378" /></a><figcaption>ガイスラー管</figcaption></figure> <p><b>ガイスラー管</b>（ガイスラーかん、Geissler tube）は1857年に物理学者であり、ガラス細工の技術者であった<a href="/wiki/%E3%83%8F%E3%82%A4%E3%83%B3%E3%83%AA%E3%83%83%E3%83%92%E3%83%BB%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC" title="ハインリッヒ・ガイスラー">ハインリッヒ・ガイスラー</a>が発明した、減圧したガラス管に電極を設けて<a href="/wiki/%E6%94%BE%E9%9B%BB" title="放電">放電</a>実験に用いるもので、<a href="/wiki/%E3%83%8D%E3%82%AA%E3%83%B3%E7%AE%A1" title="ネオン管">ネオン管</a>や<a href="/wiki/%E8%9B%8D%E5%85%89%E7%81%AF" title="蛍光灯">蛍光灯</a>の先駆けになった。 </p><p>ガイスラー管は、低圧の<a href="/wiki/%E8%B2%B4%E3%82%AC%E3%82%B9" class="mw-redirect" title="貴ガス">貴ガス</a>を封入した<a href="/wiki/%E3%82%AC%E3%83%A9%E3%82%B9%E7%AE%A1" class="mw-redirect" title="ガラス管">ガラス管</a>の両端に<a href="/wiki/%E9%9B%BB%E6%A5%B5" title="電極">電極</a>を設け、高電圧を加えることで<a href="/wiki/%E6%94%BE%E9%9B%BB" title="放電">放電</a>させるものである。ガス圧が十分低下すると、放電が発生し、ガイスラー管は明るく輝き始める。輝く色は<a href="/wiki/%E3%82%AC%E3%83%A9%E3%82%B9" title="ガラス">ガラス</a>の含有物、ガスの種類、ガスの圧力で異なる。放電の様子から概略の真空度を推定するのに用いられるほか、教育用の実験に用いられる。当時の科学界にインパクトを与え、改良された放電管は電子の発見やX線の発見につながっていくことになった。 </p> <div class="mw-heading mw-heading2"><h2 id="真空計としてのガイスラー管"><span id=".E7.9C.9F.E7.A9.BA.E8.A8.88.E3.81.A8.E3.81.97.E3.81.A6.E3.81.AE.E3.82.AC.E3.82.A4.E3.82.B9.E3.83.A9.E3.83.BC.E7.AE.A1"></span>真空計としてのガイスラー管</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1&action=edit&section=1" title="節を編集: 真空計としてのガイスラー管"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>ガイスラー管は<a href="/wiki/%E7%9C%9F%E7%A9%BA%E8%A8%88" title="真空計">真空計</a>としても使用される。真空計としてのガイスラー管は圧力を正確に測ることはできないが、一部の真空装置では、高真空に排気するため主ポンプとして<a href="/wiki/%E6%8B%A1%E6%95%A3%E3%83%9D%E3%83%B3%E3%83%97" title="拡散ポンプ">拡散ポンプ</a>を使用して副ポンプに<a href="/wiki/%E3%83%AD%E3%83%BC%E3%82%BF%E3%83%AA%E3%83%BC%E3%83%9D%E3%83%B3%E3%83%97" title="ロータリーポンプ">ロータリーポンプ</a>を組み合わせた場合に油拡散ポンプの作動圧力領域を計るための簡易真空計として使用される。 </p> <div class="mw-heading mw-heading2"><h2 id="関連項目"><span id=".E9.96.A2.E9.80.A3.E9.A0.85.E7.9B.AE"></span>関連項目</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1&action=edit&section=2" title="節を編集: 関連項目"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%E3%82%AF%E3%83%AB%E3%83%83%E3%82%AF%E3%82%B9%E7%AE%A1" title="クルックス管">クルックス管</a></li> <li><a href="/wiki/%E3%82%B0%E3%83%AD%E3%83%BC%E6%94%BE%E9%9B%BB" title="グロー放電">グロー放電</a></li> <li><a href="/wiki/%E7%9C%9F%E7%A9%BA%E8%A8%88" title="真空計">真空計</a></li></ul> <style data-mw-deduplicate="TemplateStyles:r96783592">.mw-parser-output .asbox{position:relative;overflow:hidden}.mw-parser-output .asbox table{background:transparent}.mw-parser-output .asbox p{margin:0}.mw-parser-output .asbox p+p{margin-top:0.25em}.mw-parser-output .asbox{font-size:90%}.mw-parser-output .asbox-note{font-size:90%}.mw-parser-output .asbox .navbar{position:absolute;top:-0.90em;right:1em;display:none}</style><div role="note" class="metadata plainlinks asbox stub"><table role="presentation"><tbody><tr class="noresize"><td><span typeof="mw:File"><a href="/wiki/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:Nuvola_apps_ksim.png" class="mw-file-description"><img alt="スタブアイコン" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Nuvola_apps_ksim.png/30px-Nuvola_apps_ksim.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Nuvola_apps_ksim.png/45px-Nuvola_apps_ksim.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Nuvola_apps_ksim.png/60px-Nuvola_apps_ksim.png 2x" data-file-width="128" data-file-height="128" /></a></span></td><td><p class="asbox-body">この項目は、<a href="/wiki/%E9%9B%BB%E5%AD%90%E5%B7%A5%E5%AD%A6" title="電子工学">電子工学</a>に関連した<b><a href="/wiki/Wikipedia:%E3%82%B9%E3%82%BF%E3%83%96" title="Wikipedia:スタブ">書きかけの項目</a></b>です。<a class="external text" href="https://ja.wikipedia.org/w/index.php?title=%E3%82%AC%E3%82%A4%E3%82%B9%E3%83%A9%E3%83%BC%E7%AE%A1&action=edit">この項目を加筆・訂正</a>などしてくださる<a 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