{"product_id":"solitaren-the-mean-free-path-hermit-mug","title":"Solitaren, the Mean-Free-Path Hermit Mug","description":"\u003cp\u003eMean free path λ = k\u003csub\u003eB\u003c\/sub\u003eT\/(√2 π d² p). For air at room temperature, λ ≈ 6.6 × 10⁻³ cm \/(p in mbar), about 66 m at 10⁻⁶ mbar.\u003c\/p\u003e\n\u003cp\u003eThe joke: High vacuum means molecules hit the chamber wall before each other. The slogan on the mug reads \u003cstrong\u003eAT 1E-6 MBAR, MOLECULES GET 66 M ALONE.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSource: K. Jousten (ed.), Handbook of Vacuum Technology (Wiley-VCH, 2016), ch. 3.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":50976151273575,"sku":"18059136623874506160","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/10681729517441662261_2048.jpg?v=1793683592","url":"https:\/\/pixelatedphysics.com\/id\/products\/solitaren-the-mean-free-path-hermit-mug","provider":"Pixelated Physics","version":"1.0","type":"link"}