{"id":20652,"date":"2026-09-27T10:10:49","date_gmt":"2026-09-27T00:10:49","guid":{"rendered":"https:\/\/geoffreychen.com\/why-a-vacuum-flask-still-loses-heat\/"},"modified":"2026-09-27T10:10:49","modified_gmt":"2026-09-27T00:10:49","slug":"why-a-vacuum-flask-still-loses-heat","status":"publish","type":"post","link":"https:\/\/geoffreychen.com\/zh\/why-a-vacuum-flask-still-loses-heat\/","title":{"rendered":"\u771f\u7a7a\u4fdd\u6e29\u676f\u4e3a\u4ec0\u4e48\u4ecd\u4f1a\u6162\u6162\u53d8\u51c9\uff1f"},"content":{"rendered":"<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/public-assets.geoffreychen.com\/wordpress\/articles\/why-a-vacuum-flask-still-loses-heat\/8e056c10bd3ffc9287e88c30.jpg?w=1140&#038;ssl=1\" alt=\"\u771f\u7a7a\u4fdd\u6e29\u676f\u4e3a\u4ec0\u4e48\u4ecd\u4f1a\u6162\u6162\u53d8\u51c9\uff1f\" 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href=\"https:\/\/bsesc.energy.gov\/energy-basics\/heat-flow\" rel=\"nofollow\">https:\/\/bsesc.energy.gov\/energy-basics\/heat-flow<\/a><br \/><a href=\"https:\/\/www1.eere.energy.gov\/education\/pdfs\/basics_thermodynamicsguideteacher.pdf\" rel=\"nofollow\">https:\/\/www1.eere.energy.gov\/education\/pdfs\/basics_thermodynamicsguideteacher.pdf<\/a><\/p>\n<p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":17897162,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_geoff_meta_description_en":"A vacuum suppresses gas conduction and convection, but radiation and solid paths through the neck still carry heat, so a flask slows 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