Talk:Vacuum flask

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[edit] A good Thermos resource to link to

Thermosonline.com seems to cover a wide range of Thermos items and articles and would be a good link resource for readers.65.15.55.107 15:12, 27 March 2006 (UTC)

[edit] Perfect insulation?

I removed the following paragraph

In theory, a vacuum flask could therefore approach arbitrarily close to perfectly insulating its contents, for example keeping a cup of coffee hot for a decade. In practice, however, the inside wall of the container must meet the outside wall, usually at the mouth of the container, at which point slight heat conduction does occur between the inside and outside walls (the vacuum being in between).

since I think it is misleading. While condiction is the primary route of heat loss for most materials, radiation is also important. I can't imagine decade-scale insulation, since heat would necessarily be lost through radiation. Thoughts? --TeaDrinker 19:53, 13 November 2006 (UTC)

Sounds like you were correct to remove it. 62.220.237.74 (talk) 21:19, 22 November 2007 (UTC)

[edit] Vacuum flask was invented by Adolf Ferdinand Weinhold

Already in 1881 Adolf Ferdinand Weinhold published a book in which he described a vacuum flask, similar to the "Dewar flask", for use in the laboratory. Only 10 years later did Dewar invent the flask for a second time. Should be mentioned. --129.13.186.4 (talk) 14:27, 26 January 2008 (UTC)

[edit] Sajid Baten

sajid baten was born is calgury in 1993 —The preceding unsigned comment was added by Sajidbaten (talk • contribs) 14:55, 18 December 2006 (UTC).

non sequitor, I was unable to determine why this article was categorized under Scottish inventions, or appears in that index —Preceding unsigned comment added by 75.108.233.59 (talk) 18:42, 15 September 2007 (UTC)

[edit] Surface Area

Should the low surface-area:volume ratio of the inner flask be mentioned? (i.e. that it minimizes heat transfer) —Preceding unsigned comment added by LaFoiblesse (talk • contribs) 20:49, 14 February 2008 (UTC)