Never heard that, however; http://www.snopes.com/medical/toxins/laptop.asp
On Tue, Mar 12, 2013 at 11:10 PM, Bill Owsley <[email protected]> wrote: > There's an old story of the first IBM laptop that was going to the show > for promoting it. > The sales lady was using it on her lap... as in laptop. > And the heat generated over the flight time while she tuned the > presentation, yes we carried backup batteries; the heat "ironed" her > synthetic skirt to the panty hose she was wearing. When she tried to stand > to exit the plane... the skirt was stuck to the panty hose and pulled > down... New cooling system effort was started the next day. > As I recall, there was a metal base and no fans for cooling as the metal > base was sufficient... in the lab... > > Since then... all the devices, either EU's or IC's, I've run across have > thermal shutdown conditions. > But betting on "all" devices would be unwise. > I have run across way to many "substitutes" that do not follow expected > assumptions of performance, and cheep too! > > > ------------------------------ > *From:* "Aldous, Scott" <[email protected]> > *To:* IBM Ken <[email protected]>; EMC-PSTC (E-mail) < > [email protected]> > *Sent:* Tuesday, March 12, 2013 4:05 PM > *Subject:* RE: laptop -> house fire > > I don’t believe it. Yes, a notebook computer will get hot with the > vents blocked. Will it generate enough heat to ignite clothing it is > resting on? I highly doubt it. According to this website: > > http://www.tcforensic.com.au/docs/article10.html > > Cotton ignites at 250 degrees C (for some reason it’s in the table for > plastics). Even hay doesn’t ignite until it reaches 172 degrees C, > according to the same site. Notebook computers will not get that hot even > with all vents blocked. Thanks to the magic of Google, I happened to find a > CB report online for a notebook computer. I won’t link to it just in case > it’s not supposed to be public, but it got several blocked vent tests (CB > report issued by UL). It ran for several hours for each test in ambients > between 28 C and 29 C. The hottest temperature recorded inside the > computer, according to the report, was 81 C. Cheesecloth was not charred or > ignited for any of the tests. It was a relatively low power computer (the > AC adapters it can use are rated 65W out), but there is a long way to go > from 81 C to 250 C. > > There had to have been some additional type of fault there, as has been > suggested by John and Ted. > > *Scott Aldous*** > Compliance Manager/Engineering Lab Manager > AE Solar Energy > > +1.970.492.2065 Direct > +1.970.407.5872 Fax > +1.541.312.3832 Main > [email protected] > > 1625 Sharp Point Drive > Fort Collins, CO 80525 > > www.advanced-energy.com/solarenergy > > > *From:* [email protected] [mailto:[email protected]] *On Behalf Of *IBM > Ken > *Sent:* Tuesday, March 12, 2013 1:13 PM > *To:* EMC-PSTC (E-mail) > *Subject:* Re: laptop -> house fire > > "*P.E.I. deputy fire marshal Robert Arsenault demonstrates how vents on > a laptop computer can be blocked when it is sitting on a pile of clothes. > (CBC)*" > Why did he pick that brand of laptop to demonstrate with? XD > > Does anyone have more information on this incident? > > On Tue, Mar 12, 2013 at 2:49 PM, Brian Oconnell <[email protected]> > wrote: > Blocked vent test anyone? Forseeable misuse? I like my computers well done. > > < > www.cbc.ca/news/canada/prince-edward-island/story/2013/03/06/pei-laptop-hou > se-fire-computer-584.html> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. 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To post a message to the list, send your e-mail to < > [email protected]> > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > Website: http://www.ieee-pses.org/ > Instructions: http://listserv.ieee.org/request/user-guide.html > List rules: http://www.ieee-pses.org/listrules.html > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> > > > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
