sure, given the present tilt on the discussions, cardboard is no more hydroscopic than say sodium hydroxide. Nevermind that it is a highly processed version of wood, or woody like plant material, even some re-cycled cardboard, that has as the only thing left to claim is celluose of the cell walls of previous cells of the clear cut old growth virgin forest, home of rare old hoot owl of the northwest, cut down by redneck lumberjacks belonging to the woodcutters union of amerika by burning imported oil products and subsequently causing global warming that will untimately raise the CO2 level and temperature such that the old growth, will re-grow in half the time, only it will be a 1000 miles north of the orginal.
--- "Price, Edward" <[email protected]> wrote: > I don't have any data on cardboard, but it seems to > me that the > cardboard should be just about the same humidity as > the air next to it. > The cardboard box material is relatively thin, and > permeable to the air. > Is there something I don't understand about the > cardboard; will it > somehow extract or concentrate moisture from the > surrounding air? > > Ed Price > [email protected] <mailto:[email protected]> > WB6WSN > NARTE Certified EMC Engineer & Technician > Electromagnetic Compatibility Lab > Cubic Defense Applications > San Diego, CA USA > 858-505-2780 (Voice) > 858-505-1583 (FAX) > Military & Avionics EMC Is Our Specialty > > > ________________________________ > > From: [email protected] [mailto:[email protected]] > On Behalf Of > Daniel Roman > Sent: Thursday, January 24, 2008 6:05 AM > To: [email protected] > Subject: RE: Table for Measuring Emission for > Desktop Equipment > > > If you can't use wood for a table, why would > cardboard be ok? I > would imagine that it would also absorb moisture > from the air and cause > attenuation at high frequencies. > > Regards, > > -- > Dan Roman, N.C.E. > Regulatory Engineer > Dialogic, Inc. > 1515 State Rt. 10 > Parsippany, NJ 07054-4538 > *mailto:[email protected] > <mailto:[email protected]> > *Voice: +1 973-967-6485 Fax: +1 973-967-6262 > Internet: http://www.dialogic.com > > > ________________________________ > > From: [email protected] [mailto:[email protected]] > On Behalf Of > Price, Ed > Sent: Thursday, January 24, 2008 8:53 AM > To: [email protected] > Cc: [email protected] > Subject: RE: Table for Measuring Emission for > Desktop Equipment > > > I am fortunate to have our company's shipping > department located > immediately next to my lab. I often use empty > cardboard boxes to build > non-conducting platforms. It's surprising how much > weight a taped box > can support. > > There are several densities of urethane foam, but > there is also > a white foam made from polyethylene (or maybe > polystyrene). This stuff > is so strong that you can't hardly make a dent in it > with your thumb. > Finally, there is the foam which is used for > foam-in-place packing. This > stuff is poured into a box like a bubble-bath, and > then cures to a hard > foam. Fill an empty cardboard box with this foam, > and you can get a very > tough support structure. > > > > > - > > This message is from the IEEE Product Safety > Engineering Society > emc-pstc discussion list. Website: > http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to > [email protected] > > 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] > > All emc-pstc postings are archived and searchable on > the web at: > > http://www.ieeecommunities.org/emc-pstc > - Bill You can say what you want about the South, but you never hear of anyone retiring and moving North!!! _________________________________ __________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
