This is from my son, the physics major and UW Henley rower, and is in response to Mike Hardester's comments on CFLs: Begin forwarded message:
> From what I read of the post, it most seems like hearsay or wives > tales. CFL bulbs operate at 2x 60Hz (as do the "standard" > fluorescent bulbs) i.e. 120 Hz. This is not by choice, but rather a > result of grid power at 60 Hz. In the UK and other countries using > 50 Hz. power, perhaps the statement about operating frequency may > be marginally true (again, operating at 2x grid frequency -> 2x 50 > Hz = 100 Hz). These effects are generally similar to waving one's > finger in front of a TV and noting the lines: a stroboscopic > effect. This has long been known in psychiatric and theatrical > circles to cause seizures, however, the frequency is rather specific. > > Older CRT (non- LCD) monitors operating below 70 Hz refresh rate > were known to cause headaches due to the perceived "flashing" by > some. This phenomena, however, was not across the board by any means. > > Faulty or miswired (meaning out-of-phase) ballasts may have lead to > further issues with fluorescent bulbs etc. > > The biggest issue that CFL bulbs pose on the urban front is a > terrible power factor. This affects the energy paid for at the > meter (low power factor benefits the utility generally) as well as > that generated. Not being technically inclined, refined, or of mind, I am simply acting as a conduit. Pete Taylor Tacoma, WA 12225w 4719n ICF2010 + Kiwa air core loop DX398; Palomar loop If anyone conduit, you conduit... _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
