very well wordcrafted

Post #425,407 by boxley 9/8/18 8:58:25 PM 9/8/18 8:58:25 PM Reply	very well wordcrafted it carefully doesnt say it will automatically come on if the switch is in the off position and the power goes out. "Science is the belief in the ignorance of the experts" – Richard Feynman
Post #425,408 by drook 9/8/18 9:21:24 PM 9/8/18 9:21:24 PM Reply	They seem to be saying that after the power is out, the switch still works That can't be true. I don't trust the reviews even a little bit. The sites that review it all reprinted the same press release under the "reviewer"s byline, and the explanations in Amazon reviews sound bogus. "Q: I unplugged the lamp and moved it to another room and it didn't work. A: If you unplug the lamp it's no longer grounded." Bitch, when's the last time you saw a grounded plug on a lamp? -- Drew
Post #425,409 by boxley 9/8/18 9:36:28 PM 9/8/18 9:36:28 PM Reply	absolute crap, if its got a built in battery it doesnt need to be plugged in if you put it in a lamp it can probably sense resistance to the switch. If the power is out and it is plugged in and the switch is on there will be a measurable difference in the resistance from the bulb and the socket "Science is the belief in the ignorance of the experts" – Richard Feynman
Post #425,410 by drook 9/8/18 9:42:34 PM 9/8/18 9:42:34 PM Reply	So it's plausible it can tell the difference between turned off and power out? -- Drew
Post #425,411 by boxley 9/8/18 9:53:28 PM 9/8/18 9:53:28 PM Reply	Re: So it's plausible it can tell the difference between turned off and power out? since I answered off the top of my head I thought I should check a few things https://www.quora.com/How-do-I-find-the-electrical-resistance-between-the-two-leads-of-my-110-volt-wall-outlet-at-home If you have a doubt about the wiring being faulty or something and hence you want to measure the resistance then. first COMPLETELY DISCONNECT ALL SOURCE SUPPLY AND FULLY ISOLATE THE ENTIRE HOUSE WIRING, BOTH LIVE AND NEUTRAL. After that you could find the Resistance between any points in the dead wiring using a multimeter. The resistance in this case between the two leads of the wall socket should be very high. P.S. After the changed question details about resistance value of the source right up to generator / transformer. YES you can find out out that resistance but for that you will have to ask the power supply company to shut down the power supply to the nearest transformer before your house then you may use a multimeter. You can not directly do it with the supply on. You can not go beyond the nearest transformer because beyond that the supply is isolated. maybe a real electrical engineer can give a better answer. Alex? Others? "Science is the belief in the ignorance of the experts" – Richard Feynman
Post #425,414 by scoenye 9/9/18 12:10:03 PM 9/9/18 12:10:03 PM Reply	From those Amazon comments One reported it comes on if you short the base and the center contact. Another liked the fact that it does not come on if the power fails but it was already switched off. So, best guess: when the power goes out, there is no actual break in the circuit. There is a closed loop to the nearest transformer. The tip and ring of the bulb can still "see" each other. If that condition holds, but no line voltage is detected => bulb comes on. Flip the switch => tip and ring lose contact => bulb stays off. Well, rarely. Unless it comes with a side order of fried squirrel because someone didn't bury the line between the pole and the house properly...

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