This morning the power was out, but I figured that it wouldn't last long. I lit some candles and got the kids breakfast. After blowing out one candle, the smoke detector went off but then it kept going off until the power came back on. Even though there was no more smoke Aren't they supposed to stop going off? I am glad that the smoke detector works, but I am frustrated that I had to listen to it for almost an hour? Any ideas?
Listen, you're probably doing everything right but you must know. If you're in a dorm you have an in-house system (all the detectors are connected throughout the building). Contact the maintenance the dept. because if something is wrong with your detector it may effect the others. So just call. It will not hurt anything for them. But may hurt those around you, so be safe!!!
You are researching fire hydrants from WW2? I gotta askwhy?
There are a couple of finger detector devices. Pyroelectric detectors measure heat and can be correlated with body temperature or at least peripheral temperature. There are also finger thermisters that use differences in light (change in light that passes through the finger to measure peripheral blood flow to determine vasoconstriction but these (or something very similar) can be used to measure pulse. These are usually separate devices (temperature or blood flow) and I have used both. They are in spring loaded clips (sort of like an old clothes pin). You squeeze the two wings on one end which opens the mouth of the clip, which is then placed over the finger. The output then goes to another instrument that transforms the signal (electrical, photopic, etc.) into a quantifiable signal that you calibrate against some known standard (e.g., temperature).
