lightining rods reflect lightining from striking houses
lightining is hotter
lightining strikes from clouds not the ground
We use the IC1 555 in LPG gas detector to detect the leaking gases.
lightining
105
Yes, you can use a metal detector in the rain if....... The detector is made for underwater use. If the metal detector is made for land use, put a cover over the electronics housing. Many of the top manufacturers sell rain-proof covers. Be sure your headphones are waterproof!
Yep it does.
yes
no
To use the PLL (Phase Lock Loop) as FM detector, you need to know the Free-running frequency.
To use a smoke detector tester spray properly, follow these steps: Press the test button on the smoke detector to ensure it is working. Hold the tester spray about 6-12 inches away from the detector. Spray a short burst of the tester spray towards the detector. The smoke detector should sound an alarm within a few seconds if it is functioning correctly. If the alarm does not sound, replace the batteries or the detector itself.