how to avoid the electrical shock with metal at the winter(if you do not have gloves,spe:door knobs)?
341213
Static builds up with the friction of your shoes and a carpet rubbing together. Sometimes getting out of your car does the same thing. Most common cause is low humidity. Inside our houses during the winter the air gets very dry and static becomes a big problem. The dryness is usually caused by the heaters in the home. So, if it is a big problem, increase the humidity by using a humidifier.
272923
mechanical timer\nNO delay until closed\npencil lead and 120AC\nDon't hurt anybody
164162
Static electricity gets worse when it's dry... low humidity.  You can't do much about that outside, but you can always get a humidifier for your house. Use moisturizers on your skin, switch to cotton clothing, use dryer-sheets at the laundry, use a metal object (like a key) to touch metal things like doorknobs after shuffling along your rug.  Along those lines, pick up your feet when you walk so they're not sliding.  If no key is available, try grounding yourself by touching something like the wall before touching a metal object or a person (or pet!) Experiment with different shoes.  My leather boots are the worst!
967084
I would use a length of nichrome wire (see links below) stretched between a couple copper blocks. You could make some sort of pinch block out of the copper and connect a power supply to the copper. (or drill a hole through it with a set screw, tap a hole and us a pan head screw)  You will have to insulate the copper from the rest of the world so you don't short something out.  G-10 (a glass/epoxy resin) makes a good moderately high temperature insulator.  One of the contacts should be fixed and the other allowed to "float" and allow for changes in the length of the wire due to heating.  A spring could be used to provide tension or an air cylinder.  The power supply will depend on the length and diameter wire you choose.  If there is a problem with the electrical contacts heating up, you could run some cooling water through them.  Just drill a hole through it and 1/8 NPT pipe tape both ends.  You can plumb some water to it and it will keep the copper chilled.
245394
It depends on the weather and where you live. If you live in a farm area, you should always have extra canned goods on hand in case anything happens, like a snowstorm or your car breaking down. Always keep things on hand that can be opened & eaten without heating. Keep canned milk on hand, so that you have a ready meal with a box of cereal. If your electric goes out, make sure you have flashlights, kerosene lamps and safe candles. If your heat depends on the electric, don't open the door. Put more clothes on and cover up with blankets or comforters. Ususally the electric will be back up within a few hours, but be prepared for a couple of days if you're in a snowstorm. If possible, find someone who heats with wood and bunk with them until the electric is back up. Always have a well stocked medicine cabinet, in case you have a sudden illness or accident. Things to have would be bandaids, cotton balls, cotton swabs, burn cream, antibiotic cream, hydrogen peroxide, rubbing alcohol, an ace bandage, gauze, first aid tape, apspirin, non-aspirin pain reliever (Tylenol or Ibubrophen), allergy medications--including inhaler, bee sting kit--bees do come alive during the winter too, Epsom salts--for soaking strained muscles & such, Vicks vapo rub, Pepto Bismol, and other things that relate to your particular health & needs. The average home should have the above items anyway, because you never know when you might need them. If you have frostbite, or even think you have it, never rub your skin, and don't rub it with snow. Don't put it in hot water. You want to gently warm the skin, so you don't damage the tissues. Put the skin in cool water, gradually warming it every few minutes. I don't know if these are the top survival tips, but I believe these are things everyone should know. It's good to get some first aid training so that you'll be equipped to be of some use if you or someone you know needs help. There's nothing worse than watching someone you care about struggle, and you can only stand and watch, knowing you could hurt them worse with what you don't know. It's good that you want to know what to do. Take a course at your local hospital or tech school. Just remember, even with all that knowledge, you're not God. There's only so much you can do. The rest is up to Him. <*)))><
12951
Razor wire, proper fencing and support for said razor wire, very heavy gloves (try grease gloves like used in fast food places) or just the heavyist gloves possible, a stapler to attach whatever, or wire or whatever your setting up. And be very god damn careful.
853351
Friction in some materials causes electrons to be knocked free, resulting in a buildup of negative charge.  Enough of that builds up in your clothing and it's going to want to equalize itself by going to ground - a doorknob for example.  It gets there through your finger.  Static electricity shocks are basically a scaled-down version of what happens when lightning hits the earth.
80809
You have frostbite. Don't rub it, get to a doctor.
829354
Don't touch anything metal that is connected to the outside - i.e. plumbing, wiring.  \n\nMake sure you unplug your computer and tv sets (and anything else electronic) because a direct hit close by will fry the circuits in these things - or at least get some good surge protectors if you forget to unplug or aren't around.
42544
Static electricity. You need to be careful about this as it can severely damage your system. You may need one of those bracelets that help to discharge the static electricity before you get on your computer during the winter months as the weather & walking around on carpets is part of what helps to create the build-up...
436333
First find something fibrous like a carpet, a fuzzy carseat, or something else like that.  Rub your clothing on it for a good bit.  Make sure you aren't standing on or around something metal or it'll ground you instantly (thus negating any charge you'd build up).\n\nAdditionally, a factor that you have little control over--you must be in an area that has relatively low ambient humidity (<<10%).  If you live in a Rainforest, for example, pretty much nothing you do will generate enough static to create a shock.  Good luck and happy shocking.
250560
get rid of the carpet? cover the metal? wear antishock bracelets? find some way to nuetralize yourself when you enter?
935132
keep it far from electrodomestics\n\n:> peace\n.
1029513
has to be metal, preferably in several sheets not touching each other. Wood and plastic do not stop magnetic field.\n\nThick piece of lead would definitely work, and is completely safe (as long as you do not drop it on your foot and wash your hands afterwards)
1514
you must use insulated wire or you will effectivly just short out your power source.  most modern electro-magnets use wire that is insulated with a thin coating of a special varnish.  this allows more winding in a given space.  varnish insulated wire is available from nearly any electronics store or catalog or from any business that rewinds electric motors
125595
Leaving them turned off still won't help, because a lightning strike could still fry them. \n\nYou need them well grounded and in a Faraday cage if you want to avoid ALL pulses, including from lightning strikes.
349709
I would guess that the vibrations caused by the fridge's motor cause friction on the magnets holding the door closed.  The friction would heat the metal in the magnets like rubbing your hands together on a cold day.