of electricity. like thoses pens that are used to shock your friends since they think its actually a real pen... how are thoses made and what causes them to work???\n\nthanks
209465
As I said on the other question Piazo crystals are banged together.
648655
There is a great article to read on this, from How Stuff Works.  Its under "How Lightning Works", but it talks about both lightning and thunder.  My students got a lot out of it.
229251
Only if you have some kind of metal in your mouth, like a filling or crown.\nIt basically creates a battery, seeing that a battery needs and acid (saliva), and two metals (aluminum foil and the metal in your mouth).
116789
Solar or light can be converted into current and batteries can be made at a smaller scale. Example is, small calculators are powered by solar cells.\n\nAs for as construction of those batteries they are made of smaller cells and then smaller cells are joint with other smaller cells to make little large cells. Its very expensive to make them on commercial level thats why we are addicted to oil.\n\nCheap things sometimes don't come cheap.
276889
A generator produces a current by moving a wire through a magnetic field.  If you had an infinitely large magnetic field, you could move in one direction forever and produce a dc current.  However, it isn't practical to do that.\n\nInstead, you put a ball of wire inside a much smaller magnetic field and you spin it.  The ends of the wire have to be touching something to complete the circuit so electrons can flow.  At one part of the circle, the wire is moving left to right across the magnetic field and causes electrons to flow in one direction in the wire, in another part of the circle, the wire is moving from right to left and the electrons flow in the opposite direction.  This is what causes the current to alternate.\n\nSo, when converting motive energy into electricity, ac current is the easiest to produce.  This is like what is produced by a car's alternator or a hydro-electric plant.
135845
i like their ink sacs!  and if you dissect one, they have a special pen (remnants of the shell in molluscs) that you can write with!  so fun!  \n\nps. there are seen in all squids
198517
It's spelled piezo.\n\nA material which exhibits the piezo-electric effect produces a voltage across one axis when struck or flexed in another axis.  \n\nIn gas stove and barbecue lighters and the pens which you speak of the resultant voltage is stepped up via a transfomer.\n\nThe same effect is used in "crystal" microphones and was used in crystal pick-up cartridges.
455138
Holding a metal object that you touch the thing that'll shock you works. The charge still goes through your body, but it enters your hand from the object across a large area instead of via a small spark, so no one nerve is stimulated sufficiently for you to notice it.
94668
How will he SHOW that an electric current has been produced? It won't be sparking or anything like that.\n\nHere's a very crude, but effective way to prove an electric current has been produced. Buy a D-sized battery and some non-insulated wire. Using thick gloves, place one end of the wire on the + side of the battery and the other end of the wire on the - side. Hold them in place. Almost immediately, the wire will become very hot. The heat produced is due to friction. The electrons (electric current) traveling from one end of the battery to the other rub against the particles that make up the wire. The rubbing produces heat, like when you rub your hands together really fast.\n\nAs an added bonus, wrap that same wire around a galvanized nail about 8 times, (be sure to leave both wire ends free)then repeat the steps above. The nail becomes magnetized and will pick up paper clips. The more coils you wrap around the nail, the more magnetized it will be. This is called an electromagnet because a magnet was produced by an electric current.
10912
here's what you need:\n\n1.18-gauge copper wire (smaller gauge will work too,2. but 18-gauge is stiffer)\n3.Wire clippers\n4.Steel paper clip (Some people find that a 2-inch 5.strip of zinc works better) \n6.Sheet of coarse sandpaper\n7.Lemon\n8.Help from an older friend or an adult\n\n\nhere's what you need to do:\n\n\nHave your older friend or an adult strip 2 inches of insulation off the copper wire. Clip the 2 inches of bare wire with the clippers.\n\nStraighten out the paper clip and cut about 2 inches of the straightened steel wire, or use a 2-inch piece or strip of zinc.\n\nUse sandpaper to smooth any rough spots on the ends of the wire and paper clip or piece of zinc.\n\nSqueeze the lemon gently with your hands. But don't rupture the lemon's skin. Rolling it on a table with a little pressure works great. \n \nPush the pieces of the paper clip and the wire into the lemon so they are as close together as you can get them without touching.\n\nMoisten your tongue with saliva. Touch the tip of your wet tongue to the free ends of the two wires.\n\nYou should be able to feel a slight tingle on the tip of your tongue and taste something metallic.\n\n\n\nwhat you will discover\n\nThe lemon battery is called a voltaic battery, which changes chemical energy into electrical energy.\n\nThe battery is made up of two different metals (the steel paper clip and the copper wire). These are called electrodes, which are the parts of a battery where electric current enters or leaves the battery. The electrodes are placed in a liquid containing an electrolyte, which is a solution that can conduct electricity.\n\nIn a solution of water and an electrolyte, like the acid in the lemon, an excess of electrons collects on one end of the electrodes. At the same time, electrons are lost from the other electrode.\n\nTouching the electrodes to your tongue closes the circuit and allows an small electric current to flow. A single lemon produces about 7/10 of a volt of electricity. If you connected two lemons together, you can power an inexpensive digital watch (uses about 1.5 volts). (Use a length of thin, flexible wire to connect the silver wire of one lemon to the copper wire of the other lemon. Then attach thin wires from the other two wires in the lemons to where a battery's positive and negative poles connect to power the watch.)\n\nThe tingle felt in your tongue and the metallic taste is due to the movement of electrons through the saliva on your tongue.\n\n\n--well, i just searched for it. hope i helped in a way ^_^\n\n-paul
152910
you mean static shocks its built up sdick electricity and when you touch metal it discharges. there for shocking you. its not real elctrisity.
455515
Well most plasmoids are charged, since they are ionic in nature, allowing for fairly easy control via electromagnetic fields.\n\nEasiest practical example is a plasma torch (also called a plasma cutter) used in the steel industry. A VERY powerful electric arc is created at the front end of a nozzle through which a very powerful jet of air runs. The high energy turns the air into plasma which can then be used to cut through solid steel like a knife through butter
13534
How about purchasing them online at different websites-\n\nhttp://www.maxmax.com/aUVBlueInvisibleInks.htm\nhttp://www.kopes.com/gadgets/invisible-ink-pen-uv-light.htm\nhttp://store.yahoo.com/airline/fisppencaspp2.html\n\nIsn't this the same as magic ink pens too?\nhttp://www.ustoy.com/cgi-bin/ustoy_cgi.sh/WService=ustoy/ustoy.com/novelty/product.htm?stateInfo=?&dept_id=151&pf_id=1043
32742
The electric company generates (makes) electricty, which they send through wires. These wires go to every house. In some places, you can seem them on the street, but in most places they are underground.\n\nWhen you flip a switch, your are connecting the lightbulb to one of these wires. So electricity flows from the wire to the lightbulb. When you close the switch, you disconnect the 2 wires.\n\nThat is what happens. How electricty is made, and how lightbulbs and switches works is a bit more complicated, but for that I suggest Wikipedia:\n\nhttp://en.wikipedia.org/wiki/Electricity\n\nThe basic idea behind generating electricity though, is that you are freeing electrons from atoms, which then go to other atom/s that absorb them.
272115
Nanotech is indeed real. Have you never seen surveillance cameras the size of a dime, and what about tracking devices about the size of a cigarette lighter?Do you remember how many different components use to be in a regular am radio & tv set? Tubes, capacitors, resistors, coils, etc. are now on a pc circuit board in the form of an integrated circuit about 1"x1/4". The first computer ever devised needed many rooms to house. The laptop now is less than the sise of some wire bound notebooks high school kids carry.
449724
Get a pen that can only show when u have a blue or black light present and write like a speacial code that only you will know. If the code doesnt show then it was copied.
250488
there is a thing like that...? im puzzled