Illustrate how a surface charge can be induced on insulators by polarization.
AND
Why is an electrostatic spray gun more efficient than an ordinary spray gun?
Sorry, I'm a bit naive!
2006-07-02 08:40:52 · 7 answers · asked by krazych1nky 5 in Science & Mathematics ➔ Physics
Second question is answered, now the first?
2006-07-02 09:09:26 · update #1
I haven't started physics yet and I'm doing this for my Bionanotechnology camp. I'll be starting physics in September.
2006-07-02 09:20:48 · update #2
Place the insulator in an electrostatic field. The electrons of the insulator's substance closest to the positive field electrode will be attracted to it, distorting their orbitals slightly to create an apparent negative charge. Same deal on the opposite side, with the polarities reversed.
The point of an electrostatic spray gun is to increase the amount of paint reaching the work by placing a charge on the paint droplets and an opposite charge on the work so that the droplets are attracted to it. This will reduce the waste involved from droplets missing the work.
Robert A. Saunders, Lake Stevens, WA.
2006-07-02 10:03:08 · answer #1 · answered by Anonymous · 4⤊ 3⤋
Charging a surface that is to be sprayed with an electric charge that is opposite to the charge applied to the sprayed material makes the surface attract the spray droplets. A lot less paint is lost to the spray hood's walls. Thus it is more economical.
2006-07-02 15:47:04 · answer #2 · answered by Dan S 6 · 0⤊ 0⤋
A surface charge can be induced by placing a an electric charge near an object that is grounded, thereby drawing all of the poitive or negative charges to either end of the object. The gound can then be removed and the electric charge can be removed. this isolates the charges in the original object. I believe that is the answer you are looking for.
2006-07-02 16:05:08 · answer #3 · answered by Jacob G 2 · 0⤊ 0⤋
I can answer the second question.... electrostatic spray guns spray paint and the object you are spraying is attached to a current which attracts all the paint molecules.
2006-07-02 15:44:39 · answer #4 · answered by Tom Van Dyke 2 · 0⤊ 0⤋
the surface which is being painted is given opposite charge of that paint material because when we spray it is the painted body eg car will attract drops of paint because like charges repels and unlike attract
2006-07-02 20:48:21 · answer #5 · answered by ghulamalimurtaza 3 · 0⤊ 0⤋
Somehow I feel like you want people to do your homework for you.
Also, illustrations are difficult in a purely textual medium which gives away the homework bit. I'm sure your textbook has the answer if you bother to look.
2006-07-02 16:17:12 · answer #6 · answered by Whitney S 3 · 0⤊ 0⤋
You also have bad grammar; you're not naive, you are ignorant of the laws of physics. Unfortunately, so am I.
2006-07-02 15:44:19 · answer #7 · answered by Robert B 3 · 0⤊ 0⤋