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  1. P

    I need every ones help about thompsons

    i need to know how does thompsonfind out relation between electric field & magnetic field.(in cathodi lamps) e/m=1/76 x 10,00000000 c/g ??????? tnx bye
  2. P

    Why we use composed lentiform in optical science?

    why we use composed lentiform in optical science?
  3. P

    Sorry,i did`nt mean bulb lamps i said a lighting!

    hi guys i want know how many watts does a lighting have? --------------------------------------------------------- (lighting=the power that exchange between clouds an earth) (im sorry about my english words becaus i dont speak english) thanks bye
  4. P

    How many kilowatts does a light have?

    hi i want to know how many kilowatts does a light have? & i want to know who invented lightning conductor? please answer it sooooooon! or email it to: pedramlolo@hotmail.com pedram_atb87@yahoo.com bye
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