BIO-LOGY

United States
September 20, 2006 9:39pm CST
In the electron microscope, the beam of electrons is focused by__________. best RESPONSE WILL BE GIVEN TO 1st CORRECT ANSWER. PLEASE ANSWER ONLY IF U KNOW THE ANSWER 4 SURE.
1 response
@krishna183 (2286)
• India
21 Sep 06
should be using some source of electric field .. like in the case of cathode ray tubes .. just guessing