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i think i already know that the answer is NO, but why not. why can't we make an electron gun or laser that just shoots electrons in a straight line over large distances with no medium?

2007-01-26 10:57:50 · 5 answers · asked by JizZ E. Jizzy 2 in Science & Mathematics Physics

5 answers

electricity is defined as lectrons flowing in a medium. electrons flying in vaccum is called beta radiaton. Electric fields however, can travel through space, as in electromagnetic waves where electric and magnetic fields induces each other and moves as a wave through space.

2007-01-26 11:04:55 · answer #1 · answered by Link 2 · 1 0

Electricity can arc through space.
Takes about 4000 Volts per inch.
More as the pressure goes up.
(That is why an engine needs 20,000 V.+ to arc across a 0.040 inch spark plug gap.)
Beta radiation is electrons or positrons from radioactive decay.
Cathode rays (Yes, as in CRT) are electrons flowing in a vacuum.

2007-01-26 19:34:10 · answer #2 · answered by J C 5 · 1 0

Medium?

2007-01-26 19:04:54 · answer #3 · answered by Wondrer 4 · 0 2

no electric power can in the form of electrmatnetic waves, but electricity needs a conductor

2007-01-26 19:09:23 · answer #4 · answered by walter_b_marvin 5 · 1 0

indeed

2007-01-26 23:39:54 · answer #5 · answered by smokesha 3 · 0 0

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