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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Mar 2008 20:20:22 IST
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What is meaning and concepts behind Q factor in modern physics
Please tell me in a simplified way for which i promise to rate u
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6 Mar 2008 20:29:23 IST
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Q factor is a dimensionless parameter that compares the time constant for decay of an oscillating physical system's amplitude to its oscillation period . Equivalently, it compares the frequency at which a system oscillates to the rate at which it dissipates its energy. A higher Q indicates a lower rate of energy dissipation relative to the oscillation frequency, so the oscillations die out more slowly.
Generally Q is defined to be
Q =omega *{Energy Stored} /power loss
= 2 pie * energy stored / energy dissipated per cycle
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6 Mar 2008 22:08:07 IST
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i am asking q factor in modern physics not of LCR circuit
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6 Mar 2008 22:37:01 IST
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q factor is defined as the energy released during a nuclear process....
the main point is that q = mass defect *(c^2)
where mass dfct=mass of prodcts-mass of reactnts
so,if the q factr is -ve,then the reaction does nt take place spontaneously...
if the q factr is +ve,the reaction is spontaneous.....
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"Many of the things you can count,dont count....
Many of the things you cant count,really do count...."-Albert Einstein
"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them"-William Bragg
"An inexplicable fact is infinitely preferable to an incomprehensible mystery"-F. Soddy
RISHIPRATIM MAZUMDAR
NIT DURGAPUR
1ST YEAR,ELECTRONICS AND COMMUNICATIONS
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