Thursday, October 30, 2008

8 02 19

"atrium" "ventricle"
heart cell (10um) inside -80mV -depolarization-> +20 relative to surface and contract in 0.2S
electric dipole formation same field direction both way but pulsive 0.2S apart.$V = \integral E \cdot dl$
2 - 3 milliVolt between standard 12 electrodes P R T U can be 3 = 2 on arms and on a leg.
"Other muscle cells generate E field also"
this year is 50 years low in sun activity. "magnetic pressure" $[N/m^2]$ $P = \frac{B^2}{2 \mu_0}$



Lec 19 | MIT 8.02 Electricity and Magnetism, Spring 2002

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