Energy Difference (AE)Between Two Different Spin States of a Nucleus With I=1/2 -1/2 antiparallel E 100 MHZ 200 MHz 300 MHz 400 MHz parallel +1/2 23,500 47,000 70,500 104,000 inc.magnetic field strength,Gauss Bo Energy Difference (DE) Between Two Different Spin States of a Nucleus With I=1/2 +1/2 -1/2 E 100 MHz 200 MHz 300 MHz 400 MHz 23,500 47,000 70,500 104,000 parallel antiparallel inc. magnetic field strength, Gauss B0