Confused and have questions? We’ve got answers. With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors.


From Biology-Online Dictionary | Biology-Online Dictionary
Jump to: navigation, search


1. Radiant energy of a certain frequency range; e.g., radio and television employ radiant energy having a frequency between 105-1011 hz, while diagnostic x-rays have a frequency in the range of 3 × 1018 Hz.

2. In magnetic resonance imaging, the energy applied to switch or create a gradient in the magnetic field.