Practice question

Electromagnetic wavelength follows lambda equals speed of light divided by frequency. NMR Larmor frequencies for protons at common field strengths range 300 to 600 MHz, corresponding to radiowaves. Dividing 3x10^8 meters per second by 3x10^8 hertz yields approximately 1 meter wavelength, matching size of radio antennas and NMR coil dimensions. Such long wavelength, low photon energy ensures non-ionizing excitation, preventing bond breakage in biological samples. This physical scale explains instrumentation design, safety for in vivo magnetic resonance imaging, and deep penetration into tissue for medical diagnostics.