SEARCH Articles Figures Tables Blood oxygen-level-dependent magnetic resonance imaging Energy-level splitting, electron paramagnetic resonance Level Crossing Resonance Level and Hydraulic Resonance Level diagrams for two-color double resonance experiments Magnetic resonance blood oxygen-level-dependent Nuclear magnetic resonance energy levels Nuclear magnetic resonance energy-level diagram Nuclear magnetic resonance spectroscopy energy levels Optical Double-Resonance and Level-Crossing Experiments with Laser Excitation Resonance enhancement energy level diagrams Resonance levels R Resonant excitation of a two-level system free from relaxation Resonant excitation of a two-level system with relaxations Resonant level model