However, iterative methods of relaxation have been used to solve Lagrangian relaxations. Clonus is a series of involuntary, rhythmic, muscular contractions and relaxations. In general, the relaxations outweighs the contractions. In nuclear magnetic resonance (NMR), various relaxations are the properties that it measures. Therefore, the division procedures provide various kinds of relaxations. Temperature is the variable that can be changed to bring relaxations into measurable time ranges. Some operating systems allow these relaxations as well when reading optical discs. "Low Frequency Dielectric Relaxations in Nematics and Dual-Frequency Addressing of Field-Effects"; M. Schadt. Bell-ringing and music were his chief relaxations. His relaxations were gardening and chamber music. See here for a proof that relaxations are always possible when negative-weight cycles exist. On 1 February 2015, similar relaxations were introduced in Queensland.