Effective mass (solid-state physics) from both sides gives where is the th element of , is the th element of , and are the th and th elements of , respectively, and is the total energy of the particle according to the Planck–Einstein relation. The index is contracted by the use of Einstein notation (there is an implicit summation over ). Since Newton's second law uses the inertial mass (not the gravitational mass), we can identify the inverse of this mass in the equation above as the tensor This tensor expresses the change in group velocity due to a change in crystal momentum. Its
Mercy Multiplied Henry Cloud and John Townsend and "The Battlefield of the Mind" by Joyce Meyer. In addition to individual and group counseling, other aspects of the Mercy Multiplied program include praise and worship, bible reading, listening to sermons and Christian teachings (both during scheduled class times as well as for prescribed counseling homework), cooking, cleaning and recreational time. During class time, residents are taught from preachers such as Beth Moore, Priscilla Shirer, Jordan Rubin, Joyce Meyer, Andy Stanley, Louie Giglio and Dave Ramsey. The Mercy Multiplied website states that they also facilitate "life-skills training", "nutritional care" and "financial management instruction". Since