T2 * relaxation refers to the decay of transverse magnetization seen with gradient-echo (GRE) sequences. T2 * relaxation is one of the main determinants of image contrast with GRE sequences and forms the basis for many magnetic resonance (MR) applications.2 * is shorter than T2 (Fig 1), and their relationship can be expressed by the following equation (3), where Î³ is the gyromagnetic ratio: 1/T2 * = 1/T2 + Î³ Î´B inhom, or 1/T2 * = 1/T2 + 1/T2â², where 1/T2â² = Î³ Î´B inhom, and Î´B inhom is the magnetic field inhomogeneity across a voxel.
Simpler answer: Energy used per day is measured in watt-hours, or more usually kilowatt-hours, and a typical house might use 35 kilowatt-hours per day. That is equal to 1.458 kilowatt-hours per hour, in other words an average power of 1.458 kilowatts.
The number shown in the tables below is cost (cents) per kilowatt hour (kWh). Green denotes the lowest rate that year while red denotes the highest. On average, a home in the US uses 911 kWh of electricity per month.