ArtelPlus has released a new version of BatteryZzz 2.0, an application warning a user with a sound signal of critical discharge and full charge of his Windows Mobile device battery.
This spreadsheet analyzes power cycles (Carnot, Brayton, Otto and Diesel), power cycle components and processes (compression, combustion and expansion) and compressible flow (velocity of sound, Mach number, stagnation and static properties, nozzle, normal shock, diffuser and thrust).