this is known as baseload cycling and its cost ranges from $ 2 to $ 23 per megawatt hour this also reduces the environmental friendliness of wind power because a coal fired or natural gas power plant must be kept online in case there s no wind two plants are running to do the job of one
Accelerometer in an iPhone. Definition: An accelerometer is a sensor which measures the tilting motion and orientation of a mobile phone. The Apple iPhone was the first popular mobile phone to make the accelerometer a key feature of its user interface. The accelerometer is used to ensure photographs are presented in the correct way - portrait or landscape - depending on the way the phone is held. Accelerometers are also increasingly used as a means of user input, most noticeably in games where tilting and rotating the handset can control onscreen action.
Part of the Electronics glossary: An accelerometer is a device that measures changes in gravitational acceleration in a device it may be installed in. Accelerometers are used to measure acceleration, tilt and vibration in numerous devices. At rest, an accelerometer measures 1g: the earthâs gravitational pull, which registers 9.81 meters per second or 32.185 feet per second. Accelerometers that use the piezoelectric effect measure a small voltage change. Others measure capactitance between two components.