Today, mobile phones can not only talk and exchange messages, but also shoot videos and monitor sleep. Scientists at the University of Glasgow went even further: they used part of a mobile phone as a miniature sensor to measure the Earth's gravity.
The new device is very cheap and could replace the traditional bulky gravimeters that have been used for decades to measure the Earth's gravitational field.
In a new device called Wee-g, the "duties" of a gravimeter are performed by a telephone accelerometer, for which scientists have given it greater sensitivity.
The moon's gravitational pull is known to affect the ebb and flow. The moon and sun also affect the earth's crust, causing it to deform. The result is a slight contraction and expansion of the planet within 40 cm.However, even this tiny change in gravity affects the mass of the spring, forcing it to move up or down in the range of several tens of nanometers, which is able to fix the new gravimeter.