Many cell phones today have microelectromechanical systems that can detect acceleration. By tweaking the system a little, these devices can detect acceleration due to gravity, claims a paper in a recent issue of Nature.
The new device is sensitive enough to detect tidal forces on earth. From being a mere accelerometer, it becomes a gravimeter that can measure tidal forces.
Most present gravimeters are heavy. But this new device is so light that you can use it on a drone and let it survey the land. It will give you clues about underground reservoirs of oil, magma etc.
By putting the device into handphones, and crowdsourcing the data while people travel around, we will be able to map what lies underground.
The new device is sensitive enough to detect tidal forces on earth. From being a mere accelerometer, it becomes a gravimeter that can measure tidal forces.
Most present gravimeters are heavy. But this new device is so light that you can use it on a drone and let it survey the land. It will give you clues about underground reservoirs of oil, magma etc.
By putting the device into handphones, and crowdsourcing the data while people travel around, we will be able to map what lies underground.
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