Places like Roca di Papa in Italy or Karpacz Gorny in Poland are known for so-called „gravitational anomalies“. Only precise measurements could clarify what these phenomena are really about. The most obvious explanation is an optical illusion that makes you …

## Has it so far been possible to artificially create a weightless environment?

On earth, artificial weightlessness can only be achieved by letting a body fall freely. This is achieved in parabolic flights with airplanes or in drop towers. The achievable duration ranges from a few seconds (drop tower) to a few minutes …

## What about the tides?

Tides are created by the rotation of the Earth and Moon around the common centre of mass. The difference forces between gravitational and centrifugal forces are decisive. These forces ensure that a flood mountain is formed on the Earth both …

## Why is there different gravitation on earth, what does it depend on and where is it greatest?

The size of the earth’s gravitional pull or gravity acceleration g depends on the mass distribution in the earth.

The size of the earth’s gravitational pull or gravity acceleration g depends on the mass distribution in the earth. The more …

## What does the unit ‚Gal‘ mean?

‚Gal‘ stands for Galileo and is another unit for the acceleration of gravity g, which is mainly used in geophysics. It is 1 Gal = 10 -2 m/s², thus g= 981 Gal. For the description of small effects mGal = …

## What is the difference between G and g?

„Capital G“ is the constant of proportionality in Newton’s law of gravit. It established a formal relationship between the masses, the distance and the resulting gravitational force. It is now assumed that G is not constant, but could depend on …