We also describe some of the strategies for the experimental search for a quantum gravity theory.doi:10.1007/s11214-009-9559-9Claus LmmerzahlSpringer NetherlandsSpace Science ReviewsL¨ammerzahl, C., 2009, What determines the nature of grav- ity? A phenomenological approach, Space Sci. Rev., ...
What is the gravity on the moon? What is a full eclipse of the moon? Where does light pollution come from? What is a reflecting telescope? What is the lunar solar cycle? If half of the moon is always facing the sun, and half is facing the Earth, why does it look like there are ...
The formula for gravitational potential energy is PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object relative to a reference point. This formula assumes a constant gravitational field. What is the difference between gravitat...
the pivot point attains a location somewhere between 1/3rdand 1/6thof the vessel’s length from bow or stern, depending on the hull form, speed and rudder moment applied. The location of the pivot point determines the radius of the circle completed or tended during turning. A smaller circle...
large mass, Earth, beneath our feet that attracts them, and everything else, downwards towards it. It is the presence of large clumps of mass all over the universe, that ensures it determines how the universe works on a grand scale, on the level of planets,galaxiesand clusters of galaxies...
Here we examine a fundamental question: do aeolian dunes stop growing and, if so, what determines their ultimate size? Earth’s major sand seas are populated by giant sand dunes, evolved over tens of thousands of years. We perform a global analysis of the topography of these giant dunes, ...
Essentially, gravity is an attractive force between objects. Most people are familiar with gravity as the reason behind things staying on the Earth's surface, or "what goes up, must come down," but gravity actually has a much vaster significance. Gravity is responsible for the formation of ou...
Unbalance happens when the centre of gravity of a rotating component is off relative to the centre of rotation. This can e.g. happen when having eccentric mass. Common types of unbalance are: force unbalance, couple unbalanced, and dynamic unbalance. Force unbalance can be corrected by balan...
The planet’s mass and radius affect habitability in many ways. It determines the extent of production of a magnetic field, which is necessary to protect the planet from charged matter coming from the star. The mass also determines the gravitational force. This plays a role in atmospheric heigh...
What determines the spring equinox? What causes the movement of air throughout the atmosphere? Why does temperature not increase during a phase change? How does the rock cycle affect the Earth? Why does retrograde metamorphism not overprint on prograde metamorphism?