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
An apple falls from a tree. A planet orbits its sun. You labour your bicycle up a hill, and accelerate smoothly down the other side. All those things are down to gravity, working exactly asIsaac Newtonsaid it did almost three and a half centuries ago: a force that tells massive objects...
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 ...
What is the force of a falling 1 N apple, which eventually hits the ground? Does gravity affect centripetal force? Which force affects the wing of a plane during flight; lift, or air pressure? What determines the amount of inertia an object has?
Which is not a planet: the moon, Earth or Mars? What planet is between Venus and Mars? What planets have the greenhouse effect? What is geocentrism? What is unusual about the magnetosphere of Uranus? What is Aldebaran? What is the gravity on Ceres?
as being primarily a function of the initial mass of the clusters, tuned by further dependence on the metallicity—that mainly affects specific aspects of the nucleosynthesis processes involved—and on the environment, that likely determines the possibility of independent chemical evolution of the fragme...
I think you are overthinking this. One or more groups runs some simulations and determines there is a good chance the galaxies will merge. Another group runs a different simulation and gets different results. These are not experiments proving anything. A lot of asumptions are used in them bec...
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...
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...
Gravity and Precession – Currents in Space Celestial motion and the tilt of the earth’s axis … The precession of the equinoxes or of the earth’s axis may be part of a much larger cosmic context than we have so far believed. Here is a video that, based on the electric view of un...