Wiki! Force

In physics, force is what changes or tends to change a state of rest or motion in an object. Force causes objects to accelerate, add to the object’s overall pressure, change direction, or change shape. Force is measured in Newtons. (‘N’).

According to Newton’s Second Law of Motion, the formula for finding force is:

where  is the force,
 is the mass of an object,
and  is the acceleration of the object.

If one sets  to the standard gravity g, then another formula can be found:

where  is the weight of an object,
 is the mass of an object,
and  is the acceleration due to gravity at sea level.

at  about .

Force is a vector, so it has both a magnitude and a direction.

Another equation that is useful is:

 is force;  is the gravitational constant, which is used to show how gravity accelarates an object;  is the mass of one object;  is the mass of the second object; and  is the distance between the objects.

A force is always a push, pull, or a twist, and it affects objects by pushing them up, pulling them down, pushing them to a side, or by changing their motion or shape in some other way.

Spintronics :: The Secret of the Spin

Spintronics, sounds like a new dance move for the doof doof crowd but no, Spintronics is a new field of Quantum Physics that is working towards making the inner workings of computer chips smaller and faster.

Spintronics refers to the science of using the direction of electrons spinning around an atom to store information. If you could zoom into an atom you would see  electrons spinning around a central core – nucleus -, between the circling electrons and the core is a whole lot of space, even atoms aren’t solid. The direction the electrons circle the nucleus – left or right- is its spin. This spin is the main characteristic that scientists are trying to work with in order to make a whole new kind of gadget. By being able to alter the direction of the spin and then read it back at any time scientists will be able store information by using lots of atoms :: Read the full article »»»»