World's Biggest Question?

Why does the Knigth move they way it does?

Some pieces can attack others while not simultaneously attacked themselves. A bishop attacking a rook is not in danger of capture by the rook. A rook attacking a bishop is similarly immune. The queen can attack almost everything which attacks her. Chess needed a piece which could attack her with impunity, and as someone pointed out on a different thread, the squares closest to a queen which are not available to her are a knight's move away.

Now, why do people find it necessary to try to draw correlations between archaic piece names and their moves on a board?

(Also, while it hasn't come up, never say "centrifugal force" to a physicist unless you want to sound like an idiot. There is no such thing.)

Bur_Oak Post #92.

Wrote: "Also, while it hasn't come up, never say "centrifugal force" to a physicist unless you want to sound like an idiot. There is no such thing."

It is not because that one cannot explain something that it does not exist. Science over the centuries have come up with explanations of phenomenons unexplained to the time they came up with theories to explain.

When my dryer is on, it is the centrifugal force that moves the clothes outward and the gravity that lets them drop to the bottom over and over gain to dry them.  So what would you call thie force then? 

 This is a very acute question and I had to do research to try to give a full explanation.

The gravitational waves (assume they are waves, and that they exist as such) would be of extremely long wavelengths.  As a consequence, the virtual particles would not act as a barrier to them any more than dust particles act as a barrier to infrared light.  Therefore it may well be that if gravitational waves exist; their speed will be that of the original speed of light and not the speed of light now. 

What is gravity?  We think of it as the attraction of one MASS to another, but it is rather the effect of electromagnetic fields sent out by charged particles in motion (due to the battering of the ZPE).  Thus, the denser the mass, the more charged particles are there, the more motion they exhibit, the denser the electromagnetic field.  This is the attractive force we perceive as gravity.  As a result, this greater electromagnetic field will produce a greater number of virtual particles at any one time in any given volume.  Thus light is slowed even more in these areas and we then see it as gravity 'bending' light.  What we are actually seeing is light which is slowed more than normal in local denser fields of the ZPE. 

Gravity affects the speed of light by a very small amount.

Gravitational force, or gravity, is the mutual attraction between all masses in the universe. Most scientists assume that gravity travels at the speed of light, which is actually the propagation speed of electromagnetic waves (such as light) in a vacuum. The speed of light is a physical constant equal to exactly 299,792.458 kilometers per second.

Gravity is caused by the mass-energy density of space. This mass-energy density of space is determined by the square of the Wave-Amplitude and is always positive (squares are always positive). The Wave-Velocity is inversely proportional to the square root of the mass-energy density of space, the higher the mass-energy density of space, the slower the Wave-Velocity. As Matter and its resultant mass-energy density of space are always positive, this causes a slowing of In-Waves as they travel through other matter/wave-motions, and it is this property of Space that causes the natural ‘Gravitational’ attraction of all bodies, and explains why Gravity is always attractive.

Thus we realize that the presence of another ‘particle’ (as the Wave-Center of a Spherical Standing Wave/electron) will add to the density of space and slow down and thus distort the in-waves.  Part of the in-wave near the other particle will travel slower. Thus the slower part will cause the center of the in-wave to continually move. We will observe this as motion of the ‘particle’ though it is actually caused by a succession of wave-centers forming in different locations in Space. Slowing occurs because the presence of the waves of the other particle increases the mass-energy density of space. This increase is very slight compared the whole density of Space which is determined by the sum of the waves of all the matter in our Hubble Universe This Mass-energy density of space rule is Principle Two, an extended version of Mach's Principle. The small effect of one particle is the reason why gravity is such a small force - that is, about 10^-40 times smaller than the electric force.

Now You Understand the Origin of Gravity. That is it! Gravity is a result of the slowing of the In-Waves causing the wave center to move towards other Wave-Centers. Gravity has been touted as the most puzzling of the forces. Indeed, before the Wave Structure of Matter was discovered there were no explanations of gravity, only speculations. Millions of research dollars have been, and still are being spent trying to find 'gravitons', a mythical particle similar to the 'photon' which supposedly carried energy like a pack horse between two particles. In fact we now realize that this fundamental concept of motion is the cause of all the forces in nature. This is logical thinking because the motion concept contains the meaning of force.

Is there gravity in space?

There is gravity in space... only it's very, very small. It's called "microgravity" because it is so small. Gravity affects everything, everywhere, although in space it is usually such a small effect that it can be ignored.

Is Light Affected By Gravity?

Is light affected by gravity? If so, how can the speed of light be constant? Wouldn't the light coming off of the Sun be slower than the light we make here? If not, why doesn't light escape a black hole?

Yes, light is affected by gravity, but not in its speed. General Relativity (our best guess as to how the Universe works) gives two effects of gravity on light. It can bend light (which includes effects such as gravitational lensing), and it can change the energy of light. But it changes the energy by shifting the frequency of the light (gravitational redshift) not by changing light speed. Gravity bends light by warping space so that what the light beam sees as "straight" is not straight to an outside observer. The speed of light is still constant.

Dr. Eric Christian

Technically, there isn't. What arises is a perception problem from an improperly chosen frame of reference. It's like constructing a model of the universe with Earth as the fixed frame of reference, and trying to come up with equations that explain how the entire universe can revolve around it every 24 hours without flying apart.

The object moving in a circle has its motion defined in a frame of reference not its own. In that frame of reference, which is the only one that can properly explain its motion, centrifugal force is a myth. The only factors are momentum and centripetal acceleration -- the deflection of the object inward.

I like the sound of my voice.

And yet the clothes are pushing outward on the dryer.

/discussion

I'd hesitate to say that, really. The clothes are pushing on the dryer only in the sense that a piece of paper flattened onto an accelerating car's windshield is "being pushed" onto it. Assuming the surrounding is vacuum, there is no actual force keeping it there...though as you pointed out previously, from the car's frame of reference there is a fictitious force keeping it there.

... and the reactionary centrifugal force acts on the dryer wall. ...

No ... it's simply the inertia of the clothes. They are there already, and trying to travel in a straight line. They are being pushed in. There is nothing pushing them out.

There is a contact force between the clothes and the dryer. If a car hits me while coasting, it imparts a force on me. It wasn't experiencing a force toward me, it was just coasting because of inertia. But it still imparted a force on me.

You seriously cannot argue Newton's third law. It is a law.

The only forces working are momentum (90 degrees to the non-existant CF) and centripetal acceleration (180 degrees opposite). The net imbalance is what is responsible for the continuous change of direction. If there were an equal counterbalancing force, there should be no change of direction. Centrifugal force plus uniform circular motion? THAT is what would violate Newtonian laws.

If there was a centrifugal force, where the heck did it come from? We can explain the momentum, since the object(s) have been set in motion. The centrepital acceleration is obvious. But the mythical force has no origin; no formula that can account for it and the momentum and the centrepital acceleration.