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# Why Do Particles Move

### Why do particles moving in circular motion emit em radiation?

For example particles moving in a synchrotron . Which energy of the particle is converted to the energy of the radiation ? What is the relation between this energy and the change in direction of the

### Gases, Liquids, and Solids

Gases, Liquids, and Solids

Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. The following figure illustrates the microscopic differences.

Particles in a:

liquid are close together with no regular arrangement.

solid are tightly packed, usually in a regular pattern.

### Why do Molecules move?

This may seem like a simple question, but I am hoping to find a rather in depth answer. My father and I were discussing a lesson I had learned in...

### Longitudinal and Transverse Wave Motion

Another example of waves with both longitudinal and transverse motion may be found in solids as Rayleigh surface waves (named after John W. Strutt, 3rd Baron Rayleigh who first studied them in 1885). The particles in a solid, through which a Rayleigh surface wave passes, move in elliptical paths, with the major axis of the ellipse perpendicular to the surface of the solid. As the depth into the solid increases the "width" of the elliptical path decreases.

### BBC

Air, helium and chlorine are gases at room temperature. Water vapour is water as a gas.

The particles in a gas are:

arranged in a random way

The particles in a gas can:

move quickly in all directions

There are no bonds between the particles in a gas, so they are free to move in any direction.

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### States of Matter

States of Matter

Gases, liquids and solids are all made up of microscopic particles, but the behaviors of these particles differ in the three phases. The following figure illustrates the microscopic differences.

Particles in a:

liquid are close together with no regular arrangement.

solid are tightly packed, usually in a regular pattern.

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