Nuclear and Elementary Particle Physics

What it shows:  Using the classical description of the motion of a spin in an external magnetic field, the demonstration helps visualize NMR in the time domain. The nuclear magnet and its classical vector model are represented by a spinning ball with...

When the electrons in a cathode ray tube collide with the glass, they decelerate rapidly. The radiation emitted by the electrons is called Bremsstrahlung or braking radiation.

What it shows

In 1895, Wilhelm Röntgen discovered that a beam of cathode rays...

A beam of cathode rays (electrons) impinging on a paddle wheel cause it to spin and travel down the vacuum tube.

What it Shows

A paddle wheel is suspended by its axle inside a Crookes tube so that when the paddle vanes spin the entire wheel is free to...

What it shows:

Potential energy curve with potential barrier illustrates electron-atom, atom-atom or ion-ion interactions.

How it works:

This is a one dimensional potential well model with a potential hill that can be used to represent several scenarios...

Orbital motion simulated by ball rolling on wooden potential well.

What it shows:

Motion in a central potential is demonstrated by a ball rolling on a circular 1/r curved surface.

How it works:

The 1/r potential well simulates the gravitational potential...

What it shows:

A qualitative demonstration of Rutherford's α-particle scattering experiment using magnetic pucks on an air table.

How it works:

In its simplest form, we use an Ealing air table, ¹ 1m square, with a fixed magnetic puck at the center. A...

Image on black and white television is deflected by a magnet, not unlike the Maltese Cross.

What it shows:
The television is basically a sophisticated cathode ray tube. The electron beam in the TV is influenced by magnetic fields in the same way as in...

What it shows: 

A collimated beam of Cathode rays can be deflected by a magnetic field.

How it works: 

This Crookes tube has an anode and cathode at opposite ends of a cylindrical tube, with a horizontal slit near the cathode and a vertical fluorescent...

Maltese cross obstacle and fluorescing glass show that electrons in a Crookes tube travel in straight lines and are affected by magnetic fields.

What it shows:

Cathode rays in a Crookes tube are seen to travel in straight lines by casting a sharp shadow of...

What it shows:

Ink is squirted into a fluid and mixed in until it disappears. By precisely undoing the motions in the reverse direction, the ink becomes unmixed! The demonstration seems to defy thermodynamics in that it appears that entropy decreases...