Size: from small [S] (benchtop) to extra large [XL] (most of the hall) Setup Time: <10 min [t], 10-15 min [t+], >15 min [t++] /span> Rating: from good [★] to wow! [★★★★] or not rated [—]
The circuits are built into large wood boards that mount easily onto an easel. The boards are labeled using conventional symbolism. Bulbs and batteries are easily removable--just be careful not to burn your fingers on the hot bulbs!
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...
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...
A current carrying wire in a magnetic field experiences a force at right angles to both the field and current directions. The wire will jump up or down, depending upon the current direction.
A sudden change in current in an inductor - resistor circuit produces a very large back EMF. If that resistance is a bulb, it will shine much brighter during the change than during DC flow.
“Under the microscope one, to some extent, immediately sees a part of thermal energy in the form of mechanical energy of the moving particles.” —A. Einstein 1915
What it Shows
Tiny latex spheres in water, viewed under a microscope, undergo a kind of...
