"tube coolers"

Investigate the relationship between the speed of a fluid and its pressure

Demonstrate the free-fall motion of objects in atmospheric pressure and vacuum conditions.

Students measure pressure with a precision manometer.

Hertz electron tube for quantitative investigations of Inelastic collisions of electrons with inert gas atoms.

Mounted on a wooden stand with a scale, the apparatus is comprised of a three-limbed glass tube with rubber tubing on the center.

High quality and reliable.

Explore beautiful 3-D patterns created by a magnetic field mess free.

Study Wavelengths and Energy All With One Device

The Student Coin and Feather Tube shows the two items in a vacuum, falling at the same rate.

Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied. The electron beam can be deflected electrically in the electric field of the built-in plate capacitor, and magnetically by using the Helmholtz coil pair (not included). By adjusting the electric field so that it cancels the magnetic deflection, it is possible to determine the specific charge (e/m) and the velocity of the electrons.