Structure of the Atom


A Geiger counter indicates the presence of radioactive sources.
Radioactivity Setup

Photoelectric Effect

An electroscope is used to convey a basic concept of the photoelectric effect. UV light discharges a negatively charged zinc plate and the leaves of the electroscope move closer to each other.

Cathode Ray Tubes

An electron beam in a catahode ray tube can be deflected with a magnetic or electric field. An electron beam can cause a pinwheel in a CRT to turn. When an object is placed in the path of an electron beam, the rays cast a shadow.
Deflected Electron Beam

Absorption Spectra

Dyes and neodymium glass absorb portions of the spectrum.
Red Dye Spectrum


© Copyright 2012 Email: Randy Sullivan, University of Oregon Chemistry Department and UO Libraries Interactive Media Group