The European Organization for Nuclear Research (CERN, from the French), which employees over two thousand staff members and has hosted more than ten thousand fellows, associates, and apprentices, is one of the greatest...

This Quick Time movie describes the operation of a dual beam spectrometer using an optical wedge to improve the accuracy of the absorbance measurement. The movie includes narration and graphs which explain the...

This resource provides an introductory activity on electrons in atoms and molecules. Core concepts include the formation of atoms, chemical bonding, chemical polarity and atoms in electric fields. The interactive module...

This resource shows the energy states for single or multiple square-well systems, modeling the properties of a periodic solid. The number of wells, and their depth, width, and spacing can all be changed. Additionally,...

Fractals are unusual geometric structures that can be used to analyze many biologic structures not amenable to conventional analysis. The purpose of this exhibit is to teach some of the fundamentals of fractal analysis,...