Lower Secondary Education

• V1 „Crying chestnut branch“ in water under UV-radiation; as comparison in daylight
• V2 Bank notes, credit cards, fabrics, „forensic science“ etc. under the „black light“ of an UV-lamp
• V3 paper or thin-layer chromatography of leaf extracts, red luminescence of green chlorophyll stains under UV-radiation
• V4 Preparation of a phosphorescent sample
• V5 Duration of the phosphorescence of fluoresceine-boric acid-samples at different temperatures

Technical contents

Color as material property that is dependent on the type of light that is used to observe the material; chromatography as separation method for a mixture of substances

Scope

Materials and their properties, separation of mixtures and detection of the separated substances

Information

More experiments on fluorescent colors can be found in publications of M. Ducci et al.