DEMONSTRATION EXPERIMENTS

Transcription

1 DEMONSTRATION EXPERIMENTS FOR SECONDARY SCHOOL EDUCATION PHYSICS

2 THE NEW PHYSICS EXPERIMENTS COLLECTION FOR SECONDARY EDUCATION Especially the physics as natural science can be experienced directly with experiments. The students understanding will be deep and lasting. This especially applies for the secondary schools, where the attention of students is easily attracted and the enthusiasm is very spontaneous. To meet this demand for experimental teaching, we offer a collection with easy to use, robust and reliable devices. Therefore LEYBOLD has created a tailored collection which is affordable and enriches physics lessons for many years. MECHANICS HEAT ELECTRICITY ELECTRONICS OPTICS RADIOACTIVITY EXCLUSIVELY IN OUR NEW ONLINE SHOP

3 Determining the acceleration of gravity with a baffle plate and electronic stop clock The experiment instructions can be downloaded free of charge or purchasable completely on CD: Document Center S1 ( EN) Heat transfer Heat conduction Dependence of heat conduction in solid bodies upon material Large heat conduction apparatus D b Physics experiemnts Secondary Test objective 1. Investigation into the dependence of heat conduction in solid bodies upon material Setup Note: Thermal conductivity at 20 C: Material Thermal conductivity in W m K Copper Approx. 400 Aluminium Approx. 200 Brass Approx. 90 Iron Approx. 50 Glass Approx. 0.8 Wood Approx. 0.2 Equipment 1 Apparatus for demonstrating heat conduction Hotplate, 1500 W, 180 mm diam Execution - Half fill an aluminium pan with water. - Place the pan uncovered on the hotplate and heat the water to approx. 80 C. - Switch off hotplate and place cover with test rods on top of the pan. Close the opening for temperature measurement with plug. - Observe temperature indicators on the test rods. Observation Colour changes are to be observed on the metal test rods at periodic intervals. Sequence: Copper Aluminium Brass Iron. No colour changes should be observed on the glass and wood test rods. KR 403 Evaluation Heat conductance in solid bodies is dependant on material. The metals copper, aluminium, brass and iron are good thermal conductors. However, copper conducts heat better than aluminium, brass and iron. Glass and wood are poor thermal conductors. LD DIDACTIC GMBH Leyboldstrasse 1 D Hürth Phone (02233) Fax (02233) info@ld-didactic.de by LD Didactic GmbH Printed in the Federal Republic of German Technical alterations reserved FREE DOWNLOAD OF EXPERIMENT INSTRUCTIONS

4 MECHANICS Common properties of bodies Forces and Work Motion Mechanical oscillations and waves Acoustics Structure of substances and particles Mechanics of liquids and gases Detecting and recording of acoustic oscillations Propagation of sound in air and in vacuum HEAT Linear expansion of tubes when the temperature rises - Linear expansion apparatus D Thermal behaviour of bodies Thermal energy Heat transfer Changes of the state of aggregation Conservation of energy

5 ELECTRICITY Electrostatics Basic electric circuits Electromagnetism and induction Motors and generators Electrical safety in the household Phenomena of electrical conduction Measuring current in a simple circuit - Assembly using connector blocks

6 ELECTRONICS Basic electronic circuits Special resistors Semiconductor diodes Solar cells Transistors Transistor applications Connecting solar cells in series - Assembly using connector blocks RADIOACTIVITY Deflection of β rays by a magnetic field Detection of radioactive radiation Properties of radioactive radiation

7 Real images from a convex lens OPTICS Sources and propagation of light Formation of images by lenses and mirrors Optical instruments Light and colour Image formation and accommodation of the eye - Structure of the eye with lens model and translucent screen Additive colour mixing with three-fold lamp and three-fold colour filter

8 Equipment Note: Material EXCLUSIVELY IN THE ONLINE SHOP LD Technical details subject to change Heat transfer Heat conduction Dependence of heat conduction in solid bodies upon material Large heat conduction apparatus Test objective 1. Investigation into the dependence of heat conduction in solid bodies upon material Setup D b Physics experiemnts Secondary Thermal conductivity at 20 C: Thermal conductivity in W m K Copper Approx. 400 Aluminium Approx. 200 Brass Approx. 90 Iron Approx. 50 Glass Approx. 0.8 Wood Approx. 0.2 Apparatus for demonstrating heat conduction Hotplate, 1500 W, 180 mm diam Execution - Half fill an aluminium pan with water. - Place the pan uncovered on the hotplate and heat the water to approx. 80 C. - Switch off hotplate and place cover with test rods on top of the pan. Close the opening for temperature measurement with plug. - Observe temperature indicators on the test rods. Observation Colour changes are to be observed on the metal test rods at periodic intervals. Sequence: Copper Aluminium Brass Iron. Evaluation KR 403 No colour changes should be observed on the glass and wood test rods. Heat conductance in solid bodies is dependant on material. The metals copper, aluminium, brass and iron are good thermal conductors. However, copper conducts heat better than aluminium, brass and iron. Glass and wood are poor thermal conductors. LD DIDACTIC GMBH Leyboldstrasse 1 D Hürth Phone (02233) Fax (02233) info@ld-didactic.de by LD Didactic GmbH Printed in the Federal Republic of German Technical alterations reserved FREE DOWNLOAD OF EXPERIMENT INSTRUCTIONS BRANDS OF THE LD DIDACTIC GROUP