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/en/tmeuf/students/primary-school/topics-content/endangered-species/grey-seal
Grey Seal Listen Pupils learn about life in the North Sea with the help of the example of the grey seal. Teaching material worksheet-2-characteristics.pdf 07/16/2015 96 KB (PDF) Download worksheet-1.p
/en/working-group-physics/histolab/thematical-subsections/hydrostatics/sikess-hydrometer
Sikes's Hydrometer Listen The hydrometer is a measurement device to determine the mass density of liquids. It was developed in the early 19th century and put to use by the British Customs Services to
/en/tmeuf/students/secondary-school/topics-content/ecosystems-habitats/beech-forest
Beech Forest Listen Old Beech Forests in Europe, World Heritage of UNESCO Pupils get to know the Beech Forest and its typical species. Teaching material worksheets-beech.pdf 07/16/2015 281 KB (PDF) Do
/en/working-group-physics/histolab/thematical-subsections/particle-physics-and-radioactivity/millikans-apparatus-for-the-determination-of-the-elementary-charge
Millikan's apparatus for the determination of the elementary charge Listen From 1909 until 1911 Robert A. Millikan together with his assistant Harvey Fletcher conducted experiments to determine the el
/en/working-group-physics/histolab/thematical-subsections/hydrostatics/litrameter
Litrameter Listen Robert Hare was a lecturer in chemistry at Pennsylvania University. His litrameter was represented in science periodicals of both the old and new world. By his own account he used st
/en/working-group-physics/histolab/thematical-subsections/astronomy/sextant
Sextant Listen The sextant was and still is a navigational instrument. It evolved from the ancient octant (eigth part of the circumference of a circle) and is used to measure the angular difference be
/en/working-group-physics/histolab/thematical-subsections/electricity/leyden-jars
Leyden Jars Listen A newly developed instrument shocked (most literally) scientists researching electricity in 1745: the Leyden Jar or Amplifiying Jar. The Prelate Ewald Jürgen von Kleist and the Leyd
/en/working-group-physics/histolab/thematical-subsections/electricity/voltaic-crown-of-cups
Voltaic Crown of Cups Listen The Crown of Cups is a modification of the Voltaic Pile. A rectangular plate of copper and zinc are connected by a wire soldered to both plates and thus an "electric eleme
/en/working-group-physics/histolab/thematical-subsections/electricity/tangent-galvanometer
Tangent Galvanometer Listen A galvanometer measures an electrical current by means of the electromagnetical properties of an induction coil and the Lorentz force. The instrument contains various coils
/en/working-group-physics/histolab/thematical-subsections/electricity/henleys-quadrant-electrometer
Henley's Quadrant Electrometer Listen Henley's variation of a quadrant electrometer consists of an upright column with a brass stand. Attached to the column is a wire with an elder pith ball. If the i