Search by term, person or webpage number

Demonstration device for the parabolic flight curve according to ‘sGravesande The demonstration device according to Willem Jacob 's Gravensande and Pieter van Musschenbroek was first mentioned in the

Mouchot's Solar Heater The Solar Heater on the model of Mouchot is a heliothermal engine by which food or water can be heated by solar radiation. Augustin Mouchot developed a string of heliothermal in

Geiger Müller counter tube The Geiger Müller counter tube is one of the earliest measurement devices for the field of radioactivity. Walter Müller developed it under the auspices of his thesis advisor

Millikan's apparatus for the determination of the elementary charge From 1909 until 1911 Robert A. Millikan together with his assistant Harvey Fletcher conducted experiments to determine the elementar

Barlow's Wheel Barlow's Wheel is the prototype of unipolar engine. Peter Barlow published its description in 1822 in the article "A curious electro-magnetic experiment". The star-shaped copper wheel e

Coulomb's Torsion Balance Coulomb's Torsion Balance is a setup based on two glass cylinders, one of 65cm length with a torsion micrometer (fig.2, right) is placed on a glass plate that rests on a larg

Electrostatic Generator The electrostatic generator is one of many variants of a frictional electrical machine used in the second half of the 18 th century. It became standard equipment for the system

Henley's Quadrant Electrometer 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 instrume

Leyden Jars 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 Leyden base

Tangent Galvanometer 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 with d