Wie funktioniert das Cavendish Experiment?
Das Grundprinzip von Cavendishs Apparatur ist die Messung kleinster Kräfte durch die Verdrillung eines dünnen Drahtes. Es gibt diverse Durchführungsformen für dieses Experiment. Beleuchtet man den am Draht befestigten Hohlspiegel mit einem Lichtstrahl, können kleinste Drehwinkel nachgewiesen werden.
Was kann man mit einer Drehwaage bestimmen?
„Drehwaage“ bedeutet, dass der Betrag des Winkels, um den ein Draht aus seiner Ruheform verdreht wird, Auskunft über das wirkende Drehmoment gibt. Hieraus lässt sich die zwischen den Testmassen wirkende Kraft berechnen. Konkret: In der Mitte hängt ein Draht, an dem waagerecht ein Stab angebracht ist.
What did the Cavendish experiment show?
The Cavendish experiment was the first to allow a calculation of the gravitational constant (G) by measuring the force of gravity between two masses in a laboratory framework. The original experiment was proposed by John Michell (1724-1793), who first constructed a torsion balance apparatus.
What did Henry Cavendish discover about gravity?
Jump to navigation Jump to search. The Cavendish experiment, performed in 1797–1798 by British scientist Henry Cavendish, was the first experiment to measure the force of gravity between masses in the laboratory and the first to yield accurate values for the gravitational constant.
How is the Cavendish apparatus built?
The Cavendish apparatus we currently use is built by PASCO. 1 The quartz fiber and smaller dumbbell are enclosed in a metal case with glass window for protection. A plan view of the spheres and dimensions are given in figure 2. A HeNe laser is used to provide the spot reflection.
What did Cavendish’s torsion balance experiment measure?
The experiment measured the faint gravitational attraction between the small balls and the larger ones. Vertical section drawing of Cavendish’s torsion balance instrument including the building in which it was housed.