GUINEA and FEATHER APPARATUS

GUINEA and FEATHER APPARATUS

•  This Guinea and Feather Apparatus demonstrates how the Earth's gravity accelerates all objects equally, regardless of mass i.e. that a heavy object (a British guinea and a light object (a feather) will fall at exactly the same rate.
•  Comprises a glass tube 1-metre long x 50mm o.d. with a solid rubber stopper at one end plus a 1-hole rubber stopper at the other end.
•  A piece of hose is attached to the rubber stopper for connecting to a vacuum pump to evacuate air from the glass tube.
•  A supplied Mohr clip is used to seal the rubber tubing once air is evacuated.
•  (Note: Photo is for reference. Product may vary.)

(Wikipedia excerpt: ..."...The standard acceleration of gravity or standard acceleration of free fall, often called simply standard gravity and denoted by ɡ0 or ɡn, is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. It is a constant defined by standard as 9.80665 m/s2 (about 32.17405 ft/s2). This value was established by the third General Conference on Weights and Measures (1901, CR 70) and used to define the standard weight of an object as the product of its mass and this nominal acceleration.[1][2] The acceleration of a body near the surface of the Earth is due to the combined effects of gravity and centrifugal acceleration from the rotation of the Earth (but the latter is small enough to be negligible for most purposes); the total (the apparent gravity) is about 0.5% greater at the poles than at the Equator.[3][4]..")

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