Free Fall Tube - 5.0cm inside diameter.
In a vacuum, objects fall at almost the same rate regardless of weight, material or shape. The equipment, also known as "feather and guinea", is used to demonstrate this truth, to study electrical discharge through rarefied gas and to display the "fountain in a vacuum". It consists of a break-resistant acrylic tube with rubber expansion plugs, a stopcock for vacuum connection and a heavy tripod base.
The expansion plugs are easily removed for cleaning and storage. Furnished with a metal disc and a feather. 100cm in length.
Shown on right.
Instructions for Free Fall Tube
Forensics Lab Supply Number 3178316.
Formerly Grau-Hall Corporation dba Grau-Hall Scientific.
Purchase orders may be sent by email to Staff @ grauhall.com or by FAX to 916 379 9639 or by mail to P. O. Box 279592, Sacramento, CA 95827-9592.
All products shipped from Wabash, Indiana.