I've been looking myself! You can easily make a simple apparatus to test the concept. However, here is the professional blown glass apparatus:
Hope this is helpful!
Asked in Dustin Hoffman, Philip Seymour Hoffman
Is Philip Seymour Hoffman related to Dustin Hoffman?
Well, Phillip Seymour is not related to Dustin Hoffman, and Dustin Hoffman is not related to Phillip Seymour. ...
Asked in Chemistry, Elements and Compounds
In the electrolysis of water which side of the voltameter produced a greater volume of gas hydrogen or oxygen?
Twice as much hydrogen is produced as oxygen.
Asked in Libraries and Library History
Where is the Hoffman Estates Branch Library in Hoffman Estates located?
The address of the Hoffman Estates Branch Library is: 1550 Hassell Road, Hoffman Estates, 60169 2629 ...