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Behn's Tube


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yeah you barometric pressure decreases with increasing height to
demonstrate this a glass tube with openings at its ends is attached to a
gas supply when all the air has been displaced the 2 flames only 1st that but the
you you with the tube in the horizontal position the 2 flames burned with equal brightness when the tube is tilted by only a few centimeters the upper flame burns more brightly
the Schlieren of the hot gasses or nicely scene in the shadow projection on
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Computer animation


Formal Metadata

Title Behn's Tube
Alternative Title Behnsches Rohr
Title of Series The Physics Experiments of Robert Wichard Pohl (1884 - 1976)
Number of Parts 62
Author Lüders, Klaus
Pohl, Robert Otto
Beuermann, Gustav
Samwer, Konrad
Contributors Stickan, Walter (Redaktion)
Lechner, Kuno (Kamera)
Gerstenberg, Thomas (Ton)
Yousefpour, Abbas (Schnitt)
License CC Attribution - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
DOI 10.3203/IWF/C-14853eng
IWF Signature C 14853
Publisher IWF (Göttingen)
Release Date 2004
Language English
Producer IWF (Göttingen)
Production Year 2003

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IWF Technical Data Video-Clip ; F, 1 min 34 sec

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Subject Area Physics
Abstract A balloon filled with a gas lighter than air will rise. This is explained as evidence that the pressure in the heavier air decreases more rapidly with increasing height than that of the lighter gas inside the balloon.
Keywords mechanics
ideal gas
barometric pressure

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