Slow physics: recording the ascent and descent of a water column

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)

Interna författare/redaktörer

Publikationens författare: Johan Lindén, Kjell-Mikael Källmann, Erik Holm
Förläggare: IOP
Förlagsort: England
Publiceringsår: 2018
Tidskrift: Physics Education
Tidskriftsakronym: phys. educ.
Volym: 53
Nummer: 4


A glass filled with carbon dioxide gas upside down on a plate of water
constitutes an excellent demonstration of the solubility of gases. If the water
level on the plate is maintained the CO2 will slowly dissolve and the column
of water will rise inside the glass, without quite reaching the ceiling, before an
opposite process sets in: the water level will even more slowly begin to sink
in a process which will take several years. We followed the process for several
months, recording images of the water column with 10 min to 1 h intervals.
The physics of the process is discussed and modeled quantitatively.


Senast uppdaterad 2020-28-02 vid 06:07