"Tim+" wrote in message
...
Ian

wrote:
On 2020-07-21, Joshua Snow wrote:


"Andy Burns" wrote in message
...
newshound wrote:

https://www.theguardian.com/science/...e_iOSApp_Other

The glass things look like brewing airlocks ...

Dunno, hard to see how they attach to whats used
for the brewing or why the top one is so convoluted.


https://en.wikipedia.org/wiki/Geissler_tube


I dont think he was referring to those (which are named on the web page).
Its the other weird bit of glassware that is really puzzling.

Correct, I was talking about the first pair of glass things which
have curled glass in the center, very curled with the first one.