Talk:Soda straw
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Internal Diameter of the Soda Straw Cave Formation edit
Has anyone measured the internal diameter of Soda Straws to compare or to establish the diameter of a water drop in our current surface gravity ? Has anyone measured prehistoric Soda Straw internal diameters to see if they remain the same diameter, or if they were larger millions of years ago ? 63.225.17.34 (talk) 19:29, 3 April 2018 (UTC)
Yes - check out the paper just published in Cave and Karst Science. It has a lot of info on straw diameters, mass per unit length, solution drop diameter and mass etc. [1] IntoCaves (talk) 11:37, 17 May 2021 (UTC)
References
- ^ Smith, G.K., (2021). "Comparison of calthemite and speleothem straw stalactites, and environmental conditions influencing straw diameter", Cave and Karst Science, Transactions of the British Cave Research Association, Vol.48(1), 3–11
Using the International Space Station to GROW Cave Soda Straws of different diameters edit
A series of calibrated spinning discs could be used to let Cave Soda Straws form in different Gravity Environments. The slower the disc spins, the lower the simulated gravity environment, and the corresponding greater the diameter of Soda Straw formation. This could be used to determine the strength of the water tension where it attaches to the bottom ring of the soda straw crystals. This could be simulated for gravity greater than 1.0 G on the Earth's surface, but, for gravity less than 1.0 g, the simulation requires a stable zero G environment, and the spinning discs will provide reference in 0.10 g increments or less, perhaps 0.01 g increments. Alternatively, discs of different diameter could all spin at the same slow rate, on a single shaft in a protected environment on the International Space Station. Smaller discs will produce larger Soda Straws, and bigger discs will produce smaller diameter Soda Straws. This will then become a reference if, and when we discover Cave Soda Straws on other Planets, Dwarf Planets, or Moons. Just measure the diameter, check the chart, and get the planets gravity to withing a fraction of our gravity. MWC, Golden, Colorado. 98.245.219.152 (talk) 03:28, 18 February 2023 (UTC)