Found-Poetry in a Technical Work on Bubbles (1896)

JF Ptak Science Books  Quick Post   (Overall Post 5118) 

 "The water of those wellis sprynge vp with grete bobles."--W. Caxton tr. Myrrour of Worlde ii. xxi. sig. h4   OED

Rummaging again through the eminently-rummagable early years of Nature¹ I found a lovely little article on the physics of bubbles. The language to me seems delightful, and it comes from the first part of a very long opening paragraph of the paper:

"He has studied the behaviour of big bubbles and of little ones,

of bubbles in large and small tubes,

of bubbles of air in a liquid,

and of one liquid in another,

of bubbles in heavy land in light liquids,

of bubbles in liquids of various degrees of viscosity

and with various degrees of surface tension at their surfaces."

• [IMAGE: "THAUMATROPE for showing the formation and oscillation of drops." From C.V. Boys' Soap Bubble and the Forces Which Mold Them, 1896.]

In spite (or because of) the fact that bubbles are serious things, they are wonderfully named and as C.V. Boys points out in his fantastic Soap Bubble and the Forces Which Mold Them (1896), they are as magnificent as they are simple: "I do not suppose that there is any one in this room who has not occasionally blown a common soap-bubble, and while admiring the perfection of its form, and the marvelous brilliancy of its colours, wondered how it is that such a magnificent object can be so easily produced".

Bubbles have a long history in experimental physics² and continue to work their magic today--when I googled this title I came up with only three pages of hits, including the following, which in their own little way beg to be read:

• "Film thickness measurements in liquid–liquid slug flow "
• "Effects of Bubbles on the Hydraulic Conductivity of Porous Materials "
• "Bubble deformations and segmented flows in corrugated microchannels at large capillary numbers "
• "Bubble transport through constricted capillary tubes with application to resin transfer molding"
• "Transport of bubbles in square microchannels"
• "Step-Wise Velocity of an Air Bubble Rising in a Vertical Tube Filled with a Liquid Dispersion of Nanoparticles"

From the 1894 article:

"EVERY student of physics has observed the motion of bubbles in tubes. Which of them has not used a big bubble to show the little ones their duty in clearing out the air when filling a barometer tube? Who has not spent his time and patience in whisking a spirit thermometer to drive a bubble out of the column? Mr. Trouton has recently communicated to the Royal Society the result of some researches on this subject. He has studied the behaviour of big bubbles and of little ones, of bubbles in large and small tubes, of bubbles of air in a liquid, and of one liquid in another, of bubbles in heavy land in light liquids, of bubbles in liquids of various degrees of viscosity and with various degrees of surface tension at their surfaces. From this enumeration it is evident that the number of different magnitudes involved is very great, and at the start it seemed almost hopeless to disentangle the effects due to each. The first matter to observe was that, as in other cases of fluid motion, two cases must be distinguished. These are the cases of slow motion and of quick motion. When the motion is slow the viscosity of the liquid causes the flow to be very simple. It entirely stops all whirling and swirling, such as is seen in the water behind a boat. When the motion is quick, on the other hand, the flow is very complicated. Whirls and swirls are set up, and the resistance is increased, owing to the increased energy that has to be communicated to the whirling and swirling liquid for each centimetre that the bubble moves. The slow kind may be described as viscous flow, and the quick as turbulent flow. The most interesting point observed in connection with the turbulent flow was that it was sometimes possible to increase the rate of flow by increasing the viscosity..."

Notes:

1. "On the Motion of Bubbles in Tubes", in Nature, a Weekly Illustrated Journal of Science, 8 February 1894 (vol 49 no. 1267)/ I should point out that Nature back then was almost entirely readable by almost anyone—nowadays of course it is a vastly different story; I stopped my subscription a while back when I found out that I wasn't understanding even the titles of some of the papers....

2. "I have freely made use of the published work of many distinguished men, among whom I may mention Savart, Plateau, Clerk Maxwell, Sir William Thomson, Lord Rayleigh, Mr. Chichester Bell, and Prof. Rücker. The experiments have mostly been described by them, some have been taken from journals, and I have devised or arranged a few. I am also indebted to Prof. Rücker for the use of various pieces of apparatus which had been prepared for his lectures."--C.V. Boys, Soap Bubble and the Forces Which Mold, 1896.

"Experiment for showing by intermittent light the apparently stationary drops into which a fountain is broken up by the action of a musical sound."--from the Boys book.