With regard to the prior post about increasing
sensitivity by a 2milliamp current, this correlates
quite nicely with radionic sensitivity;
http://www.aip.org/enews/physnews/1999/split/pnu409-1.htm
WHAT MAKES OBJECTS SO STICKY?
Removing one's finger from a sticky surface often
requires an unexpectedly large amount of work,
sometimes up to 10,000 times more than simple
theoretical considerations would suggest.
The forces primarily involved in making objects sticky
are the weak attractions between molecules known as
van der Waals forces, but their effect is enhanced by
mechanisms whose exact nature and role have remained a
mystery. Moreover, in controlled experiments where a
metallic probe is removed from a sticky polymer at a
constant rate, no one has explained the observed
sequence of forces, which quickly reach a peak value,
then remain roughly constant before dropping to zero.
Now, researchers in France (Cyprien Gay and Ludwik
Leibler, CRNS-Elf Atochem, cgay@pobox.com,
011-33-147-59-1494) suggest that a combination of
surface roughness and air suction effects is what
makes things sticky.
In their theory, air bubbles are trapped as the rough,
wavy surfaces of the metallic probe and of the
deformable polymer touch each other. Pulling apart the
surfaces causes the bubbles to change shape.
At first this creates a suction-cup effect which makes
it harder to separate the surfaces (corresponding to
the force peak), until air rushes in. Then, isolated
bubbles connect and evolve into a network of contact
points between the probe and polymer.
Fractures that propagate through this network reduce
the force required to separate the surfaces, and keep
it at a plateau before the probe is finally removed,
dropping the force to zero.
Developing a more sophisticated understanding of
stickiness will help researchers better design
adhesives, coatings and paints. (Gay and Leibler,
Physical Review Letters, 1 February 1999.)
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