Posted on 05/09/2019 11:07:16 AM PDT by BenLurkin
One area of interest is Rayleigh-Taylor instability, which occurs between materials of different densities when the density and pressure gradients are in opposite directions creating an unstable stratification.
Not much is known about the evolution of the instability in accelerated solids. The short time scales and large measurement uncertainties of accelerated solids make investigating this kind of material very challenging.
Hellman's Real Mayonnaise was poured into a Plexiglass container. Different wave-like perturbations were formed on the mayonnaise and the sample was then accelerated on a rotating wheel experiment. The growth of the material was tracked using a high-speed camera (500 fps). An image processing algorithm, written in Matlab, was then applied to compute various parameters associated with the instability. For the effect of amplitude, the initial conditions were ranged from w/60 to w/10 while the wavelength was varied from w/4 to w to study the effect of wavelength ("w" represents the size of the width of the container). Experimental growth rates for various wavelength and amplitude combinations were then compared to existing analytical models for such flows.
In inertial confinement experiments, the gas (hydrogen isotopes, like in magnetic fusion) is frozen inside pea-sized metal pellets. The pellets are placed in a chamber and then hit with high-powered lasers that compress the gas and heat it up to a few million Kelvin—about 400 million degrees Fahrenheit—creating the conditions for fusion.
The massive transfer of heat, which happens in nanoseconds, melts the metal. Under massive compression, the gas inside wants to burst out, causing an unwelcome outcome: The capsule explodes before fusion can be reached. One way to understand this dynamic, explains Banerjee, is to imagine a balloon being squeezed.
(Excerpt) Read more at phys.org ...
“Behold the mayo”
Headline writer should be zapped with an alpha particle for that one.
Didn’t read anything that would prevent me eating BLTs.
What I got out of the article is that we will be able to use mayo to create either fusion weapons or civil fusion electrical power. Will the Brady Foundation now try to ban mayo as a weapon of mass destruction? Just askin'.
I believe they were worried about it happening during nuclear detonations.
TTIWWOV: This thread is worthless without video.
I want to see the mayo explode at 500 fps! ;-)
Thanks for saving me time and brain cells:
‘What I got out of the article is that we will be able to use mayo to create either fusion weapons or civil fusion electrical power. Will the Brady Foundation now try to ban mayo as a weapon of mass destruction? Just askin’.’
But mayonnaise is an emulsified combination of egg yolks and oil. Not what I would first call to mind when discussing elastic-plastic material, although an emulsified sauce is relatively unstable. This is why I don’t get government grants.
That’s looks familiar. Seem to recall it was messy stuff.
(Probably toxic too, I bet)
Hellman's Mayonnaise is thixotropic, as is latex paint, which exhibits spatter mist caused by the breaking of elastically fluid strings formed by separation of the roll from the coated surface. The same phenomenon is seen in the behavior of the adhesive of ScotchR tape when it is stripped from a rigid substrate.
Odd, but true.
Laser fusion was attempted a number of years ago by employing hydrogen-filled tiny millimeter-sized glass spheres dropped one by one into the center of, and bombarded at, the juncture of the beams of peripheral lasers, the beams impinging normal to the sphere's circumference.
I wonder why they went to a metallic containment instead? (Perhaps because the glass is elastic only up to the point of fracture, whereas a metal suffers significant integrity in plastic elongation after the elastic limit is reached?)
Skip the messy mayo and the expensive lasers.
Some types of tape and a bit of luck will produce triboluminescence, a pretty blue light.
Just stick them together and quickly pull them apart, in the dark.
Very low budget and ultra-low power output, but you can do it at home.
Five days ago I had a whole sink full of that.
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Sometimes in these threads MY limit gets stretched quite a bit!
It has even SNAPPED before!!
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