Coffee preparation can be made more efficient by grinding the beans with a few drops of water 1. During grinding, coffee particles accumulate electric charge. This can make the particles clump ...
The fracturing and friction of coffee beans during grinding generates electricity that causes coffee particles to clump together and stick to the grinder. Researchers report that coffee beans with ...
PHILADELPHIA — A team of University of Pennsylvania physicists has shown how to disrupt the "coffee ring effect" — the ring-shaped stain of particles leftover after coffee drops evaporate — by ...
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