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#physics

78 posts60 participants5 posts today

The passage of time is measured pretty much the same across much of the world, counting the seconds between “then” and “now.” But what if “then” and “now” can’t always be anticipated? @ScienceAlert has more on an entirely new way to measure time:

flip.it/X.9wY4

ScienceAlert · Physicists Found an Entirely New Way to Measure TimeDetermining the passage of time in our world of ticking clocks and oscillating pendulums is a simple case of counting the seconds between 'then' and 'now'.

"Universe may revolve once every 500 billion years — and that could solve a problem that threatened to break cosmology" by @LiveScience - A renewed but not entirely new hypothesis suggests the difference in observed rates of expansion of the universe may be explained by slow but nonzero rotational velocity of the universe. Recent improvements in telescopes offer vastly more data for researchers to explore viability of the concept. livescience.com/space/cosmolog #physics #astronomy #science

Live Science · Universe may revolve once every 500 billion years — and that could solve a problem that threatened to break cosmologyBy Elana Spivack

“Dispersion”

In “Dispersion,” particles spread under the influence of an unseen fluid. Like Roman de Giuli’s work, filmmaker Susi Sie creates macro images that look like ice floes, deserts, and river deltas viewed from above. This similarity of patterns at both large and small scales is a specialty of fluid physics. Just as artists use it to mimic larger flows, scientists use it to study planet-scale problems in the lab. (Video and image credit: S. Sie et al.)