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305 posts tagged physics
Twenty seconds of a measured random walk trajectory for a micrometer-sized ellipsoid undergoing Brownian motion in water. The ellipsoid orientation, labeled with rainbow colors, illustrates the coupling of orientation and displacement and shows clearly that the ellipsoid diffuses faster along its long axis compared to its short axis.
Credit&source: University of Pennsylvania (Penn News)
In this micrograph, the spherical Ag droplet (about 5 microns in diameter) is almost detached from the SiO2 base, yet it is in the clothing of a thin SiO2 layer.
Credit: Prof. Dr. Z. X. Cao
Source: Physics is Fun, Physics is Art; Prof. Dr. Ming-Wei Wu, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China.
Wind map of USA. March 27, 2012 5:00 pm, top speed: 30.1 mph, average: 11.7 mph, (Click to see the animated map, awesome)
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Nice rainbow (or a chromatic dispersion, if you want) over Cuatro Torres Business Area (CTBA), Madrid, Spain.
Photo taken from my home this early evening, and smoothly edited by myself.
You can also slightly see the double rainbow effect (upper left corner).
Very well done, from the Planck length to whole (known) of Universe (Click to enjoy it).
Source: The Scale of the Universe - Interactive, Astronomy Picture of the Day.
Flash Animation Credit & Copyright: Cary & Michael Huang.
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“In science, “fact” can only mean “confirmed to such a degree that it would be perverse to withhold provisional assent.” I suppose that apples might start to rise tomorrow, but the possibility does not merit equal time in physics classrooms.”
