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33 days of wound healing time lapse
This popular clip by Kolo/Time Lapse reveals the surprising automatism of the human body healing process.
[source, HD: buff.ly/3QIOQO0]
227
The Stepping-Feet Illusion features two rectangles apparently moving like a pair of stepping feet, but they're actually moving at the same constant speed.
The illusion is broken when the striped texture is removed.
[source, read more: buff.ly/3eSzghH]
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This was published 110 years ago Today
[read more, fact check by Snopes.com: buff.ly/2w85bUR]
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Hyalite acquires a property of fluorescence due to the inclusion of trace amounts of contaminating uranium in the silica structure of the opal itself, and under ultraviolet light uranium will glow very brightly [source and more: buff.ly/2ZO955x]
230
When the rate of rotation matches the rate of the smartphone camera, twelve animated gears appear to mesh and turn in this phonotrope from apyrodesign
[source: buff.ly/3bWWh5d]
[apyrodesign: buff.ly/3dwX5yp]
231
German photographer Nick Beyersdorf captured this multi-colored contrail while a Qatar Airways plane flew over Bamberg, Germany [read more, more photos: buff.ly/3b9HQqy]
232
Omphalotus nidiformis, ghost fungus, is a gilled basidiomycete mushroom most notable for its bioluminescent properties. This clip by Rob Parsons captures its soft green light [source: buff.ly/3EkuoN9] [author's IG: buff.ly/3miociq]
233
Glasswing butterflies use mostly transparent wings to hide in plain sight. This is how they make their wings transparent: buff.ly/31cIXnT
[source Methona confusa from YT's InsecthausTV: buff.ly/3ECKhij]
234
Artist Insane 51 created an art called "Double Exposure 3D" which uses 3D glasses to show different aspect of the same mural painting. This one was made in Bristol, UK [source, more artworks: buff.ly/3QKLXMm]
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Combining off-the-shelf components with basic 3D-printed parts, the Wheelbot is a symmetric reaction wheel unicycle that can jump onto its wheels from any initial position
[source, read more: buff.ly/3C5o6mM]
236
This is a 3D HREM visualization by Richard Behringer of a human embryo in its fifth week
It has a fishlike appearance because humans & fish share some DNA & a common ancestor, not because we go though a “fish stage”
[read more: buff.ly/3bV5cV0]
237
Unlike other mammals, camels' red blood cells are oval. This makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600kg camel can drink 200 L of water in 3 minutes buff.ly/31jk3QO [gif: buff.ly/2E9lDMB]
238
The 2011 Tōhoku earthquake triggered a tsunami wave that reached heights of up to 40.5 meters. It traveled at 700 km/h (435 mph) and up to 10 km (6 mi) inland. This video shows its devastating speed and power [read more: buff.ly/2vKev0C]
239
Yutong demonstrates 5G-based autonomous bus operations in Zhengzhou. China. This is an intelligent bus terminal where buses park, charge, move and depart with no human operation [read more: buff.ly/3w4eswH]
240
99.9999999% of all the matter we know, is empty space. If we lost all the dead space inside our atoms, we would each be able to fit into a particle of dust, and the entire human species would fit into the volume of a sugar cube [source: buff.ly/34qdw6x]
241
Osmium is the densest naturally occurring element, with a density of 22.59 g/cm³, denser than lead: 1 kg is approximately a cube 4 x 4 x 3 cm [source: buff.ly/2I1OAq1]
242
Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter (which may include crystals) are secluded
This clip by TikTok's mooneyfinemineral shows how you open an enhydro one: buff.ly/3AkxJfP
twitter.com/crazyfunnystuf…
243
A tussle for supremacy between left and right halves of your brain is why yellow dots disappear, staring at the green one [source, read more: bit.ly/2sgU0ZK]
244
Photographer Peter Maier captured this jaw-dropping timelapse of a cloudburst over Lake Millstatt in Carinthia, Austria [source, full video, HD: buff.ly/2Mv5n7G]
245
«Fun to imagine» is a 1983 BBC TV series originally shot on 16mm film at Richard Feynman's house in Altadena, California. He explains that trees actually come from the air and why the heat from a fire is in fact the heat of the Sun: buff.ly/3SQ0uZm
246
Created by morn1415 in 2016, this video about the true scale of the universe had 41 million views on YouTube and it's still a great clip to watch.
[full video, HD: buff.ly/3zWjDjt]
247
Simas Snežko built a mechanical model of a car out of wood. And it's not just some pistons moving up and down in a drilled-out block of wood—the model is a V8 with a working transmission, a differential and a clutch [read more: buff.ly/3sI66aE]
248
If you're old enough, you will recognize this sounds and appreciate the spectrogram of a dial up modem handshake. The full video's caption reports a verbal translation/breakdown of the process
[Full video, Scotty H: buff.ly/3zVFdom]
twitter.com/tatertotsmcgee…
249
This mussel waves a lure that looks like a small fish. Bigger fish try to eat the lure & a cloud of larvae is expelled, attaching to the fish gills so that they can go upriver instead of downstream [source, read more: buff.ly/3bipggb] [Video by Ryan Haggerty]
250
That time astronaut Scott Kelly played liquid ping pong in space: he used two paddles with hydrophobic, or water repellant, features to pass a sphere of water back and forth [full video: buff.ly/2XSL4M3]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links