1651
These cups are made of linear mirrors with 24 sides: when put on the saucer the anamorphic design reveals a hidden image. Bonus: some of them also use a moiré effect, to give an even more impressive, animated result buff.ly/3RClrWt
1652
The Fulton surface-to-air recovery system is a system used by the CIA, United States Air Force and United States Navy for retrieving persons on the ground using aircraft without landing
[read more: buff.ly/2ArUJuy]
[video: buff.ly/3OT1YAq]
1653
Orcas are so smart that they swim sideways while hunting seals, in order to hide their dorsal fins: this is a pod of orcas sneakily swimming along a beach in Patagonia [source, full video by George R. Gaitanos: ow.ly/qVGP30no1Zt]
1654
«Look again at that dot»
Through the brilliance of Saturn’s rings, @CassiniSaturn caught a glimpse of a far-away planet and its moon. At a distance of just under 900 million miles, Earth shines bright among the many stars in the sky
[source: buff.ly/3GfJzLl]
1655
The story of the young arctic fox that walked across the ice from Norway's Svalbard islands to northern Canada in an epic journey, covering 3,506 km (2,176 miles) in just 76 days
[read more: buff.ly/2FGW6YD]
1656
While they seem to show affection to one another, these two monitor lizards are actually fighting. They do it by rearing up on their hind legs & trying to overpower their rival, generally as competition for food, territory or a mate buff.ly/3BXo3cz
1657
How Bryan Snyder captured an alligator lizard fighting back from inside the belly of a kingsnake
[source, read more: bit.ly/2wdYP4N]
1658
The story of Werner Forssmann, the man who put himself under local anesthesia and inserted a catheter into a vein of his arm and up into his heart without knowing the consequences. He devised the cardiac catheterization and won the Nobel Prize [read more: buff.ly/3qVzaf3]
1659
The Parrot Toadstool is a small mushroom, with a convex to umbonate cap 1–3 centimetres (⅓–1 in) in diameter, which is green when young and later yellowish or even pinkish ting [read more: ow.ly/EbYA50AJSHi]
1660
This is a close up of a mushroom and those drops are not dew, they are created by guttation.
They are rotating because, believe it or not, the mushroom has its own small thermal currents
[📹 Geertje Geertsma]
[read more: buff.ly/33YnvPZ]
1661
The Large Hadron Collider is the world’s largest, most powerful particle accelerator: in a way it's the world's largest single machine. It consists of a 27-km ring excavated between the lake of Geneva and the Jura mountain range at an average depth of 100 m. Let's see some facts
1662
Elevation and depth of
- Great Lakes
- Lake Baikal
- Lake Titicaca
[source: buff.ly/3WPM1OE]
[Great Lakes only: ow.ly/v5O430nURHW]
1663
The Aurora Tree: a visual coincidence between the dark branches of a nearby tree and bright glow of a distant aurora, captured by Alyn Wallace in 2017 [source: buff.ly/2mjFezs]
1664
Agate is a popular gemstone that’s a banded form of finely-grained quartz. One variation of the stone features tiny, abstract scenes that resemble mountains, rivers, and skies. This has earned them the nickname “landscape agates” [source, read more: ow.ly/oUoc50wO0xx]
1665
And a classic one to wish you all a Meʳʳʸ = x - mas
1666
Auto-targeting fire sprinkler systems are intelligent fire extinguishing equipments used in interior large spaces [more: buff.ly/2TzaR6R] [source of the gif: buff.ly/3bZMaXe]
1667
When hunting, a thresher shark's tail moves so quickly that it lowers the pressure in front of it, causing the water to boil. Tail slaps can lash out at up to 80km/h and some fish is hit directly in the attacks, while others are killed by the pressure wave ow.ly/xBfo30nnpaP
1668
An average wastewater treatment plant serving 400,000 residents will discharge up to 2,000,000 microplastic particles a day into the environment. Now, researchers found that microplastics can become 'hubs' for antibiotic-resistant bacteria and pathogens buff.ly/3twa3iy
1669
Living sand dollars are covered by a skin of velvet-textured spines with very small hairs (cilia). Coordinated movements of the spines enable sand dollars to move across the seabed
[read more: buff.ly/3h4cuZa]
[📹: buff.ly/3BcJ8yt]
1670
This ball by Nicholas Perillo made up of hexagon tiles, with 486 stepper motors, 86,000 LEDs and a 5 channel granular synth engine, combines the best of blinky LEDs and animatronics into one amorphic ball
[read more: buff.ly/3Lxkexd]
1671
Born #Today in 1919, Maurice Hilleman developed over 40 vaccines, among which measles, mumps, hepatitis, chickenpox, meningitis, pneumonia: an unparalleled record of productivity that saved more lives than any other scientist of the 20th century buff.ly/2o9ChmY
1672
One of the most convincing and attention attracting opening to a math lesson
—Thomas Garrity Williams, «On mathematical maturity»
[full video: buff.ly/3EIch6N]
1673
A blue iceberg is visible after the ice from above the water melts, causing the smooth portion of ice from below the water to overturn. The rare blue ice is formed from the compression of pure snow ice buff.ly/2JKhhfB [photo by Robert B. Dunbar: buff.ly/32UZFmK]
1674
During the winter months, as dusk arrives, starlings set off for their communal roost in one of the most staggering natural spectacles of all. The murmurations take on incredible shapes [video by Richard Sykes + read more: buff.ly/3jS2cJz-]
1675
Born 203 years ago #Today, Léon Foucault was a physicist and he's best known for proving the Earth's rotation with his pendulum, making the discovery at 2 am in the cellar he shared with his mother buff.ly/2MEJlUM
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links