1701
Smoke usually doesn't behave like a liquid, because its particles tend to rise, carried by convection currents. But there are conditions in which smoke can drip like water
[learn when: buff.ly/2XC70eo]
[source of the clip: buff.ly/3m2d3SP]
1702
The cigar box juggling is so rapid here, that the illusion of 3 hands is quite strong
[source: Kris Kremo, Generation Game Christmas Special, 1993, buff.ly/2GXLzGa]
1703
Parrots exhibit a high level of social intelligence and cooperativeness. Using token exchanges for nuts, the experiment showed they readily help others, even when there is no immediate opportunity for reciprocation
[read more: buff.ly/3TVpGwC]
1704
Seals usually attack their prey by bringing it to the surface and slamming it against a hard surface. So, being slapped by a seal with an octopus while kayaking does not necessarily represent adverse karma
[📹 Taiyo Masuda: buff.ly/3vAbwr9]
1705
Volcom teamed up with Stab to install a 30-meter floating docking anchored in the middle of an A-frame peak in Bali, Indonesia to demonstrate how surfers can easily run and hang loose on perfect waves rather than paddling. It's called "The Dock" [video: buff.ly/2l7GKBD]
1706
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. This is a 3D printed model of 7-cylinder radial engine [source by Adam's Lab: buff.ly/2A9Z4oF]
1707
This photo by Kévin Pagès shows an Icelandic highway road passing through the mossy lava rock terrain [source, author's IG account: buff.ly/3FTbBcr] [read more: buff.ly/3xDBxGk]
1708
A seagull riding another seagull. What appears to be a very unusual view can find an explanation in the way male seagulls signal they are ready to mate.
[read more: buff.ly/3Q865ri]
[📹: buff.ly/3cIp5it]
1709
It’s the colouration that makes the painted bat (Kerivoula picta) remarkable. Its body is covered in downy orange fur, while its wings are striped in highly-contrasting black and orange; a strikingly beautiful combination [source, full video, read more: buff.ly/3FlsaNT]
1710
MoMA recently released a short film from 1902 of a German suspended railway called the Wuppertal Schwebebahn, shot in 68 mm. It shows an unusual drone-like view of a German city at the beginning of the 20th century
[full video: buff.ly/3fOh6fn]
1711
Single-shot compressed ultrafast photography at one hundred billion frames per second allow to capture light bouncing in a mirror [full paper: buff.ly/2jl5Goy]
1712
One of the most curious properties of dragonflies is probably that their wings kill bacteria on contact. They do it by ripping apart the bacteria's cell membranes with sharp nanopillars as they move across the surface of the wing [read more: ow.ly/6KZN50wzlKD]
1713
The Río Tinto is a river in southwestern Spain which has a unique red and orange colour derived from its chemical makeup that is extremely acidic (pH 2) and with very high levels of iron and heavy metals
[read more: buff.ly/3kHBVMC]
1714
The spider-tailed horned viper is a superb mimic. Its tail resembles a spider and it's used as a lure to attract insectivorous birds to within striking range.
[read more: buff.ly/3qi6FrS]
[📹 BB Earth]
1715
This is what you obtain plotting the permutation of 7 items.
[5040 permutations: buff.ly/3ZbOapc]
[Lars Wander's site: larswander.com]
1716
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
1717
Mount Erebus is the second-highest volcano in Antarctica and the southernmost active volcano on Earth. This is what the ice towers that form around its steaming vents look like in a great picture by photographer George Steinmetz [read more: buff.ly/2ETU4RJ]
1718
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]
1719
The life cycle of a leaf
[video: buff.ly/2AygXv2]
[📷 Rob Herr: buff.ly/2Ty4vlQ]
1720
The Black Diamond apple and the White Ghost apple are two breeds of the fruit, the former being cultivated in the Tibetan region of Nyingchi, the latter being developed by Zaiger genetics.
[read more: buff.ly/3JGGDrd, buff.ly/3A17Ykz]
1721
Flying squid has been observed to engage in behaviors that prolong the time it remains in the air, making it more akin to actual flight than just gliding. This photo by @whale_nerd is one beautiful photographic evidence
[read more: buff.ly/3zYrwEJ]
1722
An Archimedes' screw is a machine used for transferring water from a low-lying body of water into irrigation ditches. Greek philosopher Archimedes first described it around 234 BCE [source: buff.ly/3pMIFOG-] [read more: buff.ly/3GuFvVA-]
1723
This particular moment when a baby alligator climbed on its mother's head, was captured at Brazos Bend State Park, Texas by photographer Clayton Bownds [souce, read more: buff.ly/2wvLSrI]
1724
The story of the baby cow that escaped the slaughterhouse and was raised by a deer family in a snowy forest
[full story: buff.ly/2yPWumI]
1725
An excellent example of how air pumped into sand, turns sand into a liquid-like substance
[full video with explanation by Mark Rober: buff.ly/2IJ6QUM]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links