551
Devil's Tower is likely an igneous intrusion, formed underground from molten rock that pushed up into sedimentary rock and became solid ~50 million years ago [read more: buff.ly/3bODCow-] [clip by IG's Quin Schrock: buff.ly/2ZYljKS-]
552
In this video on NightHawkInLight, Ben demonstrates how a "Lubor’s lens" works. This is a type of Fresnel lens that takes the light coming into it from the back at obtuse angles and projects it forward in the front of the lens
[video: buff.ly/3lBAxgO]
553
Japanese monkeys learned to wash sweet potatoes in fresh water. After some generations they started to carry the potatoes to the sea. Their motivation might have been to get the salty taste: a first strong evidence of cultural behavior in nonhuman animals buff.ly/3yqORxI
554
Part of the watermelon farming operations include keeping them cooled off as they go from harvest to shipment. This farmer took advantage of their buoyancy to both transport them & keep their temperature controlled
[📹 al._khamid: buff.ly/3FuF3IB]
555
How Earth will look in 250 million years according to plate tectonics theory [video: buff.ly/2I3KQ7N-]
556
While at Cat Lake, British Columbia, XYSM, a DJ from Vancouver realized that every time he played a loud note on his guitar, the insects populating the lake's water, reacted to the sound
[read more: buff.ly/3vN5LHb]
[📹: buff.ly/3BR4liy]
557
James Harrison is a blood donor whose unusual plasma composition has been used to make a treatment for Rhesus disease. He made 1173 donations throughout his lifetime, which are estimated to have saved over 2.5 million unborn babies from the condition ow.ly/ssIl30oabuI
558
Manufacturing ropes is an old, north German activity that is still practiced today. Tugboats use this kind of huge ropes to pull large ships. This is where traditional handwork merge with industrial production
[full video (DE), NDR Doku: buff.ly/3dKBRtp]
559
Crows and corvids in general are among the most playful animals.
This is a snowboarding one.
[read more: buff.ly/2N2PkPn]
[📹 MadtimeCA: buff.ly/3Q1VdLl
560
A remarkable photo taken by Rick Geiss from Gulf Shores, Alabama in July 2016, showing a majestic cumulus congestus cloud with a microburst pouring a rain shaft over the ocean
[source, read more: buff.ly/2tiJkIC]
561
An F-22 Raptor doing a Power Loop: a maneuver utilizing the full capabilities of the thrust vectoring technology to rotate the aircraft through the air while remaining stationary within a single point in the sky
[📹 USAF F-22 Raptor Demonstration Team]
562
The air entering a peregrine falcon's nose during its high speed dives (320 km/h) would cause its lungs to explode, but bony tubercles in its nares safely regulate the passage of air. Engineers solved the air intake in jet engines in a similar way: buff.ly/3GbfyKJ
563
The Great Pyramid of Giza used to look very different from the way it does now. When it was first completed, its external walls of limestone were sanded smooth to shine bright white and it had a golden cap
[video: buff.ly/2A9060G]
[read more: buff.ly/334VWDg]
564
There's a place in Morocco where you can find goats perching on these trees' branches. Yes, goats on trees
[read more: bit.ly/1D4GlVG]
[📹 Photo Workshop Adventures: buff.ly/3unuvlV]
565
This video captured by Jess Wandering in 2019 on the Alpstein massif in Switzerland, shows the difference in weather between two sides of a mountain due to the orographic effect buff.ly/2AYH6pJ [source: buff.ly/2OE2G6p] [full video: buff.ly/2ODPOx7]
566
How Oklahoma farmer Carl Barnes uncovered a brilliant strain of corn now called Glass Gem Corn
[read more: bit.ly/2eVoqqR]
567
The story of the tiger that in 1997 was wounded by a poacher who also stole part of its kill: the tiger found the poacher's cabin, destroyed his belongings, waited at least half a day for him to return, then killed and ate him
[read more: buff.ly/2IhMG4w]
568
This video compares the size of tsunamis from the smallest wave to the biggest tsunami
[📹 HD, Red Side: buff.ly/3R8UrNA]
569
Warthogs living in Uganda have learned to rid themselves of annoying ticks by seeking out the grooming services of some accommodating neighbors: a group of mongooses looking for snacks
[full video, BBC: ow.ly/LdK250l2h4F]
570
A candle snuffer is a clever and extremely simple mechanical device that can automatically extinguish a candle in case one forgets to blow it out
[source: buff.ly/3hqGPAR]
[this specific model: buff.ly/3DWwowr]
twitter.com/NaoCasanova/st…
571
Giant sequoia specimens are the most massive individual trees in the world. Record trees have been measured at 94.8 m tall & 9 m in diameter. Outdoor adventure photographer Quin Schrock captured the scale vs a human [source: buff.ly/3GNmT3s]
572
The kind of car crash you will never be able to repeat [source: buff.ly/2u9Gp8P]
573
This lock can be opened with 1 lock: no matter which one.
It's a real life example of a brunnian link, a nontrivial link that becomes a set of trivial unlinked circles if any one component is removed
[source: buff.ly/3gRnwkm]
[read more: buff.ly/3OPptKH]
574
The Baatara gorge sinkhole in Lebanon is a triple waterfall that drops 255 meters (837 ft) into the Baatara Pothole, a cave of Jurassic limestone [read more: buff.ly/2JR9GsR]
575
Tribolonotus gracilis, commonly known as the red-eyed crocodile skink is endemic to New Guinea, where it lives in a tropical rainforest habitat. It was first described by Nelly de Rooij in 1909 [read more: buff.ly/3RxaMeZ]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links