651
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]
652
The world's known loudest sound. When the Krakatoa volcano erupted in 1883, the sound of the explosion was so loud that it ruptured the eardrums of people 40 miles away, traveled around the world four times, and was clearly heard from 5,000 km away buff.ly/1rOmT8F
653
There are 7 species of potoos in one genus, Nyctibius, in tropical Central & South America. They are nocturnal insectivores sometimes called poor-me-ones, after their haunting calls and they're often camouflaged to look like part of the stump they perch on buff.ly/3tjzqDV
654
Common Baron caterpillars are camouflage experts like no other They quite literally become one with the leaf
[read more: buff.ly/3UpbFaQ]
[📹: buff.ly/3iCazLw]
655
Are there more grains of sand than stars? On the beach of Hoshizuna-no-hama, Japan, the grains of sand are actually stars
[read more: bit.ly/1okCf1s]
656
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]
657
Japanese fireworks, particularly the bursting cored chrysanthemum fireworks, are said to be the most exquisite and beautiful in the world. They feature layers of differently colored explosives resulting in interesting effects buff.ly/2ZSOrQn [gif: buff.ly/3lipitL]
658
When researchers found this kind of mysterious underwater 'crop circles', they did not know the cause. Then, they proved to be amazing artwork made by pufferfish to attract and win a mate [source and full video: bit.ly/2p5JBLk]
659
The heliosphere is the outermost layer of the Solar System and protects the planets from powerful cosmic events like supernovae. This artist’s visualization shows its possible shape
[read more: buff.ly/3mCBkhn]
[source: buff.ly/3UkkVyn]
660
The giant oceanic manta ray is the largest type of ray in the world. It can grow to a disc size of up to 7 m (23 ft) across with a weight of about 3,000 kg (6,600 lb)
[📹 Shiva Selwyn]
[read more: buff.ly/2pBEk41]
661
The beauty of the moss cells under the microscope
[📹 Adolfo Sánchez-Blanco: buff.ly/3qcEqed]
662
This popular photo by Terri Babers (Jam Press) is an example of how optical illusion mess with your mind. First you see a man running into the snow and then... [source: buff.ly/3Egt8ee]
663
The peculiar design solutions for vehicles and robots by Dan
[TikTok csd79632a0t: buff.ly/3uMCMlO]
664
In this mesmerizing 6-minute time lapse, a single cell divides seemingly endlessly until what was once a yellow blob has become a wriggling, darting salamander tadpole
[read more: buff.ly/2TR1ttg]
[full video: buff.ly/2GYIaeG]
665
The story of 17-year-old Solomon Atimbiri who taught himself robotics and, among the other things, built this toy excavator using scrap materials
[read more: buff.ly/3FKg0jC]
666
Rollor is a cardboard packaging, 100% recyclable and made from a renewable resource. It also has a peculiar geometry in its folding process based on the hexagon and the spiral rollor.com
667
The acraga goa moth caterpillar is also known as crystal or jewell caterpillar. It's covered with gelatinous tubercles protecting it from predators
[read more: buff.ly/3r7HEkM]
[video: buff.ly/3124gsh]
668
In the province of East Java, Indonesia, the gigantic Kawah Ijen volcanic complex stretches over 22 km. But it is more known for its "blue lava", arising from the burning of sulphur released from the earth
[source, read more: buff.ly/3is9yWl]
669
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]
670
For the past decade, Simon Beck has been decorating the Alps with his stunning mathematical drawings, created by running in snowshoes across freshly laid snow
[read more: ow.ly/3bU930outWj]
[video by Golem13: buff.ly/3tluTV8]
twitter.com/Noobie003/stat…
671
Visualisation of birds migrating across Europe, tracked by GPS by 422south.com
[read more: buff.ly/3w64dqx]
672
When marine biologist Roger Hanlon caught this creature on camera, he said he screamed bloody murder. And no wonder. A superb visualization of how chromatophores allow an octopus to blend in with the backdrops
[source, read more: buff.ly/30m3fL9]
673
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]
674
A nunatak is the summit of a mountain that protrudes from an ice field or glacier. A great example was captured in this photo by climber photographer Renan Ozturk in Antarctica [source: buff.ly/32zAmfK] [location: buff.ly/31cjXNH] [more: buff.ly/3JrAChF]
675
The formula to find the number of image formed by two mirrors placed at some angle is
n = (360 / ϑ) - 1
In this case, a "catleidoscope" of 8 cats, is obtained with ϑ = 40°
[source: buff.ly/3VQ6stJ]
[read more: buff.ly/3iFmVCD]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links