651
Sanderlings largely feed on isopods & mole crabs. They show a curious dynamic behavior, moving up and down along the shore according to waves & tides in order to catch their prey
[read more: buff.ly/3gnXIbF]
[source: buff.ly/35OQmfk]
652
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
653
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]
654
There is more than a way to inflate a plastic bag and this clip explains how to do it with a *single breath* using science and the Bernoulli's principle
[source, Wolf_science: buff.ly/3kRMRJl]
655
Some McDonald's in Japan have installed sink systems that come with a slot that "sanitizes" your smartphone. It's a system called WOSH developed by Japanese company WOTA.
[read more: buff.ly/3FAyvZl]
656
Richard Feynman's Lectures on Physics are timeless: their main strength is in demonstrating how to reason about physics. You may not know all the lectures are completely online:
Volume 1: feynmanlectures.caltech.edu/I_toc.html
Volume 2: feynmanlectures.caltech.edu/II_toc.html
Volume 3: feynmanlectures.caltech.edu/III_toc.html
657
The Stoos Bahn is the steepest funicular railway in the world and is paraded as a masterpiece of Swiss engineering: it hauls passengers from the valley floor up a near-vertical 110% gradient
[full video by National Geographic: buff.ly/3kwCcnA]
658
Military pilots &and astronauts must endure tremendous amounts of g-forces during takeoff & maneuvers. They're trained for this type of pressure, and one test is the AGSM, anti-g straining maneuver. Watch this series of clips showing the effects on pilots: buff.ly/3Ivvg4g
659
A bird's eye view of a high-speed train station in China
[📹 buff.ly/3RaKBum]
660
This clip shows a bobcat jumping over a river in super slow motion
[📹 BBC Planet Earth II: buff.ly/3q4ghV4]
twitter.com/manishamt/stat…
661
Hitting and launching molten iron into the air with a shovel is a very dangerous activity and must not be tried anywhere, but (with the proper protection equipment) it can produce surprising beauty
[source, SUSHI RAMEN【Riku】: buff.ly/3KcE5zz]
662
Preikestolen (English: «Pulpit Rock'») is a tourist attraction in Rogaland county, Norway. Preikestolen is a steep cliff which rises 604 meters (1,982 ft) above the Lysefjorden
[read more: ow.ly/mPPE50ukEN3]
[📹 buff.ly/3iczpBX]
663
From the hand's palm, clockwise:
- Idolomantis diabolica
- Phyllocrania paradoxa
- Deroplatys lobata
- Theopropus cf. elegans
- Aethalochroa insignis
[📷 Wuttikrai K.: buff.ly/3ViEF4A]
664
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]
665
2D Artist Vaskange uses Endless Paper app and Apple Pencil, powered by Fractile, a vector rendering engine, creating illustrations that can be infinitely zoomed in
[Instagram: buff.ly/3RHAlKt]
666
A massive flock of starlings descended near the city of Patras, Greece on Wednesday and the result was a kind of a tsunami of birds
[source, read more: buff.ly/3B9DH28]
667
Vacuum excavations overcome damage to buried pipes and cables. As well as guaranteeing consistently high suction performance and low maintenance, putting a stop to high cost and inefficient manual excavation [source, bforceAU: buff.ly/2TYt6Vj]
668
This is what eye rubbing looks like in MRI.
keratoconus (and possibly other ocular conditions) is caused by excessive eye rubbing
[full video, Damien Gatinel: buff.ly/31xl0Yk]
669
Norwegian nature photographer Thomas Mørch knows how to get the perfect moment: this backlit bird's plumage captured while in flight is simply awesome [source: ow.ly/XlDr30ncdA6]
670
Wildebeest are very strong and can inflict considerable injury even to a lion, especially jumping when running at maximum speed of up to 80 km/h (50 mph)
[read more: buff.ly/3qlwJma]
[📹 Lauren Hughey: buff.ly/3AZDEpI]
671
This is what a spacecraft's wall looks like after an impact with a space debris of ~1.2 cm Ø at a speed of 21,760 km/h
[source, read more: buff.ly/2oIi8U8]
672
The nilgai or blue bull is the largest Asian antelope and is endemic to the Indian subcontinent. They stand 1–1.5 metres (3.3–4.9 ft) at the shoulder and their maximum weight recorded is 308 kilograms [read more: buff.ly/30hvV2e]
673
In this video, YouTube channel Robinson Foundry shows how they made a bolt with unique zigzag threads starting from a 3D printed model [full video: buff.ly/3neAWHB]
674
The giant manta ray is the world's largest ray and one of the largest fish. They can reach widths up to 8.8 m and weights up to 3,000 kg. This clip by Matthew David Kaplan documents a striking encounter with one of them [source: buff.ly/3b1H7rB-]
675
This is what happens when a tree branch falls on a 150 kV power line
[source, wickedinsight: buff.ly/2NeMyWJ]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links