826
This incredible compilation of seamless metal engineering by the Beijing Jingdiao Group will give you an idea of what a very tight mechanical tolerance looks like
[video: buff.ly/3HkrNHT]
827
Presented at CES 2022, Engineered Arts’ Ameca humanoid robot has been designed as a platform for development into future robotics technologies with a modular architecture, which allows upgrades without redesigning the entire robot: buff.ly/3ojvm7i
828
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
829
The mesmerizing defensive display of a hognose snake. Thankfully, most varieties of hognose snakes are considered harmless to humans.
[read more: buff.ly/3A5T9gq]
[source: buff.ly/3DWn8Zo]
830
Part of an overview of human history, this animation made with Blender shows how humans spread across the globe and their migration paths
[full video, History: In Context: buff.ly/3zEk5Cz]
831
In the 16th century, Copernicus proposed a fundamental change to the way we see our Solar System. This is a short depiction of the shift in thought between Ptolemy-Copernicus-Kepler, made in Blender
[video by Timothy Rowe: buff.ly/3QMBZKz]
832
Figure of speech: hyberbole, exaggeration for emphasis or effect
(but you never know)
833
What looks like an awful dispute between neighbors underwater is actually a behavior that many fish show, especially gobies. They dig burrows, sift sand and they're territorial. So, this.
[source, HD: buff.ly/3Pt03Bm]
834
A Van de Graaf generator pulls electrons from Earth, moves them along a belt & stores them on a sphere. These electrons repel each other: when a student puts a hand on it, hair is the most obvious place they show up
[📹 adbeahm: buff.ly/3FUEGqK]
835
A gimbal is a device consisting of a pivoted ring or rings capable of swinging freely while mounted on a fixed frame. This is possibly a much more mundane usage of it than you might expect: grilling [source, Gualberto Elizondo: buff.ly/2NPYCke]
836
This rocket launch from NASA-Kennedy in Cape Canaveral, Florida was caught on camera from a distance of 21 km away and altitude of 8,500 m by E. Milner on a flight from Baltimore, Maryland to Fort Lauderdale, Florida in 2016
[HD: buff.ly/3OAVp5v]
837
This is a clever variant of the Café wall illusion with an illusory motion addition by @AkiyoshiKitaoka: these rows are perfectly horizontal, and, they are not moving [read more: buff.ly/2KzUL6L]
838
This is what the inside of the mouth of a leatherback sea turtle looks like [read more: bit.ly/2w8YG2S]
839
Can you explain the missing square?
Hint: check the hypotenuse
[solution, read more: buff.ly/2Ru2msq]
840
This is the Teotihuacan pyramid of the Sun before the excavations at the beginning of the XX century vs now. A simple hill covered by bushes and trees.
[see the early pictures of the pyramids: buff.ly/3i4oUjV]
841
Theo Jansen has been creating large-scale, kinetic beings powered entirely by wind since 1990. Based on a planar leg mechanism known as Jansen's linkage, you can often see them waddle, wriggle, or slither across a Dutch beaches
strandbeest.com
842
The ocean sunfish is the world's heaviest known bony fish: it reaches up to 2,300 kg of weight & 4.2 meters of size across the fins
[read more: buff.ly/2p3FDYk]
[video: buff.ly/2PTq3fA]
843
This is a map of the Atlantic Ocean floor published in 1968 based on a large number of deep ocean soundings compiled by Bruce Heezen and Marie Tharp, painted by Heinrich Berann for National Geographic Magazine
[source: ow.ly/lV6s50xCwM5]
844
On April 5, 2008, the Japanese spacecraft Kaguya captured this full Earth-rise over the Moon limb in high resolution
[source: buff.ly/3aHI99o]
845
The bizarre floral appearance of Hydnora africana seems almost extraterrestrial, but in fact it is finely adapted for pollination in its arid habitat. This plant, resident of southern Africa only emerges from the soil to flower
[source, read more: buff.ly/3VpbsoZ]
846
Where the terms 'uppercase' and 'lowercase' came from: from the early days of the printing press
[read more: buff.ly/2J5iUB6]
847
A zoetrope is one of several pre-film animation devices that produce the illusion of motion [ow.ly/vDAu30oawYi]. This is a 3D printed part created by Akinori Goto, which allows a light to project a simple, essential animation [source and more: ow.ly/uLbN30oax2A]
848
The Kandariya Mahadeva Temple is the largest and most ornate Hindu temple in the medieval group found at Khajuraho in Madhya Pradesh, India. Its main tower has 84 mini spires and a definitely impressive fractal-like structure [read more: buff.ly/3ksF9oI]
849
This now iconic video by Stephen Morris shows how a domino can knock over another domino about 1.5x larger than itself. A somewhat surprising mechanical chain reaction
[video: buff.ly/2rJ6IjW]
[longer version: buff.ly/3f0r93N]
850
This video shows an interaction test conducted with an Engineered Arts Ameca humanoid robot. Images from its eye cams are processed using tensorflow and Ameca reacts as things enter their 'personal space'
[source: buff.ly/32rpzEf]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links