51
In this popular clip, Armenian steel worker Arkady Mgdsyan takes advantage of the Leidenfrost effect
An insulating vapor layer temporarily prevents the molten metal from harming him
[source: buff.ly/2LF6nsz ]
[read more: buff.ly/3p2AnRb]
52
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]
53
One pretty cool geological fun fact is that the Scottish Highlands, the Appalachians, and the Atlas are the same mountain range, once connected as the Central Pangean Mountains [read more: buff.ly/3oAZuKP]
54
Striking one tuning fork sets up a sympathetic vibration in the other, which can be shown by having a ping-pong ball attached to a thread
[read more: buff.ly/2GegL7J]
[resonance box: buff.ly/3ni5ruY]
[source of the clip: buff.ly/3vxrT75]
55
Automaton Robotics created this artificial muscles robotic arm operated by water, consuming 200W at peak. Dumbbell weights 7 kg (15,6 lbs) , forearm with hand only 1 kg (2,2 lbs) [read more: buff.ly/3jqZlY5]
56
The height of the waves in Praia do Norte, Nazaré, Portugal, is massive: it can reach 35 meters [read more: buff.ly/3jsANxA].
This is Sebastian Steudtner riding a huge wave on January 18, 2018 [full video: buff.ly/2PBDUqP]
57
Sunflowers are used to assist in clean up after a nuclear disaster. They are hyperaccumulators, capable of absorbing toxic heavy metals from the ground and have been planted at both Chernobyl and Fukushima in the attempt to aid in soil restoration ow.ly/sZ6L50xSyNW
58
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]
59
The cecropia moth is North America's largest native moth. As an adult, it doesn’t have a functioning mouth, since its only purpose is to mate. They survive ~2 weeks [read more: buff.ly/2YCaFWF-] [clip by mackattack_zoology: buff.ly/3E6UQJR-]
60
The first step to getting stuck in quicksand: Don't freak out. Humans actually can't drown in the stuff, because we float in it. Getting out can be simple, if you follow these instructions [source and full video: buff.ly/2ZsS00L]
61
In the XIX century, automatic candle snuffers like this one ensured you would not waste them, having enough candle for the following morning. You can by one here: buff.ly/3p3hYkC [read more about candle snuffers: buff.ly/3cSuL6Y]
62
This is a coloured scanning electron micrograph (SEM) of a red blood cell (erythrocyte) squeezing through a capillary. This is where the oxygen-exchange with the surrounding tissues happens. Magnification: x9000 [source: buff.ly/2pkUVFT]
63
The Goodyear Inflatoplane was an inflatable experimental aircraft made by the Goodyear Aircraft Company. Although improbable, it proved to be capable of meeting its design objectives, although orders were never forthcoming from the military [full video: buff.ly/36o1a09]
64
These strange solids aren't spheres and yet roll in interesting and unexpected ways. Watch some of the most curious geometries such as the Wobbler, the Oloid or the Steinmetz Solid [video, by YT channel Maker's Muse: buff.ly/2LUzXbQ]
65
You may have noticed that tigers have prominent white markings on their ears which sometimes look like eyespots. Scientists are divided and one theory is that those eyespots help protect tigers when they are drinking, i.e. more vulnerable [read more: buff.ly/2WnHxjA]
66
Squirrels' brains can grow in size during the fall to help them remember where they bury their nuts. Their brains are smaller the rest of the year [read more: buff.ly/2FMp6R7]
67
This 10 digits puzzle can be 3D printed and results in a nice numerical and geometrical satisfaction [3D print: buff.ly/2A0OKzg]
68
Morpho rhetenor is a Neotropical butterfly of the family Nymphalidae: it's sexually dimorphic and while the female is dark-brown, the male's wings are impressively bright blue. This short clip by biologist Joseph See neatly shows it [more on Joseph's IG: buff.ly/2APa6zM]
69
Using a peculiar undulating propulsion system, PES Velox robot is able to efficiently glide through the water, over rough land and has even become adept at the art of ice-skating [read more: ow.ly/693R30mZPwr]
70
This BBC video shows a visit to an extraordinary crystal cave in Mexico, la cueva de los cristales in Naica, Mexico. It contains large selenite crystals, up to 11 meters of length. It took an estimated 1 million years for the crystals to grow to this size: buff.ly/3GbSmMk
71
Poecilotheria metallica, also known as the peacock tarantula, is the only species in its genus to be covered in blue hair: it also exhibits an intricate fractal-like pattern on the abdomen [read more: buff.ly/2I3uBac] [clip by Daniel Vamu: buff.ly/3m3Qi0H]
72
Inosculation is a natural phenomenon in which trunks, branches or roots of two trees grow together. It is biologically similar to grafting & such trees are called gemels. This is an example (Bükk National Park, Hungary) where one tree was cut [read more: buff.ly/3B6xodW]
73
Reef squid possess a rare combination of semitransparency and the ability to change body color via chromatophores: this one shows how rapidly they can perform a body color change.
[📹 fishingaroundus: buff.ly/3bBndaB]
74
This now classic NASA video shows a space shuttle's solid rocket booster journey from launch to landing, with sound mixed and enhanced by Skywalker Sound [full video: buff.ly/30WLum1]
75
What looks like a scene from a post-apocalyptic movie, actually shows how a reforestation session in British Columbia takes place after wildfires. Leslie Dart planted 4,545 trees in a day
[read more: buff.ly/3p1RqCU]
[📹 buff.ly/3QlOahc]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links