2151
Though this octopus is sleeping, its skin is wide awake. Does the color display mean that it's dreaming? There isn't yet enough evidence to say for sure if they dream the way that people do, but it's pretty impressive
[read more: ow.ly/jeMX30o4mPm]
2152
Foraminifera are single-celled marine organisms with shells made of calcium carbonate. In Bermuda, one particular species, Homotrema rubrum gives beaches a pink tint with its shells
[read more: buff.ly/3cePbWA]
[📹 Hendrick Hartono]
2153
The brown long-eared bat has distinctive long ears but it doesn't use echolocation, preferring to visually detect prey. This is a baby specimen, Cruella, found in Somerset in 2010
[📷Richard Austin, read more: buff.ly/3VaXcRu]
2154
Born 200 years ago #Today, Louis Pasteur is renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization. His works are credited to saving millions of lives thanks to the vaccines for rabies and anthrax buff.ly/2QePXbq
2155
If you remember this robot, you're no longer young, but this is a fully functioning, screen accurate, full size replica of Johnny 5 from the movie Short Circuit (1986)
[more clips on IG: buff.ly/3OigEJ2]
2156
Doppelmayr Garaventa, an Austrian company, made this monorack to transport people and materials with a compact yet powerful design and it's available with different drive variants: petrol, diesel and electric [full video (DE): buff.ly/3pEn3DW]
2157
Did you know? In the time it took scientists to discover it, let it be a planet for 76 years, take away its planet status, say it might be a planet again, then explore it and have its best pictures: Pluto didn't even completed a full orbit around the Sun buff.ly/33W8JJo
2158
In 2014, in a rock slab in China dating back some 120 million years, scientists discovered the skeletons of 24 "baby dinosaurs" called psittacosaurs and that of an older individual, suggesting a caretaker was "babysitting" the nestlings [read more: buff.ly/3opuvBW]
2159
Jewel scarab beetles
They have an exoskeleton that contains intricate nano-structures that are responsible for their appearance
[read more: buff.ly/3BfQpwN]
[📹 Krzysztof Pach: buff.ly/3RZd736]
2160
How exactly does the mysterious assassin's teapot work? Interestingly it relies on surface tension and atmospheric pressure. Steve Mould explains
[source: buff.ly/3BkZ81F]
[more: buff.ly/3ETtdpE]
2161
Meet the Gastric-Brooding Frog. After laying her eggs, the female swallowed them whole. Weeks later after hatching and metamorphosing, tiny froglets would emerge from her mouth. Sadly, this species went extinct in 1981 [read more: buff.ly/2wAIjAF]
2162
1959's Friden SBT10 was a very luxury full function mechanical calculator. This video shows how it divides 355 by 113 (approximation of π) and other calculations
[read more: buff.ly/3CQkKRa]
[source, Tiny H: buff.ly/30WLB0T-]
2163
#Today in 1983, Stanislav Petrov, an officer of the Soviet Air Defence Forces, correctly identified as a false alarm an early warning about an American multiple ICBM attack, possibly avoiding an escalation to a full-scale nuclear war [read more: bit.ly/2B7vhHJ]
2164
Stare at the central cross for 15-20 seconds
3 distinct illusions take place:
- Troxler fading (the pink discs disappear)
- a green disc is now flying around the circle by itself
- afterimage
[read more: buff.ly/3xmkOrY]
2165
With rice transplanting, seedlings are grown in a nursery, transported and transplanted into puddled fields 15 to 40 days after seeding. Rice seedlings can either be transplanted manually or by machine, like in this case [📹: buff.ly/3Jh2XaD]
2166
Researchers have developed a handheld 3D skin printer that deposits even layers of skin tissue to cover and heal deep wounds. The team believes it to be the first device that forms tissue in situ, depositing and setting in place, within two minutes or less buff.ly/2rge8ZD
2167
This is how pregnancy shifts and moves the mother’s internal organs to make room for the baby
[interactive version: buff.ly/2YJy5tm]
[source, read more: buff.ly/3skUF9O]
2168
The frilled shark is considered a living fossil, because of its primitive, anguilliform (eel-like) physical traits. It can reach 2 meters in length and commonly lives at depths of 50–200 m (160–660 ft)
[source, read more: buff.ly/3RXXus8]
2169
Magnetic aligners are suitable for aligning long, slender ferromagnetic objects like nails so they can be packaged compactly
[read more: buff.ly/2IXodHy]
[📹: buff.ly/3eA8YV1]
2170
The story of William Walker, the diver who worked six hours a day from 1906 to 1912 in total darkness at depths up to 6 meters to put down 25,800 bags of concrete, 114,900 concrete blocks, and 900,000 bricks to save the Wincherster catherdal's foundation buff.ly/3rr05yq
2171
Prairie dogs, a species of rodent native to North America, live together in little villages of underground burrows. They have a language with over 50 unique words including ones for “human” and “human with gun”
[read more: buff.ly/2KwHQVV]
2172
Lightning produced by an avil clouds is sometimes called a 'bolt from the blue' because it can occur in seemingly cloudless skies. It comes actually from the cloud's higher parts, arcing way to hit the ground
[📹 Hussainy Salah, Florida, July 2019]
2173
YouTuber MenzMade created this type of robotic arm that has two stages and four degrees of freedom, being entirely mechanical without any motor. It is actuated with wire rope and routed through bike cable in order to make the two stages independent: buff.ly/3m3QJqf
2174
In this video by QuantumBoffin, an experiment demonstrates the total internal reflection of light inside a glass block. An angular scale is used to measure the critical angle and determine the refractive index of the glass [full video: buff.ly/3eDRoNG]
2175
Gripping workpieces just as a chameleon's tongue grips insects – that is the operating principle of the adaptive shape gripper DHEF. The adaptive shape gripper grips energy-efficiently and reliably when combined with a pneumatic drive
[full video: buff.ly/3aX2dGA]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links