1826
Viscosity is the resistance to flow of a fluid. Motor oil viscosity grades are based on a scale using letters and numbers. This is practical way to compare engine oils
[read more: buff.ly/3uy3IWd]
[source: buff.ly/3Y1NRge]
1827
Leonardo is a bipedal robot that combines walking with flying to create a new type of locomotion. It can walk a slackline, hop, and even ride a skateboard
[📹 Laurie Leshin]
[learn more: buff.ly/3DBGv81]
1828
Neuronal migration is fundamental in central nervous system development. The assembly of functioning neuronal circuits relies on migration. This is a time-lapse phase contrast microscopy of migrating neuronal cells [Graham Wright: buff.ly/3qTkyOX]
1829
Mount Erebus is the second-highest volcano in Antarctica and the southernmost active volcano on Earth. This is what the ice towers that form around its steaming vents look like in a great picture by photographer George Steinmetz [read more: buff.ly/2ETU4RJ]
1830
Malachite is a copper carbonate hydroxide mineral, with the formula Cu₂CO₃(OH)₂. It crystallizes in the monoclinic system and most often forms botryoidal, fibrous, or stalagmitic masses
[📹@rocksforthe spirit: buff.ly/3F2MNB6]
twitter.com/Limportant_fr/…
1831
This video was created by @kevinmgill using still images taken by the @CassiniSaturn spacecraft during its flyby of Jupiter and later at Saturn. Shown is Io and Europa over Jupiter's Great Red Spot and then Titan as it passes over Saturn [source, HD: flic.kr/p/2aVJtyV]
1832
This Smithsonian Channel clip shows three plant species that use different methods of propulsion to spread their seeds. Violets, touch me nots, and poisonous squirting cucumbers explode in some pretty incredible ways [full video: buff.ly/3bhf2vL]
1833
Anothere review of the carved mahogany writing table, said to have been crafted specifically for use by King Carlo Alberto of Sardinia (1798-1849) with a surprising number of unusual secret compartments
[source, m.s.rau_: buff.ly/3gLf9GI]
1834
What is beneath the world’s largest ice sheet? Compiled by the British Antarctic Survey and made from Operation IceBridge data, this animated map of the changing Antarctic Ice Sheet reveals the bedrock terrain below with a level of detail never seen before buff.ly/35vesHb
1835
"Captured! by Robots" is a grindcore band founded by Jason "JBOT" Vance, but he programs two animatronic robots named "GTRBOT666" and "DRMBOT 0110" to perform guitar and drums both on record and in a live context
[Instagram: buff.ly/3W7EI4P]
1836
The diamond squid can grow to 100 cm in mantle length with a maximum weight of 30 kg. This remarkable picture was taken by Steven Kovacs in Blackwater dive off Palm Beach, Florida
[read more: ow.ly/t4lK30o4HDS]
[📷ow.ly/baFU30o4HE9]
1837
The Zarplotter is a four motor drawing robot originally created By Randy Szarzynski and others in California. ZipScriptPro is a smart variant that can write a letter exactly as if it was handwritten
[full video: vimeo.com/223048367]
1838
Osaka, Japan, has three major arched flood gates. In case of need, the arch shape floodgate lowers towards the upstream side. The whole process takes about 30 minutes [full video: buff.ly/2PRSXNu]
1839
The longest, published word in English is the term for the formula C₁₂₈₉H₂₀₅₁N₃₄₃O₃₇₅S₈, a protein that has 267 amino acids [read more: buff.ly/2H79ib0]
1840
Monitoring your health may get a lot easier thanks to this technology developed by a team of researchers in Germany. They created tattoos that change color according to the body’s levels of glucose and albumin or its pH [read more: ow.ly/rZ1m50wvf4U]
1841
Eucalyptus flowers have no petals, but instead decorate themselves with the many showy stamens and they are enclosed in a cap known as an operculum. This picture taken by Peter Nydegger perfectly captures their peculiar beauty
[read more: buff.ly/2KyXSPS]
1842
The mirror
[read more 1: buff.ly/3C1iskR]
[read more 2: buff.ly/3C0w2oq]
1843
«When I woke up just after dawn on September 28, 1928, I certainly didn’t plan to revolutionize all medicine by discovering the world’s first antibiotic. But I guess that was exactly what I did»
#Today in 1928, Alexander Fleming discovered penicillin
buff.ly/3m6l5c9
1844
This is a small motion test for Engineering Arts' Mesmer robot head. This head and neck has 22 custom servo actuators, but only 5 around the mouth which is not enough for really good lip sync (therefore, no talk) [video: buff.ly/3DKVPPq]
1845
This "angel cloud" spotted over Talca, Chile on Dec. 23, 2022 is an example of fallstreak hole, a large gap caused by supercooled water in the clouds suddenly evaporating or freezing
[read more: buff.ly/3idsYyt]
[📹 Peque Pinochet]
1846
This simple experiment shows the importance of pressure in siphoning. The middle bottle is capped and the air inside it takes space: that's why the fluid level cannot increase until the cap is removed
[source: buff.ly/3gyawzS]
1847
Emperor penguins survive temperatures of -60°C thanks to their feathers, densely packed as seen in the pictures. This paper by Cassondra L. Williams and her colleagues explains the type, density, pattern and functional role of emperor penguin body feathers ow.ly/dERG50xx4Wk
1848
MoMA recently released a short film from 1902 of a German suspended railway called the Wuppertal Schwebebahn, shot in 68 mm. It shows an unusual drone-like view of a German city at the beginning of the 20th century
[full video: buff.ly/3fOh6fn]
1849
The story of the 1983 Steve Jobs letter where he informed the sender that he did not sign autographs, paradoxically leaving his signature at the bottom of the page. It sold at an auction in 2021 for $500k
[read more: buff.ly/3QHWd8P]
1850
The Cereus Forbesii ‘Spiralis’ is a rare cultivar of the Cereus forbesii prized for its spiral growth habit. It is a cross-pollination between the Cereus forbesii and the Cereus peruvianus
[📸 Ernesto Murguía]
[source: buff.ly/3c6rOlk]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links