376
A sneaker wave is a disproportionately large coastal wave that can appear in a wave train without warning. This video was shared by Marcella Ogata-Day to help bring awareness of the dangers of sneaker waves [source, read more: buff.ly/3GyVgu9]
377
Nothing actually surprising. This is what happens to a small plane in strong headwinds. Airspeed is positive, but groundspeed is zero (sometimes even flying backwards)
[video explanation: buff.ly/3AzMADf]
[clip by TikTok's Jenniferireneotto]
378
Humpback whales produce songs that can travel at least 10 km. They are so complex they are divided into layers: "sub-units", "units", "subphrases", "phrases" and "themes"
[read more: buff.ly/3PImDWy]
[📹 Caine Delacy: buff.ly/3QG57Dw]
379
The dragon moray eel
Nocturnal feeder, it's rarely seen. It grows up to 80 cm in length and has a serpentine shaped body which has quite variable coloring.
[read more: buff.ly/3caP2Hc]
[📹 Jeff Leicher: buff.ly/3c7gmG7]
380
The Southern right whale is found throughout the Southern Hemisphere and is listed as endangered, being its global population around 10,000. Photographer Maxi Jonas filmed this encounter with one of them in September 2021 [source: buff.ly/2X5W7kz-]
381
Synsepalum dulcificum, also known as miracle berry, is a fruit that, when eaten, causes your taste buds to not detect sour flavor for about half an hour, causing sour foods to taste sweet [read more: buff.ly/2DTlxm2]
382
Most geckos cannot blink, but they often lick their eyes to keep them clean and moist. They have a fixed lens within each iris that enlarges in darkness to let in more light [read more: buff.ly/2G8X6BY]
383
A sod roof, or turf roof, is a traditional Scandinavian type of green roof covered with sod on top of several layers of birch bark on gently sloping wooden roof boards buff.ly/2ULfwll [photo: Faroe Islands by İlhan Eroğlu, IG: buff.ly/2NeE0Dk]
384
How a swarm of robots is able to extract vehicles from confined spaces with delicate handling, swiftly and in any direction [source, full video: buff.ly/2T48kPa]
385
Betsy is a black and white longhaired Border Collie, credited with being one of the world's most intelligent dogs. She has a vocabulary of more than 340 words, which rivals that of the great apes in terms of intelligence and lateral thinking [read more: ow.ly/2DaM30n5Vex]
386
You may know that the world's first cyber-attack happened in 1834 when two bankers, François and Joseph Blanc bribed the semaphor telegraph operator to introduce deliberate errors into routine government messages being sent over the network [read more: buff.ly/2tPuqNA]
387
Telescopefish are solitary, active predators, frequenting the mesopelagic to bathypelagic zones of the water column, from 500 to 3,000 m. The common name of these fish is related to their bizarre, tubular eyes ow.ly/ER2330n5ayW [source of the photo: ow.ly/lIro30n5az6]
388
This demonstration seems to defy thermodynamics in that it appears that entropy decreases, but reversible mixing is actually made possible by ensuring that the mixing/unmixing is done without turbulence [source, full video, UNM: buff.ly/3CF7H61-]
389
Vintage blade sharpeners are sometimes surprising little mechanical jewels. This video by Igor Dolinar shows 5 minutes of sharpeners working, including this 1920s Kriss Kross specimen [video: buff.ly/3k846Vx] [Kriss Kross: buff.ly/37rY1hB]
390
The EVNautilus team of researchers spotted this elegant Cirroteuthid octopus dancing at a depth of around 1,600 meters. It measured an estimated 20 centimeters across and entertained the team for more than five minutes [source and full video: buff.ly/30aoz08]
391
Why are some things darker when wet, if water is colorless? This is the explanation: ow.ly/7d0J30n60YQ
392
Plants do actually move: we just don't live in the same time reference frame. This 3-day time lapse shows the so called plant's nastic movements, mostly due to changes in turgor or changes in growth buff.ly/30a2rqp [source, full time lapse: buff.ly/3eTvEdw]
393
This is not a spiral: what you see is a series of concentric circle and the reason is the so called Fraser spiral illusion buff.ly/2J7lI0Y [this version is by @AkiyoshiKitaoka: ow.ly/3vHc30n6gSr]
394
This is what happens when you put ferrofluid in a rotating magnetic field: its dynamics creates Hele-Shaw cells and consquent weird shapes [source and full video: buff.ly/2J6UvLF]
395
Kallima inachus, the orange oakleaf, is a butterfly found in Tropical Asia. With wings closed, it closely resembles a dry leaf with dark veins and is a spectacular and commonly cited example of camouflage buff.ly/2yt4bPq [source of the gif: buff.ly/3CDVAG5]
396
The Andromeda galaxy is 6 times bigger in the sky than the full Moon: it's just too dim to see with the naked eye. This composite created by Tom Buckley-Houston shows what it would look like at night if it was just brighter [read more: ow.ly/EMek50A0CeU]
397
The emerald cockroach wasp is known for its unusual reproductive behavior, which involves stinging a cockroach and using it as a host for its larvae. Photogrpaher Hrodulf Steinkampf took this photo of one found in Bloemfontein, South Africa [source: buff.ly/31gafF1]
398
Alsomitra macrocarpa has seeds which use paper-thin wings to disperse like giant gliders. The seeds, which are produced by a football-sized pod, can glide hundreds of metres across the forest [read more: buff.ly/2xzxEqt] [full video: buff.ly/2EDymnV]
399
Normally, the Atacama Desert in Chile, receives less than 12 mm of rain a year. However in the years when rainfall is unusually high, between September and November, this can happen. It's called «desierto florido» [read more: buff.ly/3lSH2uf] [📸buff.ly/3gEsahO]
400
Salar de Uyuni is the world's largest salt flat. Following rain, a thin layer of dead calm water transforms the flat into the world's largest mirror, 129 km across [read more: buff.ly/37Ugxma-] [source, David Houncheringer: buff.ly/370vKSj-]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links