1226
Melissani Cave is located on the island of Kefalonia, in the Ionian Sea. Some say the water is so clear the boats look like they are floating on air, like this picture by Dionisis Kaminaris seems to confirm buff.ly/2OWUbDh [source of the photo: buff.ly/2X0WqKh]
1227
When in the water, marine iguanas' blood circulation is reduced, with a heart rate of ~30 bpm vs 100 bpm on land, allowing them to better conserve their warmth [read more: buff.ly/3DTPx13-] [video by Kenzo Kiren: buff.ly/3HH06Xp-]
1228
Artist Timur Zagirov has created a beautiful rendition of Van Gogh’s famous self portrait, using 425 polished, colored wooden blocks of pine. The curious thing about it, is that you see a Van Gogh only if you squint or you look at it from afar [source: buff.ly/37edj9o]
1229
Hövding’s airbag for cyclists is activated (and rendered unusable after it has inflated) in the event of a crash. It recently received independent tester Certimoov’s protection rating of 4.5 stars, while no other cycling helmet received more than 4 [more: buff.ly/3BfPF8P]
1230
Germanium (and germanium oxide) are opaque in visible light, but transparent in infrared. This clip demonstrate this property of the element
[read more: buff.ly/3T2SILu]
[📹 Cody's Lab: buff.ly/3T4mKPk]
1231
Airless tires, non-pneumatic tires (NPT), or flat-free tires are tires that are not supported by air pressure. This is the Michelin model buff.ly/30fgriO [video: buff.ly/2YaWK9b]
1232
Researchers have discovered that one population of white-faced capuchin monkeys in Panama have entered the Stone Age. The monkeys have started using stone tools to break nuts and shellfish, making them the fourth type of primates to do so after us [more: buff.ly/3EVdTqB]
1233
A propeller driven shower head uses micro-holes and built in propeller to force the water to shoot out at higher speed and pressure [read more: buff.ly/3nXGV2F] [gif: buff.ly/3bFI9d3]
1234
The Lopifit electric walking bike is an electric assisted treadmill and bike combined – an innovative way of moving and exercising invented in The Netherlands
[read more: buff.ly/3ieODWG]
1235
Controlled by servo-motors and an Arduino Uno, this scented tree moves respecting the physics of an actual car in motion for an immersive gaming experience
[source + more info, Reddit's u/JamesF890: buff.ly/3T5ZyA5]
1236
Owls are masters in using blind-spots and in flying in an extremely silent manner, thanks to a special feather adaption
[read more: buff.ly/3Qln1uX]
[📷 Tom Samuelson: buff.ly/2YSm6cI]
1237
The Megalodon is an extinct species of shark that lived approximately 23 to 2.6 million years ago. Reaching 20 meters in length, it looked like a stockier version of the modern day great white shark: this is a comparison between their teeth [read more: buff.ly/2qoyqj1]
1238
The central square is NOT moving.
Color-dependent motion illusions in stationary images: What causes illusory motion? The answer at this page by @AkiyoshiKitaoka
[source, read more: bit.ly/2r5OZUO]
1239
Dr Tatiana Erukhimova from TAMU Physics demonstrates Newton's first law with a masterful egg drop
[📹 TAMU Physics & Astronomy: buff.ly/3zrXjz3]
1240
Civita di Bagnoregio was founded by the Etruscans more than 2,500 years ago. Due to its unstable foundation that often erodes, Civita is famously known as "the dying city".
[read more: buff.ly/2ZhdOwq]
[📹 manutoni24: buff.ly/3VzUQus]
1241
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]
1242
The Rolling Stones debuted their iconic Tattoo You album in 1981. In 2021, BostonDynamics issued their peculiar 40th celebration featuring the robot star Spot in a “Spot me up” version of ‘Start Me Up’ from Tattoo You 2021 [video: buff.ly/3mnKCPt-]
1243
Artist Matej Kren’s “Idiom” at the Prague Municipal Library is an art installation where hundreds of books are stacked in a cylindrical tower. Mirrors placed at the bottom and the top give the exhibit the illusion of being infinite [source, read more: buff.ly/2ZwPA3o]
1244
Sometimes simple tools make sophisticated technologies look pleonastic: this is how you can smoothly display different materials in interior design without 3D rendering [source: buff.ly/3wepL4p]
1245
"Confusing perspective"
[📹 Larry Carlson: buff.ly/3qaubXW]
1246
The earless monitor lizard (Lanthanotus borneensis) is a semiaquatic, brown lizard native to the Southeast Asian island of Borneo. It is the only living species in the family Lanthanotidae and their appearance recalls that of a real life dragon ow.ly/oPTy30noXEM
1247
This video illustrates how traditional rope is made: the process, visualized by the confraternity of San Pascual Bailón de Calatayud, patron saint of ropes, starts with smashing grass fibers and ends with the braiding phase: buff.ly/3uWTCO7
1248
Bat’s talons or back claws work opposite of most muscles. When they relax, special tendons lock the toes and talons in place. Muscular power is needed to let go, but not to grasp a perch or when holding on [read more: buff.ly/3qSr3jm] [source: buff.ly/3pYWVni]
1249
One of the most stunning reports of our visit of a comet is probably this view of 67P/Churyumov–Gerasimenko among dust, stars and cosmic ray hits, as captured by @ESA_Rosetta on June 1, 2016 and processed by @landru79 from these raw data: buff.ly/2vCPDLO
1250
Karakuri puppets are traditional Japanese mechanized automate wonders made originally from the 17th and up to 19th century. The word Karakuri stands for “trick” or “mechanisms” in Japanese
[source, HD: buff.ly/3du7ISm]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links