2251
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]
2252
Phyllocrania paradoxa, common name ghost mantis, is a small species of mantis from Africa remarkable for its leaf-like body. It comes in various brownish shades from very dark brown to greenish gray [read more: buff.ly/39qY4tL] [source of the gif: buff.ly/3pjbYI6]
2253
Is it rotating vertically or horizontally? Clockwise or counterclockwise? This optical illusion created by game developer & artist Frank Force features a moving shape that seemingly shifts each way and won the 2019 contest for the Best Illusion of the Year ow.ly/5jB730q2CJj
2254
Ultrasonic transducers in this mini acoustic levitator are speakers emitting sound waves at a frequency of 43,000 Hz, which corresponds to a wavelength of 8 mm for dry air. Standing waves with nodes of low pressure will 'hold' the foam [source, read more: buff.ly/3ju40Iu]
2255
The Buoyant Airborne Turbine is a concept of flying inflatable wind turbine which could generate consistent, low cost energy for the remote power and microgrid market, including remote and island communities [source, full video: buff.ly/3CvmcZd]
2256
Inspired by diving bell spiders and rafts of fire ants, researchers created a metallic structure so water repellent, it refuses to sink, no matter how often it is forced into water or how much it is damaged or punctured, which may lead to unsinkable ships buff.ly/2PRh1Ox
2257
Janusz Ronki is a video creator and video-effects artist who’s racked up tens of thousands of views on Instagram for his mind-bending VFX artistry.
[more videos: buff.ly/3PVikZX]
2258
There are some rock faces that are simply spectacular, including this rock face in Saltstraumen, near Bodø in northern Norway, result of the so called Caledonian Orogeny, happened about 490 – 390 million years ago [read more: buff.ly/2vsmu5W]
2259
The common basilisk is endemic to Central South America, where it is found near rivers and streams in rainforests. It is also known as Jesus lizard, for its ability to cross a surface of water by moving quickly before sinking
[📹: buff.ly/3C3PUaT]
2260
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]
2261
This strange creature was discovered by marine biologists in 2007. Teuthidodrilus, commonly known as the "Squidworm", is just as flamboyant as it is strange in appearance. ROV cameras reveal its highly interesting methods of swimming [full video: buff.ly/2q686Od]
2262
Manta rays have the largest known brain of any fish in the ocean. Underwater footage has even shown these rays are smart enough to give cleaner fish instructions, indicating to them which body parts need more attention [full video: buff.ly/3vS1Szk]
2263
The boiling point of dichloromethane is slightly below body temperature: heat from a hand increases pressure in the bottom bulb pushing the green (dyed) liquid through the glass pipe to the top [source, read more: buff.ly/3B88ZXH]
2264
How the Titanic engine worked
[📹 Jared Owen Animations, full video: buff.ly/3XiizS6]
2265
75 years ago #Today, Chuck Yeager became the first person to break the sound barrier flying the Bell X-1 rocket plane bit.ly/2d3rRgE
2266
The beautiful rocket ballet that is the “Korolev Cross”
[source, read more: buff.ly/32CiJIf]
2267
Sweden has the largest scale model of the Solar System in the world, 950 km across
[read more: bit.ly/2bwAAVp]
2268
The story of the Ericofon, the Ericsson one-piece plastic telephone: the first to incorporate the dial & handset into a single unit, considered one of the most significant industrial designs of the 20th century & sitting in the permanent collection of MOMA buff.ly/3pI4bCU
2269
The Eternal Flame Falls is a small waterfall located in the Shale Creek Preserve, New York. A small grotto at the waterfall's base emits natural gas (~ 1 kg of methane per day), lit to produce a small flame [read more: buff.ly/2kXS6rN] twitter.com/TrisjantoTJ/st…
2270
This is a feather star captured while swimming off the coast of Japan. Feather stars are crinoids or crinoidea, meaning “Lily-like” in Greek, and thrive in the Indian Ocean up to Japan, as well as in the Atlantic [full video: buff.ly/32OJR5m]
2271
A vapor cone is a visible cloud of condensed water which can sometimes form around an object moving at high speed through moist air, for example an aircraft flying at transonic speeds
[read more: buff.ly/2lkUJEo]
[📹 buff.ly/33HaFqR]
2272
This is rongorongo, the form of writing found on Rapa Nui or Easter Island, and it has not been deciphered. The last natives who could read rongorongo were priests who were captured in a Peruvian slaving raid in 1862 and subsequently died
[read more: buff.ly/2EPeNfa]
2273
This famous video shows Mount Tavurvur's spectacular explosion of August 29th, 2014. It also contains a bonus: the impressive visible and audible shockwave
[full video, Abyssius: buff.ly/2pOqVB4]
2274
This video by Kurdistan Planetarium and this gif chart extracted from it, brilliantly show how Earths tilt on its axis is the cause of the seasons [full video: buff.ly/3fHXA4e]
2275
A moment (momentum) was a medieval unit of time. The earliest reference to it is from the 8th century and since 1 hour = 4 points = 5 lunar points = 10 minutes = 15 parts = 40 moments, one moment corresponds to 90 seconds [source, read more: ow.ly/9mYL30n9At8]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links