2351
Energy density is the amount of energy that can be stored in a given system, substance, or region of space.
Uranium is the most energy dense among fuels.
[source, read more: buff.ly/3PzPMF9]
2352
Photographer and sculptor Yves Lappert uses pieces of wood and other simple materials to play with lights and shadow, obtaining extremely effective optical illusion with a minimalist gestures [IG account: buff.ly/3x1HmPD] [site: buff.ly/3NHrTK6]
2353
55 years ago #Today, the Concorde, the joint British-French venture and the world's first supersonic airliner, was unveiled in Toulouse, France bit.ly/2kpX8gi
2354
Refraction of light through a glass slab using a laser beam
[full video, Vinod Avnesh Kumar: buff.ly/3Dfragv]
2355
Music theory has no axiomatic foundation in modern mathematics, yet the basis of musical sound can be described mathematically. One example comes from Dylan Tallchief, who created a complete digital music studio app in Excel [📹: buff.ly/3ezmUtb]
2356
At first glance this photos by Andre Ermolaev looks like a twisting abstract painting, but in reality it's an aerial photo of rivers flowing through Iceland’s endless beds of volcanic ash
[source, more pictures: buff.ly/2CQYJIY]
2357
The Autoped was an early motor scooter manufactured by the Autoped Company of Long Island City, New York from 1915 to 1921
[read more: bit.ly/2x5PifL]
[in the photo, Priscilla Norman, activist and suffragist, riding one: buff.ly/33OQAC9]
2358
This is an excerpt from the original US Patent number 3005282 A, issued 61 years ago #Today, proposing a design for a "Toy building brick", from a company named LEGO. That brick became much more than a simple toy buff.ly/2W9C0gy
2359
With an improved haptic device, this Naver Lab robot used various human-like movements to successfully complete the difficult task of assembling an IKEA chair without any special additional devices [full video, normal speed: buff.ly/3Qql4NS]
2360
23% of the world's fresh surface water - more than every American great lake combined - is in lake Baikal [source, read more: buff.ly/2G9hVl9]
2361
The Geneva drive is a gear mechanism that translates a continuous rotation into a discrete motion
[source, read more: buff.ly/2nya5bS]
2362
This clip by MacroLab 3D compares an acupuncture needle (0.16 mm) with an insulin needle (0.3mm/30G) and a standard syringe needle (0.6mm/23G). A human hair knot is visualized for scale
[video, HD: buff.ly/3Af7VA4]
2363
The functioning guitar the size of a human blood cell (with six strings each about 50 nanometers, or 100 atoms, wide) that the Cornell University scientists created in 1997
[read more: buff.ly/2sWwK1A]
2364
The great potoo, or Ghost Bird.
[source, read more: buff.ly/3VOS8SP]
2365
Sometime around 30,000 years before the current era, somewhere in the midst of the land that would become Germany, a human sat in a cave and sculpted a horse. Later, we’d call it the Vogelherd horse: the earliest horse sculpture ever found [ read more: buff.ly/2NNHMoy]
2366
1905 is called Albert Einstein's annus mirabilis, because of the four papers that shook the foundations of modern physics. They were about the photoelectric effect, the brownian motion, the special relativity and the mass-energy equivalence. He was 26 buff.ly/3rY7EMD
2367
The Wärtsilä-Sulzer RTA96-C is the largest reciprocating engine in the world. It's designed for large container ships: it produces 109,000 horsepower.
[read more: buff.ly/3iSed43]
[source: buff.ly/3VJWlal]
2368
A quite effective visual explanation of the checker shadow illusion [read more: buff.ly/2He9KRw] [source and verification: buff.ly/31LyhYv]
2369
Elephants learn to fully control their trunk around 9 months - 1 year of age. This video collage by National Geographic show some glimpses of this process
[sources: buff.ly/3EkpnUf]
[read more: buff.ly/2QIOIlV]
2370
In a trip to Japan Albert Einstein found himself without any money to give a courier a tip for his delivery, so he wrote a note advising him to keep it as it may one day be worth more than any tip he could give him. It sold in 2017 for $1.56m [full story: buff.ly/2yk0ZTb]
2371
It has 600 million year of distance from us, three hearts, no bones, a beak with a venomous bite and a gut that runs though its brain and yet it can befriend a human teenager. Meet Laurel and her pet octopus Heidi [full video: buff.ly/2nfbc1t]
2372
This classic short film shows how to make an igloo using only snow and a knife. Two Inuit men in Canada’s Far North choose the site, cut and place snow blocks and create an entrance--a shelter completed in one-and-a-half hours [full video: ow.ly/Ia6r30n6nu3]
2373
How locks and keys work
[video: buff.ly/2gRz85Q]
[gif: buff.ly/2Ea4Jue]
2374
An osprey can take live fish weighing up to 2 - 2.8 kg and carry it for long distances. This footage filmed by Ashley White in Myrtle Beach, South Carolina in 2020 shows one transporting a Spanish Mackerel
[source, read more: buff.ly/3czOlHG]
2375
Fun fact: the fusion chamber at the Lawrence Livermore's National Ignition Facility (which recently achieved a nuclear fusion reaction with Q > 1) provided backdrop for the warp core in "Star Trek: Into Darkness" (2013)
[read more: buff.ly/3HCym8C]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links