1526
The goal of this project by photographer Georg Popp was to produce tahis single image made up of 600+ sea urchin shells. The largest urchins are around 10-12cm in diameter, the smallest ones not even 0,5cm
[source, read more: buff.ly/3rP295D]
1527
Atelopus barbotini is a species of toad endemic to the uplands of central French Guiana. The frog's skin is covered with irregular fluorescent lavender loops over a background of aubergine, which is the deep reddish purple-brown color of aubergines buff.ly/35tk0Vd
1528
The story of Tom Brown, the retired engineer that became 'apple hunter', rescuing over 1,000 'lost' varieties in the last 25 years [read more: buff.ly/2S2eKDM]
1529
Concentration of sugar in plant's nectar increased by an average of 20% within minutes of sensing the sound waves of nearby bee wings through flower petals. This might be part of the reason many plants' flowers are bowl shaped, to better trap the sounds ow.ly/a98e30no0gt
1530
Making LEGO car climb slopes
The angle of inclination is gradually increased and the car improved to the limit (and beyond)
[full 📹 Brick Experiment Channel: buff.ly/3DwyCnz]
1531
Sodium polyacrylate is a sodium salt of polyacrylic acid with formula [−CH₂−CH(CO₂Na)−]ₙ widely used in consumer products. This superabsorbent polymer has the ability to absorb 100 to 1000 times its mass in water
[📹 YT Hacker007]
1532
The Mir mine is an open pit diamond mine located in Mirny, Russia. The mine is 525 m deep (4th in the world) and has a diameter of 1,200 m. This picture's perspective makes the surrounding town look miniature buff.ly/2saS5UQ [photo: ow.ly/tIcL30nKGHt]
1533
The seeds of these wild oats each have two bristles called awns. Once the seeds fall to the ground their awns help them do something truly extraordinary…they walk
[full video, BBC Earth: buff.ly/3gF2MLZ]
1534
Swimming crabs (Portunids) have two sets of legs: the first set is used for walking on land, and the second set is used to help them swim underwater.
[read more: buff.ly/3BryMeG]
1535
Why math love stories are never happy stories
[source, u/theroundpanda: buff.ly/3Mf2nvJ]
1536
The mirror
[read more 1: buff.ly/3C1iskR]
[read more 2: buff.ly/3C0w2oq]
1537
Atheris hispida is a venomous viper species endemic to Central Africa. It is known for its extremely keeled dorsal scales that give it a bristly appearance [read more: buff.ly/2pD6pE6]
1538
The Jabuticaba is a tree native to Brazil whose flowers and its fruits grow directly from its trunk [read more: bit.ly/2gv3D2V]
1539
This is an active ball joint mechanism enhanced by interactions of spherical gears with three rotational degrees of freedom without slippage. A concept with a potential for many applications in robotics & mechanics
[full paper: buff.ly/3AARcIY]
1540
The Taiwan blue magpie is a species of bird of the crow family. Also known as “long-tailed mountain lady”, is considered a rare and valuable species and has been protected by Taiwan [read more: buff.ly/2GBQrBl] [source of the image, Su Min Du: buff.ly/2NFli9e]
1541
Comparison of the height of the most known trees, from the apple to the tallest tree in the world
[full video, HD, Red Side: buff.ly/3dHRLrO]
1542
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
1543
Simon Berger's unique sculptural language explores the depth of his material through striking and cracking the glass he works on with a hammer. This was obtained with hammered and layered glass sheets
[site: simonberger.art]
1544
Stotting (also called pronking or pronging) is a behavior of quadrupeds in which they spring into the air, lifting all four feet off the ground simultaneously [read more: bit.ly/2CPwGVi-] [video by Dave Mott: buff.ly/3ELDin7-]
1545
Inspired by a long tradition of impossible objects, this 'impossible portal' created by coded loop artist @jn3008 challanges your mind leaning toward you or away from you according to the point of the portal you focus on [site: jn3008.com]
1546
What does the path of a bicycle pushed until it falls over look like? These are the paths of 800 unsteered bicycles obtained by CalTech's Matthew Cook
[full paper: ow.ly/WOfV50CgppT]
1547
This is a 300-year-old book wheel kept in the Biblioteca Palafoxiana, Puebla, Mexico: it allowed 18th century researchers to have up to seven books open at once
[source, read more: buff.ly/3xCkxka]
1548
Kirigami (切り紙) is a variation of origami, where the paper is cut as well as being folded
This paper investigates the creation of shape-morphing material structure with Kirigami & this is how you square the circle
[full paper: buff.ly/3gbPdUh]
twitter.com/garyptchoi/sta…
1549
Hippos can’t swim. So how do they move through water? They leverage their own buoyancy and bone density to charge through the water
[read more: theatln.tc/2qJpFn6]
[📹 realalishahraki: buff.ly/3O3lXL4]
1550
Before smartwatches, there was the Seiko UC-2000 wrist computer. It could store 2K of data, tell the time, and perform calculator functions. It made its debut in 1984 [read more: buff.ly/3vRejMX]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links