1501
Ron Coleman mine was and is the most productive quartz mine in Arkansas. It has been producing quartz crystals in large quantities since 1943. This is a big, beautiful quartz crystal cluster found in the mine
[source, read more: ow.ly/WJIh50xukLs]
1502
Experience a nuclear explosion first hand in virtual reality
On November 1, 1952, the US detonated the world’s first hydrogen bomb on Enewetak Atoll. This is a recreation in VR via Oculus Rift
[📹 A Wolf in VR: buff.ly/3J42UgN]
1503
Roughly the size of a thumb, pelagic red crabs are not true crabs: rather a species of squat lobster that lives off Baja California. But in exchange they are very curious
[read more: buff.ly/3qreAE9]
[📹 Jessica Harmon: buff.ly/33eMlA0]
1504
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]
1505
Photographer Douglas Croft took this photo from a porthole near the waterline on another boat and captured this amazing perspective of a humpback whale breaching
[read more: buff.ly/3iEHjjI]
[author's site: douglascroftimages.com]
1506
Uroplatus phantasticus, the satanic leaf-tailed gecko, is a species indigenous to Madagascar. Its specific name phantasticus is the Latin word for "imaginary", based upon the gecko's unique appearance
[📹 chromatic_chameleons: buff.ly/3Q4thqw]
1507
«From grandma to young woman». The effects of the g-forces on a human are mostly visible here in the facial muscles and in the temporary change of aspect, but they actually do much more [read more: buff.ly/2ZwZrXo] [source: buff.ly/3cUItFo]
1508
Agate is a popular gemstone that’s a banded form of finely-grained quartz. One variation of the stone features tiny, abstract scenes that resemble mountains, rivers, and skies. This has earned them the nickname “landscape agates” [source, read more: ow.ly/oUoc50wO0xx]
1509
Light pillars appeared in the sky over the southern island of Jeju, South Korea on October 26, 2022
[read more: buff.ly/3zhSGXY]
[how they form: ow.ly/1N2030mlOyf]
1510
Using fine art woodworking techniques, Larry Marley creates whimsical figurative sculpture & kinetic art. His intricate marble machine modules are both complex and satisfying to watch
[site: larrymarley.com]
[Instagram: buff.ly/3q1boh6]
1511
The tidal cycle
This 2011 time lapse movie speeds up by 720 times the fall and rise of the tide in Hall's Harbour, Nova Scotia,
[📹 Leo de Groot: buff.ly/3ipfMld]
twitter.com/CURIOSITSClENC…
1512
The bacterial flagellar motor is the nature's version of the electric motor and can rotate at speeds in excess of 30,000 rpm [source: ow.ly/iM7a30n8fpg]
1513
When MIT made an army of tiny, 'virtually indestructible' cheetah robots capable of backflipping and even playing with a soccer ball — see them in action [full story and full video: buff.ly/2PZha2o]
1514
It is generally thought that, in average, the largest amount that an ant could drink is about 35 μl. The clip also shows how ants need space to store water in their abdomen
[read more: buff.ly/31hEAIc]
[Ajith Subramanyan: buff.ly/3E5kDT7]
1515
This is what happens when a cat meets an optical illusion by @AkiyoshiKitaoka
[📹 Squirrel Master/Ryan Kotzin: buff.ly/3ORQziN]
1516
Sloth's claws work the opposite way that human hand does. The default position is a tight strong grip, and sloths must exert effort to open them up. This is why sloths don't fall out of trees when they're asleep [read more: buff.ly/3zDNBsC]
1517
Fruit farmers' most difficult task is organizing the havest. Tevel's drones select, pick and box only ripe fruits with the help of an AI working day and night
[full video: buff.ly/3APys9i]
1518
Kummakivi is a large balancing rock in Ruokolahti, Finland. The 7-meter long boulder lies on a convex bedrock surface with a very small footprint but so firmly that it cannot be rocked with human force
[read more: buff.ly/3gFWDJK]
1519
Often shared as Koko's final message to humanity delivered before her death, this clip is actually a public service announcement addressed to COP21 for which the gorilla who learned the sign language received a script
[fact check: buff.ly/3Aw8FT7]
1520
What's the difference between an alligator (left) and a crocodile (right)?
The most visible one is alligators have a U-spaced rounded snout that is wide and short, whereas crocodiles have a longer pointed, V-shaped snout
[read more: buff.ly/3E63MiR]
1521
Argentinosaurus lived on the then-island continent of South America somewhere between 97 and 93.5 million years ago, during the Late Cretaceous Period. It is among the largest known dinosaurs & this is the size of its leg ow.ly/LhLT30okz14 [photo: buff.ly/2K4EgDv]
1522
Smoke rings (or more precisely, steam rings) are rare, spectacular events seen in volcano plumes
[read more: buff.ly/2p5QXis]
[video by Geoff Mackley: buff.ly/2SXaFeN]
1523
The pied kingfisher is the largest bird in the world that is able to hover without using air currents. This means it doesn’t need a perch to hunt for fish, but can do so from the middle of a lake
[full video: buff.ly/38GmA9h]
1524
Of the 118 elements that make up everything—from the compounds in a chemists arsenal to consumer products on the shelf—44 will face supply limitations in the coming years
[read more: ow.ly/Oytp30q2LZp]
1525
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]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links