This impressive photo by Keri Lee Nelson shows us a mushroom-shaped iceberg. Part of a larger iceberg that's slowly shedding weight via calving, as it loses weight the smooth part (which has been submerged for some time) is rising out the water [source:] Image
This mushroom iceberg was observed in 1912 by Frank Hurley, who visited Antarctica as a member of the First Australasian Antarctic Expedition, 1911-1914 [source:] Image
Sometimes mushroom-shaped icebergs can look like something else. This is an iceberg shaped like a dragon, towering ~ 15 feet above the waters of Muir Inlet, Glacier Bay National Park, Alaska [source:] Image
Sometimes icebergs can look like mushrooms even though the formation mechanism is a bit different and more closely related to the one producing pinnacles, like this one captured by Joseph Tennein the Soty Shetland Islands by the Antarcrtic Peninsula Image

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More from @Rainmaker1973

18 May
41 years ago #Today, Mount St. Helens erupted: the deadliest and most destructive volcanic event in the history of the U.S. [read more:] [video:]
A red Ford Pinto with a blue dirt bike before the hell. The story behind one of the most puzzling photos of Mount St Helens' May 1980 eruption, happened 41 years ago #Today
In these two pictures, Mount St. Helens is showed before and after the devastating 1980 eruption, happened 41 years ago #Today
Read 4 tweets
27 Jan
They didn't make it to the Moon, but through their efforts and sacrifice we all did. The Apollo1 tragedy happened 54 years ago #Today [source, read more:]
«If we die we want people to accept it. We are in a risky business, and we hope that if anything happens to us, it will not delay the program. The conquest of space is worth the risk of life» - Virgil "Gus" Grissom, died on the #Apollo1 54 years ago #Today
54 years ago #Today, president Lyndon Johnson received this memorandum announcing the tragedy of mission later known as #Apollo1
Read 4 tweets
28 Dec 20
This animation shows the different effects produced by an earthquake on the conventional and anti seismic foundation of a building [source, Said Lopez:]
Anti-seismic fondation can use several kinds of dampeners. This is a bi-directional dynamic loading test on steel damper for base isolated buildings simulating the behavior caused by earthquake [source, full video, Tokyo Tech:]
Another kind of anti-seismic foundation is obtained using pendulum bearings that consist of an upper/lower spherical plate with sliding surface applied with special coating and a moving disc [source, full video, magebagroup:]
Read 4 tweets
14 Sep 20
Last year, a company named Nectome, "advetised" a service for backing up & (eventually) digitizing people's brains which was going to be 100%-fatal. They retracted saying it wasn't correct they expected to revive a whole consciousness from the connectome
The actual computational requirements for running an uploaded human mind are very difficult to quantify & strongly depend on the chosen level of simulation model scale. In other words, if you want a very precise copy, you need a ginormous processing power
There is, however, a different approach to mind uploading that uses a completely different set of technologies: mind virtualisation, i.e. extracting a number of characteristics from a mind to develop a model that can be used to simulate future behaviour
Read 6 tweets
21 Dec 19
People have speculated over the nature of seemingly useless physical human characteristics for thousands of years. It wasn’t until the late 18th and early 19th centuries, though, that the idea of vestigiality would enter the public imagination
Examples of human vestigiality are numerous, including the anatomical, the behavioral, and molecular. Among behavioral, goosebumps are caused by your arrector pili, the smooth muscle fibers that contract involuntarily when you are stressed, excited or cold
The palmar and plantar grasp reflex is found in infants of humans and most primates. When an object is placed in an infant's hand or close to a foot, the fingers or the toes will close reflexively, as the object is grasped via palmar grasp
Read 8 tweets
10 Apr 19
In few minutes, astronomers across the globe will hold six major press conferences simultaneously to announce the first results of the Event Horizon Telescope (EHT), which was designed precisely for that purpose Watch LIVE:
More about the Event Horizon Telescope, an international collaboration aiming to capture the first image of a black hole by creating a virtual Earth-sized telescope
Read 14 tweets

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