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2 Aug, 4 tweets, 4 min read
Dave Scott performed one of the most legendary experiments: the galilean 'hammer & feather' held on the Moon, 50 years ago #Today go.nasa.gov/1mVWEHT #Apollo15 #Apollo50
One of the best series of photos taken during the Apollo 15's third extravehicular activity, 50 years ago #Today go.nasa.gov/2aKCzsh [5 photos stitched with MS ICE] #Apollo50 Image
The Apollo 15's Lunar Module liftoff and ascent from the rover camera was the first televised liftoff of a Lunar Module, 50 years ago #Today bit.ly/2aKKO7Y #Apollo50
The Apollo 15 Lunar Module liftoff and ascent as seen from the onboard camera bit.ly/2aq0N8x #50YearsAgoToday #Apollo50

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More from @Rainmaker1973

Massimo Profile picture
24 Jul
52 years ago #Today, the Apollo 11 mission returned safely to Earth. This is the view of Earth that the crew had before reentry go.nasa.gov/2aDLlWm
This is what the Apollo 11 crew saw when they reentered the Earth's atmosphere exactly 52 years ago #Today go.nasa.gov/2aDLlWm
52 years ago #Today, the Apollo 11 Command Module Columbia splashed down at 13°19′N 169°9′W, in the Pacific Ocean bit.ly/29XgT7L
Read 4 tweets
Massimo Profile picture
19 May
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: buff.ly/2QLLvRd] 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: buff.ly/3jDM9wI] 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: buff.ly/2EUK7cj] Image
Read 4 tweets
Massimo Profile picture
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: bit.ly/1L0dKzT] [video: buff.ly/3yi2RK7]
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 ow.ly/2aJK50vujyW
In these two pictures, Mount St. Helens is showed before and after the devastating 1980 eruption, happened 41 years ago #Today ow.ly/D9hG50wpiJN
Read 4 tweets
Massimo Profile picture
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: buff.ly/2jvXRwW]
«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 bit.ly/2Bx5UiV
54 years ago #Today, president Lyndon Johnson received this memorandum announcing the tragedy of mission later known as #Apollo1 buff.ly/2jmgSP1
Read 4 tweets
Massimo Profile picture
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: buff.ly/3nPrt7j]
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: buff.ly/3mV1cDo]
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: buff.ly/2L1BOhO]
Read 4 tweets
Massimo Profile picture
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 buff.ly/2YT1Eaq
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 buff.ly/2G0UCYG
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 buff.ly/2KdpXg4
Read 6 tweets

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