Massimo

@Rainmaker1973

Astronomy, astronautics, meteorology, physics. columnist. Engineer, trying to build the big picture of via pics, videos & links

Italy, North by Northwest
Joined August 2010

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  1. Pinned Tweet
    1 Dec 2019
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  2. 14 minutes ago

    Artist Jonty Hurwitz creates captibvating anamorphic sculptures that can only be seen in their own reflections or along a precise line of sight. He scans a three-dimensional object, then uses computational software to come up with new physical forms

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  3. 41 minutes ago

    The equinox clock is a dynamic moving timepiece which gradually changes shape throughout the day |

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  4. 1 hour ago

    Her feet are in bindings, but holding an entire body weight up horizontally as a rigid body is actually a huge physics and physical challenge [source and full video: ]

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  5. Retweeted
    4 hours ago

    When our eyes move, the brain purposely blocks our vision. This is the reason why you can’t see the motion of your eyes in a mirror and also why we spend several minutes a day effectively blind, but totally unaware of it [gif: ]

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  6. Retweeted
    3 hours ago

    These formations commonly known as ‘devil’s corkscrews’, are the remnants of spiral burrows dug with teeth by palaeocastors, ancient land beavers who lived about 20 million years ago

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  7. Retweeted
    2 hours ago

    It's not frequent, but it can happen: humpback whales can breach the surface among the docks of a marina

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  8. 2 hours ago

    Radon 220 is an unstable atom, and is releasing alpha particles (2proton 2 neutron) to try and stabilize itself. The white trails in the image are the alpha particles shooting out of the radon and leaving a mark on the water [more: ]

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  9. 2 hours ago

    It's not frequent, but it can happen: humpback whales can breach the surface among the docks of a marina

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  10. Retweeted
    5 hours ago

    On display at the 2019 Cornel Cup was a UAV with a very unique design. It has the familiar layout of a quadcopter, but all four spinning blades have been replaced with flapping wings

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  11. 3 hours ago

    The sound of two thousand metal spheres falling and bouncing through a plastic labyrinth creates a power spectrum of sound waves with all frequencies at equal intensity, creating the sound we often encounter from many random processes (partly at 240 fps)

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  12. 3 hours ago

    These formations commonly known as ‘devil’s corkscrews’, are the remnants of spiral burrows dug with teeth by palaeocastors, ancient land beavers who lived about 20 million years ago

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  13. 4 hours ago

    When our eyes move, the brain purposely blocks our vision. This is the reason why you can’t see the motion of your eyes in a mirror and also why we spend several minutes a day effectively blind, but totally unaware of it [gif: ]

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  14. 4 hours ago

    Arithmetic billiards determine the least common multiple and the greatest common divisor of two natural numbers. The least common multiple is the number of unit squares crossed by the arithmetic billiard path or the length of the path divided by √2

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  15. 5 hours ago

    Both Sphalerite ((Zn, Fe)S) and [] and Pyrite (FeS₂) [ ] crystallize in the cubic crystal system, so mineral specimen with both, have a pretty regular appearance [source and full video: ]

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  16. 5 hours ago

    On display at the 2019 Cornel Cup was a UAV with a very unique design. It has the familiar layout of a quadcopter, but all four spinning blades have been replaced with flapping wings

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  17. 6 hours ago

    Bagheera kiplingi is a species of jumping spider found in Central America., notable for its peculiar diet, which is mostly herbivorous. No other known species of spider has such a thoroughly herbivorous diet

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  18. Retweeted
    19 hours ago

    Cut a paper circle, fold it so that the circumference falls on a fixed point. Repeat. This is how you paper-fold an ellipse [source: ]

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  19. Retweeted
    Feb 2

    How a non-Newtonian fluid like honey behaves in space

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  20. Retweeted
    20 hours ago

    One of the most iconic pictures of the Space Shuttle: this is the Endeavour atop its Boeing 747, flying over Mojave desert to in December 2008

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  21. Retweeted
    21 hours ago

    This panorama was captured by ’s Mast Camera, or Mastcam, which took the images in November 2017, during a period of clear skies just before the winter solstice in Mars’ northern hemisphere

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