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Jan Jannink
Works at Camiolog
Attended College de Villamont
Lives in S.F. Bay Area, U.S.A.
303 followers|82,450 views
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Jan Jannink

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Sweet video from +Don Montague and his latest design!
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I made some improvements in the last month since my first giants ever on high bar.  This time I only needed help on the cast to swing through, afterwards I was under my own power!  Thanks to +Volker Kuebler , I've learned so much, and +Sergey Brin for inspiring my goal to achieve this.
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Volker Kuebler's profile photoAlex Lapidus's profile photo
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Terrific!
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Jan Jannink

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A 4 dimensional Valentine!
 
enjoy this beautiful & very realistic animated projection in 3D of 2 intertwining rings of the 4-dimensional 120-cell (each ring has 10 cells which are regular dodecahedra)

[the 120-cell can be partitioned into 12 disjoint 10-cell great circle rings, forming a discrete/quantized Hopf fibration. Starting with one 10-cell ring, one can place another ring alongside it that spirals around the original ring one complete revolution in ten cells. Five such 10-cell rings can be placed adjacent to the original 10-cell ring. Although the outer rings "spiral" around the inner ring (and each other), they actually have no helical torsion. They are all equivalent. The spiraling is a result of the 3-sphere curvature. The inner ring and the five outer rings now form a six ring, 60-cell solid torus. One can continue adding 10-cell rings adjacent to the previous ones, but it's more instructive to construct a second torus, disjoint from the one above, from the remaining 60 cells, that interlocks with the first. The 120-cell, like the 3-sphere, is the union of these two (Clifford) tori. If the center ring of the first torus is a meridian great circle as defined above, the center ring of the second torus is the equatorial great circle that is centered on the meridian circle. Also note that the spiraling shell of 50 cells around a center ring can be either left handed or right handed. It's just a matter of partitioning the cells in the shell differently, i.e. picking another set of disjoint great circles.]
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My first giants ever on high bar!  Not bad for a 50+ year old guy...  Thanks to +Volker Kuebler for the continual encouragement these past 2 years.
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+Julien Basch Your comment brightens my day! Thanks, and so glad to hear from you.
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Handspring!
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President Obama sent a videotaped message and Secretary of State John Kerry spoke at the Our Ocean conference in Chile.
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Have him in circles
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Jan Jannink

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I can do it all under my own power now, including the cast! I didn't really believe I'd get there, and now I can't wait until the next time I get to try again.
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Alex Lapidus's profile photoJan Jannink's profile photoVolker Kuebler's profile photo
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👍  a previous set of giants of yours that day were actually even better :)
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Extreme Diving : it gets exciting at the 2 minute mark!
https://vimeo.com/76684408
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This morning I introduced my twins to the planets, and from 6:10 to 6:40 we watched Mercury, Venus, Saturn, Mars and Jupiter (in that order in the sky -- as per this chart from EarthSky.org). All are visible to the naked eye, but binoculars help for Mars and Mercury. My next project is to science the crap out of entrepreneurship. I'll keep you posted!
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worth being awake at the wee small hours for :)
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a great article about my favorite blog!
Going deep with the founders of Wait But Why, who show that thoughtful, long-form content is king.
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I loved their article on AI and the odds of end of the world...
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Cool shot!
 
Aurora in Kvaløya, Tromsø, Norway
Anne: "The coldest day this winter gave us us an evening with clear sky and some beautiful auroras. The show was worth my cold toes. This panorama consists of eight photos. Nikon D610, Nikkor 14-24, f 2.8, ISO 3200, 10 seconds"

Credit: Anne Birgitte Fyhn
Date: January 7, 2016 

#Astronomy #Space #Science #Aurora #Borealis #NorthernLights #Skywatching #Astrophotography #Panorama #Art #STEM #Education #Earth #Kvaløya #Tromsø #Norway #Norge 
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Jan Jannink's profile photoLinda Villers's profile photoAlex Lapidus's profile photo
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Maybe you'll have to join us on our next voyage North :-)
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Congrats to +Françoise Beaufays  and the rest of the speech team for this very brilliant work.
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People
Have him in circles
303 people
Robert Dorsey's profile photo
SK Malik's profile photo
Nish Marel's profile photo
Chandu Thota's profile photo
Naveen Koorakula's profile photo
Luciano Polenta's profile photo
Wen Duan's profile photo
Justin Boyd's profile photo
Barry Eisler's profile photo
Work
Occupation
Engineer, Computer Scientist
Employment
  • Camiolog
    present
    something something mobile
  • Toshiba
    present
  • I.B.M.
    present
  • Gigabeat
    present
  • Napster
    present
  • imeem
    present
  • Let's Maybe
    cofounder, 2015 - present
    daily wishlist
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
S.F. Bay Area, U.S.A.
Previously
Katubue, Democratic Republic of the Congo - Lausanne, Switzerland - Tokyo, Japan - West Newton, MA
Story
Tagline
My "Vanilla" Persona
Introduction
In my quest to grow up I have started eating soup religiously.  No news on whether it has worked yet.
Education
  • College de Villamont
  • Gymnase du Belvedere
  • Georgetown University
Basic Information
Gender
Male