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Han Broekman
Lived in Wageningen, Netherlands
242 followers|26,640 views
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Han Broekman

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http://earth.nullschool.net/#current/wind/surface/level/orthographic=-90.23,46.58,406
Look where its is windy.  You can zoom, scroll, and instantly see real time winds.
an animated map of global wind and weather
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This resort is just over an hour's drive from NYC
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+Maarten Broekman This looks cool !!!
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Short Circuit!  Number 5 is alive!
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Absolutely gorgeous!
 
Making the Pentafleur lamp

The main lamp body has 62 faces: 12 pentagons, 20 triangles, and 30 squares. If you look carefully, you'll see that three additional polyhedral shapes are revealed by the pattern of the kumiko (the latticework frames to which the paper is glued):
1) The icosahedron, which is made up of 20 triangles.
2) The dodecahedron, which is made up of 12 pentagons.
3) And the Catalan deltoidal hexecontahedron, which is the dual of the rhombicosidodecahedron and is made up of 60 kite-shaped faces. (Each vertex of the dual touches a face of the original.)

Ingredients:
285 pieces of maple
705 pieces of mahogany
705 dowels
296 pieces of washi (shoji paper)
470 neodymium disc magnets
77 wood screws
23 lamp hardware parts
1 dozen audiobooks
4 pinches of patience
2 jiggers of stubbornness
1 dash of insanity

Recipe:
1) Calculate the dihedral and miter angles
2) Build cutting, drilling, and gluing jigs
3) Plane maple planks to width
4) Rip maple with table saw and bandsaw (for the dihedral angles) to create 100' of frame stock, as well as the five lamp stand legs
5) Rout 100' of rabbets, 55' of round-overs, and one 5' groove (to run the cord in one leg)
6) Sand with power palm sander
7) Make 2,000+ cuts with power and hand miter saws
8) Make fine angle adjustments with a spindle sander and fine length adjustments with a disc sander
9) Glue up 1,000+ joints using clamps and jigs
10) Drill 1,200+ holes using jigs and freehand
11) Glue in 1,100+ dowels and magnets
12) Sand with a drum sander and by hand
13) Add a coat of finish
14) Add two more coats of finish, hand sanding between each
15) Assemble
16) Plug in
17) Light!

If you're interested to read more about the making of the Pentafleur, visit http://goo.gl/lm8bfV

Enjoy!
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Han Broekman

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I use my iPhone 5S with the AnalogDigital app from Maarten Baas as a digital clock.  Usually this is too bright.  I suggest that you adapt your idea to a charging station/clock for an iPhone so I can make it prettier on my night table.
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New USAF 'Space Fence' to Track Space Junk by 2019

The Air Force is expected to award a contract in the next few weeks for a “Space Fence.” The fence isn’t really a fence. It’s a radar system that projects a wall of energy into space to track all the bits of junk floating around.

http://spacewatchtower.blogspot.com/2014/05/new-usaf-space-fence-to-track-space.html

2014: 75th Year of Pittsburgh's Buhl Planetarium
A computer image generated by NASA shows objects, or “space junk,” orbiting Earth. A new “Space Fence” — a radar system that projects a wall of energy into space to track space debris — could potentially help protect astronau...
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I thought Gravity was a good movie, but I found the extras, which discussed the space debris challenge we face, even more interesting.
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L2 and the James Webb Space Telescope

The James Webb Space Telescope (red) will orbit the Sun at a special gravity island called L2 (Lagrange Point 2).  L2 is located 1,519,000 km beyond the Earth (blue).

Ordinarily, being further from the Sun would mean that a spacecraft would orbit the Sun more slowly, and it would quickly fall behind the Earth. However, the spacecraft feels the combined gravity of the Sun and Earth, and a stronger pull of gravity means a faster orbit. If the distance is just right, the increased orbit speed causes it to match the Earth’s orbit speed, and it stays permanently in the Earth’s shadow.

For those who are interested in how location of the L2 point is computed, see here: http://www.maththoughts.com/blog/2011/l2-what-is-it-and-where-is-it/
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L2 and the James Webb Space Telescope

The James Webb Space Telescope (red) will orbit the Sun at a special gravity island called L2 (Lagrange Point 2).  L2 is located 1,519,000 km beyond the Earth (blue).

Ordinarily, being further from the Sun would mean that a spacecraft would orbit the Sun more slowly, and it would quickly fall behind the Earth. However, the spacecraft feels the combined gravity of the Sun and Earth, and a stronger pull of gravity means a faster orbit. If the distance is just right, the increased orbit speed causes it to match the Earth’s orbit speed, and it stays permanently in the Earth’s shadow.

For those who are interested in how location of the L2 point is computed, see here: http://www.maththoughts.com/blog/2011/l2-what-is-it-and-where-is-it/
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People
In his circles
177 people
Have him in circles
242 people
David Rosenberg's profile photo
Duane Kriebel's profile photo
Tony Caldwell's profile photo
Barbara Addon's profile photo
Nick Roulleau's profile photo
Dexter Tillery's profile photo
youssry ahmed's profile photo
Shannon Mothershed's profile photo
Bill Mothershed's profile photo
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Wageningen, Netherlands - Utrecht, Netherlands - Cambridge, MA - Queens, NY - Floral Park, NY - Fair Lawn, NJ
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Introduction
I retired from a 35 year job researching mechanisms of diseases like stroke and heart disease.  I strive to become a more proficient woodworker.
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