Prosthetic LIghts

multi colored lights in a dark room as if plotted on a graph...but as a long exposure photo

While working with a prosthetist (someone that designs, creates and fits artificial limbs) to record and analyze the behavior and performance of of amputees wearing prosthetics, we discovered that we could do more than just capture the information with gyroscopes and accelerometers… we could display it in real time. But that was too much for the human eye to handle. Using a programmable LED strip we were able to strobe different colors representing different axes and motions. And by taking a long exposure photograph in an otherwise dark room we were able to capture rather striking images of the exact data we were seeking to plot. It was real life data visualization.

Hot Air Balloon

Isabel had to make a hot air balloon for class. She made hers a little larger than average. She also has a spill line attached to the top of the envelope to flip it upside down and release all the hot air so it doesn’t fly away.

Four 9×15 panels attached to a top 3×3 square (to create 9×9 cube). It was too windy at a mere 6 mph to attempt to inflate today.

The “Total Pratt Knot” (knecktie)

I dub thee: The Total Pratt Knot


Since I consider this is closer in affect to the Pratt than the Half-Windsor why should it be called the co-half-windsor
Notice how my 1337 photoshop skills

The co-half-windsor ( Li Ro Ci Ro Li Co T ) is the cousin to the Half-Windsor knot ( Li Ro Ci Lo Ri Co T ). In swapping two moves it remains similar in that it is tied right side out and absurdly considered “mathematically” asymmetrical (same number of L and R moves), but different in that it is visually symmetrical, self-releasing… and completely dismissed everywhere. I believe the visual symmetry is achieved through the obvious symmetry around the first Centring move – Li Ro Ci Ro Li  – nearest the center are Ro moves on either side, followed by Li moves. Note that all knots end with “Co T” (some do have extra loops and are written “Co T T” or even “Co T T T” ) and so that doesn’t affect symmetry (except that it actually does  – the final Co creates visually balancing “ear” on the left (skinny) side of this knot).  Also interesting (and wrong) is that Fink considers that the half windsor to have a balance of 0 (number of times the running part switches from clockwise to counterclockwise or vice versa) and the co-half-windsor to be 1 – this is clearly backwards as the co-half-windsor only moves counterclockwise and never reverses.  

Sadly there are no pictures or diagrams of the co-half-windsor and we have to settle for diagrams of the half-windsor – which in my opinion is an entirely different knot:

image.png

The capital letter denotes where the running end moves to –  Left, Right, or Center (between the both the running end standing parts hanging down from the neck) .  The lower case letter denotes if the movement goes Into (i) the page or Out (o) the page.  That’s part is just dumb – it’s backwards unless your are looking at a book. Over (o) or Under (u)  would make more sense to me – works if it’s on a page, in the mirror, or… wait for it… hanging around your neck! Rewriting the co-half-windsor with over or under notation and putting the Over/Under instruction first (as you might speak it) looks like  this: 

oL uR oC uR oL uC T

And would be verbally stated as:

First move the fat part of the tie OVER the LEFT part (oL)

Next move the fat part of the tie UNDER the RIGHT part (uL)

Next move the fat part of the tie OVER the CENTER of the knot (oC)

Next move the fat part of the tie UNDER the RIGHT part (uR)

Next move the fat part of the tie OVER the LEFT part (oL)

Next move the fat part of the tie UNDER the CENTER

Last move the fat part of the tie THROUGH the loop

I often think this might be similar to the “Pratt Knot” / “Shelby Knot” ( Lo Ci Lo Ri Co T ) or the “Nicky Knot” ( Lo Ci Ro Li Co T ).  It is definitely not like the four-in-hand knot ( Li Ro Li Co T ). 

This cousin of the half-Windsor has the advantage of self-releasing (unknotting) when the thin end is pulled out through the knot.

http://www.tcm.phy.cam.ac.uk/~tmf20/tieknots.shtml

7     Li Ro Ci Lo Ri Co T     half-Windsor

If a man claims to know a second knot in addition to the four-in-hand, it is likely to be the half-Windsor, the third of the four classic tie knots. This symmetric knot is medium-sized, with the silhouette of an equilateral triangle. It can satisfactorily be worn with collars of most sizes and spreads. Although the name of the half-Windsor suggests it is derived from the Windsor, there is little direct evidence for this claim. Moreover, the half-Windsor is not half the size of the Windsor, but rather three-quarters.

Keep in mind that the half-Windsor is sometimes a victim of the erroneous naming convention used to describe both it and the Windsor, calling them the Windsor and double-Windsor. There is no such thing as a double Windsor, and the Windsor should be used to refer to knot 31 only.

http://www.tcm.phy.cam.ac.uk/~tmf20/tieknots.shtml

COMPREHENSIVE LIST OF KNOTS

Here is a list of all possible knots, regardless of their aesthetic value. The columns are as follows:

  • Number is the number of the knot, and, along with any subscripts or superscripts, a unique identifier (e.g., FM7 is the half-Windsor, where FM refers to the Fink-Mao notation). Knots are ordered first by size, then by the number of centre moves C, then by symmetry s, then by balance b.
  • Size is the number of moves, not including T. Higher values correspond to bigger knots.
  • Centres is the number of centre moves C. Higher values correspond to broader knots.
  • Sequence   The instructions for tying the knot, using the notation described at the top of this page.
  • Symmetry (s) is the absolute value of the difference between the number of R and L moves.
  • Balance (b) is the number of times the winding of the wide blade switches from clockwise to counter-clockwise, or vice-versa.
  • Knotted status (k)   Whether, when the tie is removed over the head and the thin end pulled out of the knot, a knot remains (y) or does not (n). If a knot remains, it is said to be not self-releasing; if no knot remains, it is said to be self-releasing.
  • Name   Standard name of the knot.
  • 3on   The subscript on is short for Onassis, and it indicates his particular style of bring the wide blade behind and through the center after tying a four-in-hand. This variation can be applied to any knot but the results are all much the same.
  • 32, 62, etc.   If a knot ends with two Ts, it is subscripted 2; if three Ts, it is subscripted 3; and so on.
  • 32r, etc.   The superscript r means the tie is worn in reverse, that is, back-to-front. While this is of course possible for any knot, with some it gives unusual and pleasant results. The tie itself should be reversed before tying.
No.    SizeCen.  Sequences    b    k      Name
131Lo Ri Co T00yOriental
 
241Li Ro Li Co T11nfour-in-hand
2on41Li Ro Li Co T Ri Co11Onassis
 
351Lo Ri Lo Ri Co T02yKelvin
3251Lo Ri Lo Ri Co T T02cross Kelvin
32r51Lo Ri Lo Ri Co T T02diagonal
452Lo Ci Ro Li Co T10nNicky
552Lo Ci Lo Ri Co T11yPratt
 
661Li Ro Li Ro Li Co T13nVictoria
6261Li Ro Li Ro Li Co T T13cross Victoria
762Li Ro Ci Lo Ri Co T00yhalf-Windsor
862Li Ro Ci Ro Li Co T01nco-half-Windsor
962Li Co Ri Lo Ri Co T01y
1062Li Co Li Ro Li Co T22n
 
1171Lo Ri Lo Ri Lo Ri Co T04y
11271Lo Ri Lo Ri Lo Ri Co T T04
11371Lo Ri Lo Ri Lo Ri Co T T T04
1272Lo Ri Lo Ci Ro Li Co T11nSt Andrew
1372Lo Ri Co Li Ro Li Co T11n
1472Lo Ri Lo Ci Lo Ri Co T12yco-St Andrew
1572Lo Ri Co Ri Lo Ri Co T12y
1672Lo Ci Ro Li Ro Li Co T12n
16272Lo Ci Ro Li Ro Li Co T T12
1772Lo Ci Lo Ri Lo Ri Co T13y
17272Lo Ci Lo Ri Lo Ri Co T T13
1873Lo Ci Ro Ci Lo Ri Co T01yPlattsburgh
1973Lo Ci Ro Ci Ro Li Co T02nco-Plattsburgh
2073Lo Ci Lo Ci Ro Li Co T22n
2173Lo Ci Lo Ci Lo Ri Co T23y
 
2281Li Ro Li Ro Li Ro Li Co T15n
22281Li Ro Li Ro Li Ro Li Co T T15
22381Li Ro Li Ro Li Ro Li Co T T T15
2382Li Ro Li Co Ri Lo Ri Co T02yCavendish
2482Li Ro Li Ro Ci Lo Ri Co T02y
2582Li Ro Ci Lo Ri Lo Ri Co T02y
25282Li Ro Ci Lo Ri Lo Ri Co T T02Christensen
2682Li Ro Li Ro Ci Ro Li Co T03n
2782Li Ro Ci Ro Li Ro Li Co T03n
27282Li Ro Ci Ro Li Ro Li Co T T03co-Christensen
2882Li Co Ri Lo Ri Lo Ri Co T03y
28282Li Co Ri Lo Ri Lo Ri Co T T03
2982Li Ro Li Co Li Ro Li Co T23n
3082Li Co Li Ro Li Ro Li Co T24n
30282Li Co Li Ro Li Ro Li Co T T24
3183Li Co Ri Lo Ci Ro Li Co T10nWindsor
3283Li Co Li Ro Ci Lo Ri Co T11yco-Windsor 1
3383Li Co Ri Lo Ci Lo Ri Co T11yco-Windsor 2
3483Li Ro Ci Lo Ci Ro Li Co T11n
3583Li Co Li Ro Ci Ro Li Co T12nco-Windsor 3
3682Li Ro Ci Ro Ci Lo Ri Co T12y
3783Li Ro Ci Lo Ci Lo Ri Co T12y
3883Li Co Ri Co Li Ro Li Co T12n
3983Li Ro Ci Ro Ci Ro Li Co T13n
4083Li Co Li Co Ri Lo Ri Co T13y
4183Li Co Ri Co Ri Lo Ri Co T13y
4283Li Co Li Co Li Ro Li Co T34n
 
4391Lo Ri Lo Ri Lo Ri Lo Ri Co T06y
43291Lo Ri Lo Ri Lo Ri Lo Ri Co T T06
43391Lo Ri Lo Ri Lo Ri Lo Ri Co T T T06
43491Lo Ri Lo Ri Lo Ri Lo Ri Co T T T T06
4492Lo Ri Lo Ri Co Li Ro Li Co T13nGranchester
4592Lo Ri Lo Ci Ro Li Ro Li Co T13n
45292Lo Ri Lo Ci Ro Li Ro Li Co T T13
4692Lo Ri Lo Ri Lo Ci Ro Li Co T13n
4792Lo Ri Co Li Ro Li Ro Li Co T13n
47292Lo Ri Co Li Ro Li Ro Li Co T T13
4892Lo Ri Lo Ri Co Ri Lo Ri Co T14yco-Grantchester
4992Lo Ri Lo Ci Lo Ri Lo Ri Co T14y
49292Lo Ri Lo Ci Lo Ri Lo Ri Co T T14
5092Lo Ri Lo Ri Lo Ci Lo Ri Co T14y
5192Lo Ri Co Ri Lo Ri Lo Ri Co T14y
51292Lo Ri Co Ri Lo Ri Lo Ri Co T T14
5292Lo Ci Ro Li Ro Li Ro Li Co T14n
52292Lo Ci Ro Li Ro Li Ro Li Co T T14
52392Lo Ci Ro Li Ro Li Ro Li Co T T T14
5392Lo Ci Lo Ri Lo Ri Lo Ri Co T15y
53292Lo Ci Lo Ri Lo Ri Lo Ri Co T T15
53392Lo Ci Lo Ri Lo Ri Lo Ri Co T T T15
5493Lo Ri Co Li Ro Ci Lo Ri Co T00yHanover
5593Lo Ri Co Ri Lo Ci Ro Li Co T01nco-Hanover 1
5693Lo Ri Co Li Ro Ci Ro Li Co T01nco-Hanover 2
5793Lo Ci Ro Li Ro Ci Lo Ri Co T01y
5893Lo Ci Ro Li Co Ri Lo Ri Co T01yco-Hanover 3
5993Lo Ri Co Ri Lo Ci Lo Ri Co T02y
6093Lo Ci Ro Li Ro Ci Ro Li Co T02n
6193Lo Ri Lo Ci Ro Ci Lo Ri Co T02y
6293Lo Ri Co Li Co Ri Lo Ri Co T02y
6393Lo Ri Lo Ci Ro Ci Ro Li Co T03n
6493Lo Ri Co Ri Co Li Ro Li Co T03n
6593Lo Ci Lo Ri Co Ri Lo Ri Co T03y
6693Lo Ci Ro Ci Lo Ri Lo Ri Co T03y
66293Lo Ci Ro Ci Lo Ri Lo Ri Co T T03
6793Lo Ci Ro Ci Ro Li Ro Li Co T04n
67293Lo Ci Ro Ci Ro Li Ro Li Co T T04
6893Lo Ci Lo Ri Lo Ci Ro Li Co T22n
6993Lo Ci Lo Ri Co Li Ro Li Co T22n
7093Lo Ci Ro Li Co Li Ro Li Co T22n
7193Lo Ci Lo Ri Lo Ci Lo Ri Co T23y
7293Lo Ri Lo Ci Lo Ci Ro Li Co T23n
7393Lo Ri Co Li Co Li Ro Li Co T23n
7493Lo Ri Lo Ci Lo Ci Lo Ri Co T24y
7593Lo Ri Co Ri Co Ri Lo Ri Co T24y
7693Lo Ci Lo Ci Ro Li Ro Li Co T24n
76293Lo Ci Lo Ci Ro Li Ro Li Co T T24
7793Lo Ci Lo Ci Lo Ri Lo Ri Co T25y
77293Lo Ci Lo Ci Lo Ri Lo Ri Co T T25
7894Lo Ci Ro Ci Lo Ci Ro Li Co T12nBalthus
7994Lo Ci Lo Ci Ro Ci Lo Ri Co T13y
8094Lo Ci Ro Ci Ro Ci Lo Ri Co T13y
8194Lo Ci Ro Ci Lo Ci Lo Ri Co T13yco-Balthus
8294Lo Ci Lo Ci Ro Ci Ro Li Co T14n
8394Lo Ci Ro Ci Ro Ci Ro Li Co T14n
8494Lo Ci Lo Ci Lo Ci Ro Li Co T34n
8594Lo Ci Lo Ci Lo Ci Lo Ri Co T35y

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Up and Under

Brian went back up to the University of North Georgia to play a match agains Kennesaw State University. So he got to play with guys he’s practiced with recently (UNG) and guys that he played with last year (KSU). We was wearing the #15 and played fullback for a good part of the game, switch with his coach, Cam wearing the #10, on defense when kicking might be a thing (since Cam is the better kicker). But he also played a bit of 9 and generally went where needed.

This was a nice little up and under kick. He wasn’t set far back, and the defender is on top of his just as soon as he gets the ball. But he manages to get a short high kick away. The he has to fight and weave his way through a crowd to get under the ball. He’s got just a bit of a bobble in contact as he makes the catch… but breaks through and runs in his own kick for the try. Nicely done!

Soldering

When it comes to electronics, soldering is essential. You can only go so far until you have mastered learned how to solder at lease little. More essential than a screw driver, is the soldering iron. Remember: If it smells like chicken, you’re holding it wrong.

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