Back to Math Basics

Sunday afternoon became more distracting as it approached evening.  Aside from the numbness and tingling which reasserts itself every few minutes, I find it difficult to count stitches and determine multiples of double digit numbers in my head while remembering the end goal of max stitches for that row all while the rest of the family watches a movie or taunts the Rotts into playing boisterously.

At row fifteen, I stopped and took a break for a bit.  I read a few pages in Grand Conspiracy.  I then found a piece of paper to write out the next seven rows numerical stitch pattern.  For example, until row twenty-two, I need to increase each row by adding six stitches evenly spaced around the round.  I wrote the following quick chart to aid in my stitch counting:

Row x2 x3 x4 x5 x6
16 32 48 64 80 96
17 34 51 68 85 102
18 36 54 72 90 108
19 38 57 76 95 114
20 40 60 80 100 120
21 42 63 84 105 126
22 44 66 88 110 132

I made it to row eighteen last night before retiring to bed.

Eighteen Rows or 108 Stitches Around

Eighteen Rows or 108 Stitches Around

Part of the reason I enjoy crocheting, or music (which is tangential I know) has to do with all the finite math involved with the patterns.  And the best part of all, at least when working a circular crochet pattern is the chance to use my favorite mathematical constant.  Stretch your memory back to the days of algebra and geometry and remember the simple formula for determining the circumference of a circle:

Diameter of 10.25 inches

Diameter of 10.25 inches

Can’t remember?  Well, let me remind you using the photo above.  If the diameter of a circle is 10.25 inches, the circumference is the diameter multiplied by the constant pi:

C = dπ

Or, as illustrated above:

C = 10.25 * 3.14159

C =  32.2

I have four more rows of increasing before I crochet a band of a half dozen single crochets (with no increases in stitches).  After that, I start decreasing.  The pattern reduces to a head band circumference of 18.25 inches, which is too small for Rachelle’s inflated ego, er I mean head.  Her cranium has a circumference of over 22 inches.  So I’ll have to do yet more math to determine the proper stopping point during the reduction.

I’ve decided not to take this Brimmed Cap project with me to work today, even though with the vanpool I have over an hour I could be crocheting to and from work.  Mondays (and Fridays) I usually have to tote quite a few things with me (like a week’s worth of lunches and a laptop).  If I don’t finish the cap this evening, I’ll probably take it with me on the commute Tuesday.


About mossjon314159

Avid reader (see my book reviews and ratings here), amateur astronomer and photographer, sporadic crocheter and Rottweiler spoiler.
This entry was posted in Mathematics, Musings and tagged , , , , . Bookmark the permalink.

2 Responses to Back to Math Basics

  1. Pingback: Algorithmic Crochet | Misty Midwest Mossiness

  2. Pingback: Algorithmic Crochet | Misty Midwest Mossiness

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