Skip to main content

No. 3's Second Birthday!!!



Today is No. 3’s second birthday!  All of our kids were homebirths.  No. 3 though, was our only solo delivery.  We called the midwives at the same time we always had, as contraction began, but No. 3 was ready to go.  She arrived five minutes before the midwives.  As I scooped her up, she was fascinated with chewing on her foot.  What I really needed her to do though was breathe.  She couldn’t have been less interested.  Consequently, I took her foot away from her mouth.  She very calmly, put it back in, and got back to work.  We did this two more times before she became frustrated enough that she let out a yell at the offending foot and dad.  Hence, No. 3 took her first breaths in the world!

Since then, she’s been a little cuddle monkey.  Of our kids, No. 3 seems to emit the most endorphins/pheromones.  She nuzzled everyone she met when she was little.  They’d gasp, and then they’d start to cry; without fail.  No. 3 is our tears of joy inducer.  It still happens occasionally.  Someone will meet No. 3, and by the end of the day, they’ll be happily weeping for one reason or another.

She’s been fiercely independent since she learned to walk.  Boarding buses or trains, she insists on getting into her own seat just like her older sibs.  When she was shorter, grabbing on to either side of a seat, she’d use her upper body strength—the kind only toddlers and gymnasts seem to possess—to literally pull her entire weight up and into the chair.  Now, that she’s grown a little more, she attacks the problem a different way.  She’ll fold into the seat from the waste up, and then swing her feet up and under her torso till she’s sitting on the seat backwards on her knees.  She has to turn around, but she’s so proud that she’s got it.

Which reminds me.  In addition to endorphins, she’s in possession of copious amounts of pride, and I for one think she should be.  Each of her new achievement is celebrated with a giant grin, clapping hands, and a little dance.  For the last two weeks she’s been psyched that she’s finally in a soccer practice all he own instead of just tagging along to the sibs’ class.  She’s quickly picking up ball handling.  As we navigated Chinatown this weekend, she’d find an interesting piece of garbage, and kick it up the street, all the while absentmindedly dodging the elbow to elbow people making their way along the sidewalk.

And did I mention her bravery, and aplomb?  Plowing through the crowds on Saturday, she wanted to be carried some of the time, but as soon as something interested her, she was down and rooting.  With me serving as a six foot tall safety flag standing right behind her for the more than occasional person who was in a hurry, and didn’t think to look down, No. 3 made her way through the crowd;  stopping when she needed to; waiting for an opening; and then threading through with me close behind.  Her sibs, having learned this game long ago were ten to twenty feet in front of us, checking out the parts of the street, shops, and people that interested them.

All in all it’s been a grand two years since No. 3 came into the world gnawing on her foot, and we’re all looking forward to what comes next!

Comments

Popular posts from this blog

Cool Math Tricks: Deriving the Divergence, (Del or Nabla) into New (Cylindrical) Coordinate Systems

The following is a pretty lengthy procedure, but converting the divergence, (nabla, del) operator between coordinate systems comes up pretty often. While there are tables for converting between common coordinate systems, there seem to be fewer explanations of the procedure for deriving the conversion, so here goes!

What do we actually want?

To convert the Cartesian nabla



to the nabla for another coordinate system, say… cylindrical coordinates.



What we’ll need:

1. The Cartesian Nabla:



2. A set of equations relating the Cartesian coordinates to cylindrical coordinates:



3. A set of equations relating the Cartesian basis vectors to the basis vectors of the new coordinate system:



How to do it:

Use the chain rule for differentiation to convert the derivatives with respect to the Cartesian variables to derivatives with respect to the cylindrical variables.

The chain rule can be used to convert a differential operator in terms of one variable into a series of differential operators in terms of othe…

Lab Book 2014_07_10 More NaI Characterization

Summary: Much more plunking around with the NaI detector and sources today.  A Pb shield was built to eliminate cosmic ray muons as well as potassium 40 radiation from the concreted building.  The spectra are much cleaner, but still don't have the count rates or distinctive peaks that are expected.
New to the experiment?  Scroll to the bottom to see background and get caught up.
Lab Book Threshold for the QVT is currently set at -1.49 volts.  Remember to divide this by 100 to get the actual threshold voltage. A new spectrum recording the lines of all three sources, Cs 137, Co 60, and Sr 90, was started at approximately 10:55. Took data for about an hour.
Started the Cs 137 only spectrum at about 11:55 AM

Here’s the no-source background from yesterday
In comparison, here’s the 3 source spectrum from this morning.

The three source spectrum shows peak structure not exhibited by the background alone. I forgot to take scope pictures of the Cs137 run. I do however, have the printout, and…

Unschooling Math Jams: Squaring Numbers in their own Base

Some of the most fun I have working on math with seven year-old No. 1 is discovering new things about math myself.  Last week, we discovered that square of any number in its own base is 100!  Pretty cool!  As usual we figured it out by talking rather than by writing things down, and as usual it was sheer happenstance that we figured it out at all.  Here’s how it went.

I've really been looking forward to working through multiplication ala binary numbers with seven year-old No. 1.  She kind of beat me to the punch though: in the last few weeks she's been learning her multiplication tables in base 10 on her own.  This became apparent when five year-old No. 2 decided he wanted to do some 'schoolwork' a few days back.

"I can sing that song... about the letters? all by myself now!"  2 meant the alphabet song.  His attitude towards academics is the ultimate in not retaining unnecessary facts, not even the name of the song :)

After 2 had worked his way through the so…