Thursday, February 25, 2010

Orbitals

Here's a cute orbital dynamics simulator:

http://phet.colorado.edu/sims/my-solar-system/my-solar-system_en.html

Try some of the presets, or make your own system. Ain't gravity fun?!

I just wish you could specify the periods and eccentricities, rather than the initial velocity vectors...

h/t: Quinn

Sunday, February 21, 2010

The art of the joke

Owen: "Hey, Daddy, why did the chicken cross the road?"

Me: "I don't know, why did the chic--"

Owen:
"With cars on it!"

Me:
"Wow, that was funny..."

Owen:
"But it had shorts on its head and then fruit on its head and then the chicken fell in the gutter. Isn't that a funny story?"

Me:
"..."

Saturday, February 20, 2010

Saturday, February 13, 2010

Conservation of energy and momentum

An old ad, but one of my favorites. The song is by Jose Gonzales.



Elisa will love how they spell colour at the end... :)

Thursday, February 11, 2010

before & after

at 18 months - 2 very different & equally wonderful boys




making our own pizzas & 
eating most of the toppings before they make it onto the pizza!


dining room chandelier.... (thanks A&B for all your help!)




Wednesday, February 10, 2010

The "thing"

An old Arab has been living close to New York City for more than 40
years. He would love to plant potatoes in his garden, but he is alone,
old and weak. His son is in college in Paris, so the old man sends him
an e-mail and explains the problem:

Beloved son, I am very sad, because I can't plant potatoes in my
garden. I am sure, if only you were here; you'd help me and dig up the
garden for me. I Love you.

Father

The following day, the old man receives a response e-mail from his son:

Beloved father, please don't touch the garden. It's there that I have
hidden the 'thing'. I love you too.

Ahmed


At 4pm the next day, the US Army, the Marines, the FBI, the CIA and
the Rangers visit the house of the old man, take the whole garden
apart, search every inch, but can't find anything. Disappointed they
leave the house. One day later, the old man receives another e-mail
from his son:

Beloved father, I hope the garden is dug up by now and you can plant
your potatoes. That's all I could do for you from here.

Love,

Ahmed

Tuesday, February 9, 2010

Blast from the past


Here's a fun picture from Owen's undergrad days back at Berkeley. He was okay at classical mechanics. He came into his own later on in Quantum I and II.

Little Poussons

Big thanks to cousin Sarah for getting this video from 1985 to us.
I especially love the pronounced texas-twang in all our voices:



or here

Tuesday, February 2, 2010

home, sick

by erin

Marcus has been battling a nasty cold for the last few days, and yesterday I caught it too. This means our activities today involve trying to recover while, at the same time, harnessing Owen's seemingly boundless energy. During Mar-Mar's nap, we constructed our tallest tower yet.

All this typing has made me tired... think it's time to sleep on the couch while O-man watches Milo & Otis for the 800th time.