My 21st Birthday

My 21st Birthday This is Anna Ho, reporting live from her transition to being 21 years old. (Sidenote: a fun consequence of having a Halloween birthday is that whenever you go to the doctors office and state your birth date, the nurse/doctor/receptionist says WOW!!! YOURE A HALLOWEEN BABY?? SOS MY (sister/brother/cousin/friend/aunt/nephew/arch nemesis/husband/estranged son-in-law/daughter/stepson). Everyone seems to know one Halloween baby.) 31 October 2013 9:10am My Bed Wake up, open computer. Facebook notifications up the wazoo. 7:13pm My Floor I went out to lunch at a Japanese restaurant with Cam 13. Om nom nom: The staff got wind that it was my birthday, so this arrived after the check: After lunch, I had Pistol PE class. Mike Conti (the instructor, and author of this) gave us a talk on gun safety. After Pistol, I booked it over to Harvard Square, where Davie 12 and I went to an exhibit about using toys to communicate  basic science concepts. The exhibit took up one room, and we were the only people there I liked that, because it felt like I had my own set of toys that I could play with at my leisure. Can anyone PLEASE explain to me how this works? Another highlight: More science: And some shenanigans: 2am My Room At around 11:50pm, Sarah 17 knocked on my door to give me a tour of French House (because I need one after living here for three years). She took me to the Maisonette, then back to my room, then to the kitchen, where people were waiting in the dark As I rounded the corner, someone hopped out and stuck a hat on my head. French House sang Joyeux Anniversaire, and dark chocolate lava cake was enjoyed by all. Afterwards, Sophie 14 led me to her room, where the other 2014s were waiting with a bottle of wine. We toasted, and I had a small (LEGAL!) drink. Thank you for all the birthday wishes, everyone! 3 30 October 2013 8:40am The French House kitchen Pre-exam breakfast of champions: a piece of toast, a bowl of chocolate frozen yoghurt, and a banana. 10am 26-100 7.012 (Intro Bio) exam. It was long, and thats all I really have to say about it. 11am 4-152 21M.235 (Monteverdi to Mozart) class. We discussed the score of a Bach French suite (No. 5 in G) then listened to the piece. A suite is a collection of dances to listen to, though, not to actually dance to. The No. 5 in G has an allemande, a courante, a sarabande, a gavotte, and a gigue. (Gigue is now one of my favorite French words.) Between each movement, there is a switch in character, and the G major triad is outlined by the first note of each movement. Also, Bach is nothing but contrapuntal. Then, we moved onto a Scarlatti keyboard piece (K. 264 the K number is important because, in my music profs words, I cant tell you how many Sonatas in E there are). For our purposes, this piece represents a shift from the Baroque concept of a keyboard piece (represented by the suite) to a single-movement work. This is the beginning of what we call the sonata form of the late 18th century. Scarlattis piece was intended for courtly entertainment; in contrast, Bachs piece was intended for keyboard pedagogy. Finally, we listened to the Sonata in F Major (Prussian 1) by Bachs son Carl Philipp Emanuel (CPE Bach). The so-called Prussian sonatas were all written for Frederick the Great, who CPE worked for. We listened to a clavichord recording of the piece; at the end, the clavichordist (clavichordist?) played a lovely cadenza. Fun fact: CPEs treatise on keyboard playing was one of the first books devored by a young Hayden, while he taught himself to be a composer. 12:35pm A bench at the intersection of Building 1 and the infinite corridor. I bought a box of salmon/avocado sushi, a bottle of mighty mango Naked juice smoothie, and made camp at one of the busiest places on MIT campus. Im LaTeXing the Quantum II professors handwritten course notes, as part of my quantum rehab program. I like working when there are strangers frantically speedwalking past me; its both energing and non-distracting, because I dont know any of these people. 12:45pm Just kidding. My friend Sam 14 appeared, looking for a place to crank out 20 minutes worth of a pset. I offered him the spot next to me, so now I have company :) 12:50pm I lied about being surrounded by strangers. My friend Davie 12 just appeared, also en route to finding a place to pset. While giving me a very energetic hug, his bike helmet clattered to the ground. He actually picked me up during the hug, which is no mean feat; I hope his back is okay. 12:51pm Back to work. 2:43pm 6-120 8.033 lecture! Transcribing what Prof. Fisher is saying right now: In relativity, were going to use the principle of maximal aging. And this goes back to what we were talking about, about different kinds of time. So were sitting here in 6-120, which well call a lab frame, or Frame S. And we can measure the time it takes for an object to go from spacetime coordinates A to B. Thats the time that we would measure using this clock, watching something roll across the floor. Like if a mouse came out. There used to be a rat that lived here and came waddling out a couple of times a few years ago. I think hes dead now. Now if the rat were relativistic, and had a wristwatch on its neck, it would measure a different time. It would measure its wristwatch time. So remember, this is an absolutely cornerstone idea of relativity: there is something called wristwatch time, proper time, observer time, that is attached to whatever object youre watching move around. And that clock is always at rest with respect to that object. And so our statement of the principle of least time is that this trajectory occurssuch that the wristwatch time from A to B is minimized. 3:01pm Metrics in general relativity are called g. I have a friend whose license plate is GMuNu*that metric refers to flat spacetime. *g^( µ?) 5:26pm The floor of the French House maisonette My sister and her friend and Asra 17 are studying for an 18.701 (Algebra I*) test, with the help of Adam 15. I just got home, after an 45 min-ish Skype chat with an astronomy professor at BU. I had some questions about the astro grad school application process, and he was very helpful. I also passed along my boyfriends message that he gave an excellent talk at the recent DPS conference. *Not the kind of Algebra I youre thinking of. 6:49pm My room This evening, I made a Trader Joes trip and bought the following: a baguette, brie, a bottle of sparkling pink lemonade, and two boxes of strawberries. For a midnight birthday celebration?! you ask. No. I made the Trader Joes run because Im going to spend the next 4-5 hours trying to finish all of my fellowship applications, and I want to make a party out of it. 8:37pm The French House Maisonette I went to put my laundry in the dryer, checked my mail, and found a very sweet birthday card from my grandma. I LOVE YOU GRANDMA! :D 11:25pm The French House Maisonette Cheers, screams, bangs, smoke. The Red Sox just won the World Series, and we have a spectacular view of Fenway Park out the window across the river. Midnight The French House Maisonette I have some very punctual friends. :)