An interesting problem calling for "high perspectives" on elementary maths.
First post of another new category, or maybe this falls into the old "Poetry" bin. I had packed my stuff early in the evening for the comet / meteor shower situation, only to have my expectations quenched by an untimely thunderstorm. Well, I have heard of it in the forecast, but was not expecting the … Continue reading Photo Stories: Lightning
Lurking in my recent research readings, this is a problem at the intersection of middle school geometry and quantum chaos ... This week's post was delayed such that certain subscribers taking final exams won't be disturbed. Hope you all had fun. Question: Inscribe a triangle of minimum perimeter inside an arbitrary acute triangle. Demonstration I. … Continue reading FW’S NOTEBOOK #2 – Fagnano Problem
Will I have some theme for these posts? The question is, again, rather easy to state. But to me, it is one of the best introductory examples to ODE solving and chaos with a simple physical model. Q1. Describe the motion of a simple pendulum were you to replace the massless string with a spring … Continue reading FW’s NoteBook #1 – The Spring Pendulum Problem
I guess you know the drill by now. Round earth with a moon whizzing around, and the pair occasionally block sunlight from each other. Neat stuff. Do you want to see an actual ray diagram of that? Yes! Well, I drew one in Adobe Illustrator, and then converted it to html. Edit: WP Does not … Continue reading What Does it (really) Take for an ECLIPSE?
Putting the iPad to the same good use, but publicly. Summer is beginning, and my first three years of formal college education has come to an end. During this period, I have perfected the skills of Googling for good questions and solutions on a variety of subjects, *rarely* for homework, and for self-study. It's time … Continue reading FW’s Notebook #0 – Opening and Big CIRCLE GEODESICS
It is still an early draft. [a][b][c][d][e][f][g][h][i]To Anna Story Iteration #4[j]fWork in ProgressInstead of footnotes, I have laid out some comments that I think may aid your enjoyment.I.Del decided to consume a star.Although it could be costly, feeding on the small fusion furnaces had been Del’s most reliable source of sustenance. He[k][l][m][n] needed to continue his search … Continue reading Stillwater: A Short Story
Title Image: Stefano Rellandini/Reuters The news of the bridge collapse in Genoa, Italy has had me concerned in a while. Although the official report is yet to come out, I think the potential causes of this tragedy might be either a faulty design or maintenance, maybe overloading and windy weather added to it too. It's … Continue reading On Ponte Morandi
There is no excerpt because this is a protected post.
A fantastical encounter. Version 5F I. She saw mountains in her dream. The Sun, joined by a few distant silver crescents, illuminates one side of her dome window as Ann wakes up in the control chamber, rejuvenated, but still slightly fatigued, thanks to the prolonged weightlessness. Slightly disoriented, she takes a brief moment to confirm … Continue reading Drops of Europa
I am exactly 20 years old now. BJT 1998-05-12 15:10. PDT 2018-05-12 00:10. 据我的父母所讲，我在二十年前的这个时刻来到了这个世界。从那时，到现在，接近一半的时候，我渐渐意识到我所知道的一切都开始于那个时间，连带我所可能知道的一切。我时而飘渺地看见了无法逃离的归宿，但也把路上的一切风景留给了命运。 感谢我的父母、家人、前人、祖国、世界。感谢我所能够认识的正在读这段话的所有人。二十岁是一个新的开始。 According to my parents, my journey began this moment exactly 20 years ago. About half way between then and where am I now, I began recognizing that everything I ever knew began on 12/May/1998, along with everything I will ever … Continue reading 1510
Hi there! This is the last planned update for March. Sorry for the spam-like update rate. https://youtu.be/N8eY7CrzhSc
A few days back on Zhihu.com at home, there was an astronomy question that made it onto the "Trending Q&A" list (quite impressive for my homeland), "What is the most frightening celestial object known to science?" Not surprisingly, in the scientifically literate answers -- many of which I might be interested in covering in the … Continue reading What is the Most Frightening Celestial Object?
S1: A Second Star Also, Celebrating Berkeley's 150th Charter Day. Physics Library, Strawberry Creek, CA Not sure what's going on? Here's the previous piece in this story: S0
I am committing this moment to memory. It indeed feels bad to be struck by the news -- I was just in a conversation about hawking radiations this afternoon -- I suppose that before the moment of death detaches myself from my senses and mind, I'd remain in such a powerless position: a witness of … Continue reading To Prof. Stephen Hawking
This one fits in my arts portfolio slightly better than a in blog post, but I only have one den around here, so to say. Back to GRE prep. (Just a practice for something I’m working on) Dedicated to Physics 139
Welcome to the Nebulous Future An Introduction to Complex Systems A Speech at Toastmasters, February 21st, 2018 Toastmaster, members and guests, good evening. [Newton's Dream] Around three hundred years ago, after setting the foundations of Calculus (ahem), Sir Isaac Newton wrote down his three laws of motion. First - A body will stay at rest … Continue reading Welcome to the Nebulous Future: Speech at Toastmasters on Campus
It's a nice day looking out, There's squawk in the distance. A being sits by the glass, through another, it grasped a cup of water, it swirled like galaxies: one born out of another. . The entire history of all we comprehend as cosmos elapses. . it took a sip. It's a nice day looking … Continue reading ‘Cosmos’
Well, since bits of it have already shown up in postcards that I send, I thought I might as well expand it into a doggerel. I really want to change it and add a few commas, but good night for now. Lunar eclipse yesterday morning that inspired this piece. Check it out on UC Berkeley … Continue reading Earth, #3