Building a new camera rig with some pre-fabricated shortcuts.
An over 1,800-year-old poem revisited :).
Flashback to five years ago.
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
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
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
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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