If you like scrolling you might enjoy the previous feature: solar-earth light ray diagram to scale. In the spirit of that, and to answer some general complaints, "Why is the photo so blurry!?"... Here's me attempting to put our first black hole portrait to human scales. Of course, this time it's utterly impossible to put … Continue reading [To Scale] That Black Hole Picture
Year: 2019
FW’s Notebook, Spacetime Optics with a Schwarzschild Blackhole
Some scrap calculations that I think are valid. —— Waiting for the black hole image now! 19:02 NZDT, Auckland
π Day Memories
Recite π as a binary decimal, if you wish. This page is updated annually, subject to my current time zone. On π day, 2014, at about 15:9.26, I ate a chocolate pie (those small ones) during a Chinese literature class, got nearly choked, and had to leave the classroom to search for water... Thank you … Continue reading π Day Memories
QuickType Scientific Symbols [Updated June 26th]
Some of my text-friends ask me how I can quickly type out mathematical symbols when we are discussing homework problems. Well, for one, I enabled the Greek keyboard on my phone, and then there's this: taking advantage of the automatic text-replacement system built right in macOS and iOS. To use this table, on iOS and … Continue reading QuickType Scientific Symbols [Updated June 26th]
Watching the Ocean [Translation Work]
An over 1,800-year-old poem revisited :).
How Did pi Get Here? (FWN’s Solution to 3Blue1Brown’s Puzzle)
An interesting problem calling for "high perspectives" on elementary maths.