What I saw on the web on 2020.12.24

1. I wired my tree with 500 LED lights and calculated their 3D coordinates.
   by Stand-up Maths
   https://www.youtube.com/watch?v=TvlpIojusBE
   some cute applications of linear algebra here
   via rss
   
   
2. Building a custom scissor lamp
   by Simone Giertz
   https://www.youtube.com/watch?v=fUq7htzSmGY
   oh, you thought this was going to be a satisfying build montage
   via previous link
   
   
3. Photographer Captures ISS Passing Between Jupiter and Saturn
   by Michael Zhang reblogging Jason de Freitas's photo
   https://petapixel.com/2020/12/22/photographer-captures-iss-passing-between-jupiter-and-saturn/
   nicely done!
   via slashdot
   
   
4. I asked my students to turn in their cell phones and write about living without them
   by Ron Srigley
   https://www.technologyreview.com/2019/12/26/131179/teenagers-without-cell-phones/
   yup. Just, yup
   via FB
   
   
5. Bhairavi Tivra
   by Nancy Lesh with Dalchand Sharma
   https://www.youtube.com/watch?v=ykzYRxxklTc
   a traditional Dagarvani composition
   via googlery
   
   
6. "All I Want For Christmas..."
   by Captain Jean-Luc Picard, with assistance by John C. Worsley
   https://www.youtube.com/watch?v=3KvWwJ6sh5s
   this does indeed seem like all that he would want
   via boing
   
   
7. Natural Number Game
   by Kevin Buzzard
   http://wwwf.imperial.ac.uk/~buzzard/xena/natural_number_game/
   in case you feel like constructing Peano arithmetic inside an automated proof-checker (and, honestly, who doesn't?)
   via googlery off of reddit
   
   
8. Own the Tools
   by Raptitude
   https://www.raptitude.com/2020/12/own-the-tools/
   a welcome reminder
   via rss
   
   
9. The ARCTIC CIRCLE THEOREM or Why do physicists play dominoes?
   by Mathologer
   https://www.youtube.com/watch?v=Yy7Q8IWNfHM
   parts of this were obviouser than other parts
   via rss