4 ms·

Decently covered in 10 minutes or so in video form: https://youtu.be/Kp_kqamkYpw https://youtu.be/Kp_kqamkYpw https://en.wikipedia.org/wiki/Missing_baryon_pro

by tux1968 6y ago

Decently covered in 10 minutes or so in video form: https://youtu.be/Kp_kqamkYpw https://youtu.be/Kp_kqamkYpw https://en.wikipedia.org/wiki/Missing_baryon_problem https://en.wikipedia.org/wiki/Missing_baryon_problem

dang 6y ago
There was also a smallish thread a few weeks ago: https://news.ycombinator.com/item?id=23335794 https://news.ycombinator.com/item?id=23335794
supernova87a 6y ago
This is a pretty good video -- not overhyped and not filled with frenetic video clips mashed together from across the internet, and also not overly focused on a Youtuber's overly-bubbly personality seeking self-adulation and clicks...
- seusscat 6y ago
  Veritasium is a great channel for such content. He has a degree in online pedagogy, IIRC. So he's particularly good at teaching complex concepts through such a medium. Having a degree in physics helps him too.
  - supernova87a 6y ago
    I just watched a bunch of his videos -- how interesting! Thanks for the recommendation. I wonder what his special techniques are to keep viewer engagement and help explanation, and whether he's consciously choosing to do them. For example, I notice that unlike most Youtubers who'll record the narrated portion purely from their desk (showing their face) perfectly still and nicely lit, he will even handhold his camera and move around a room. Or when interviewing someone, hold a camera himself showing the interviewed person, and yet have another still camera filming him and his other camera and the interviewee. Or standing in front of a wall projector screen video and talking (despite the projected image being mediocre quality) when most people would insert that as a original video source clip and narrate over it. And yet while this might usually be distracting, for some reason with the quality of the narration, this makes for a nice break from usual. Or makes it seem more "authentic" and engaging. Interesting!
    - pja 6y ago
      Derek did his PhD on the public education of science. He’s been honing his craft for a /long/ time & it really shows.
- mehrdadn 6y ago
  Veritasium videos are pretty darn high quality. Fun to watch and learn from, sometimes mindblowingly. Definitely recommend subscribing. One of my favorites is Derek's video on compliant mechanisms: https://www.youtube.com/watch?v=97t7Xj_iBv0 https://www.youtube.com/watch?v=97t7Xj_iBv0
joe-collins 6y ago
Decently covered in a single paragraph by the top comment. Videos are excellent for content that should be shown. For descriptive content like this, a video is a strictly inferior mode of transmission.
- simonh 6y ago
  I thought the visual explanation of the Lyman-alpha forest, showing how the distribution of shift in the absorption lines give us a precise map of neutral matter density along the track of Quasar transmissions, was particularly good.

dang 6y ago

There was also a smallish thread a few weeks ago: https://news.ycombinator.com/item?id=23335794 https://news.ycombinator.com/item?id=23335794

supernova87a 6y ago

This is a pretty good video -- not overhyped and not filled with frenetic video clips mashed together from across the internet, and also not overly focused on a Youtuber's overly-bubbly personality seeking self-adulation and clicks...

seusscat 6y ago
Veritasium is a great channel for such content. He has a degree in online pedagogy, IIRC. So he's particularly good at teaching complex concepts through such a medium. Having a degree in physics helps him too.
- supernova87a 6y ago
  I just watched a bunch of his videos -- how interesting! Thanks for the recommendation. I wonder what his special techniques are to keep viewer engagement and help explanation, and whether he's consciously choosing to do them. For example, I notice that unlike most Youtubers who'll record the narrated portion purely from their desk (showing their face) perfectly still and nicely lit, he will even handhold his camera and move around a room. Or when interviewing someone, hold a camera himself showing the interviewed person, and yet have another still camera filming him and his other camera and the interviewee. Or standing in front of a wall projector screen video and talking (despite the projected image being mediocre quality) when most people would insert that as a original video source clip and narrate over it. And yet while this might usually be distracting, for some reason with the quality of the narration, this makes for a nice break from usual. Or makes it seem more "authentic" and engaging. Interesting!
  - pja 6y ago
    Derek did his PhD on the public education of science. He’s been honing his craft for a /long/ time & it really shows.
mehrdadn 6y ago
Veritasium videos are pretty darn high quality. Fun to watch and learn from, sometimes mindblowingly. Definitely recommend subscribing. One of my favorites is Derek's video on compliant mechanisms: https://www.youtube.com/watch?v=97t7Xj_iBv0 https://www.youtube.com/watch?v=97t7Xj_iBv0

joe-collins 6y ago

Decently covered in a single paragraph by the top comment. Videos are excellent for content that should be shown. For descriptive content like this, a video is a strictly inferior mode of transmission.

simonh 6y ago
I thought the visual explanation of the Lyman-alpha forest, showing how the distribution of shift in the absorption lines give us a precise map of neutral matter density along the track of Quasar transmissions, was particularly good.