"StarBrilliant  @m13253
伯克利教授的远程教学公告：

- 万一Zoom不能用，我们用Google Meet
- 万一谷歌也不能用还有亚马逊云上的网站
- 万一也坏了，我还有自建语音服务器
- 万一大规模停电，我会用业余无线电广播
- 万一湾区不能住人了，我改用短波，请提前学一下摩尔斯电码

请放心，无论什么困难都不会阻止你学习量子力学"

其实原文里说的是147.060MHz + PL tone of 100Hz, KN6CDY
再加APRS
再加CW

...

如果有核爆导致电磁场非常强，建议用真空管 或 法拉弟笼




Subject: Online Discussions and Office Hours

Hi all,

as you probably already anticipated, I will move my discussion sections and office hours online, starting tomorrow. I'm sure your biggest concern right now is how we can continue to have class. Don't worry -- I am prepared:

  - The default method we'll use is Zoom—you'll have to download the client at https://zoom.us. I will post the data you need to join the meeting on bcourses.
  - In case Zoom doesn't work for some reason (e.g. because the service is overloaded), we will use Google Meet. If that happens, I'll announce it beforehand. If you don't use an @berkeley.edu email address, I will have to invite you individually, so keep that in mind.
  - If Google Meet also doesn't work anymore, I'll use a site called https://explaineverything.com, which is hosted AWS. You'll be able to see a whiteboard and talk to me directly in your web browser, but there's no video.
  - In case that also ceases to work, we'll have audio-only discussion sections on my mumble server. I will send the details when it comes to that.
  - In the case of bigger infrastructure disruptions (like a large scale power outage), we're going to have sections using amateur radio: I will use the Mt Diablo repeater station at 147.060 MHz with a PL tone of 100 Hz. My call sign is KN6CDY.
  - In case the Bay area becomes uninhabitable, I will move to the wilderness. I plan to still be reachable via APRS, but we'll probably have to move sections to shortwave. In that case, we'll use CW transmission, so practice your Morse code.
Note that a nuclear attack in the upper atmosphere can create very strong electromagnetic fields, so if you want to prepare for that, either use vacuum tube based radios, or store them in a Faraday cage.

I hope this assures you that no matter what happens this semester, I will not let it prevent you from learning quantum mechanics.

Best wishes,
Christian
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修改:Scateu FROM 221.222.213.*
FROM 221.222.213.*