Patrick Truchon 🇨🇦

Hi Doug, very good summaries of your classes! I've linked them on our club website in case it helps other aspiring hams get started. scarcs.ca/blog/2025-11...

I do not want to “Do my own research.” I want to pay trained accredited experts to do the research, trained accredited experts to report on findings, and trained accredited experts to make policy based on them.

I am busy af with my own job, I don’t need to do eight zillion more.

WOMEN IN PHYSICS DAY! In honor of the pioneering women in physics who broke down barriers to do what they love, we celebrate Women in Physics Day on November 7th, the birthdate of both Marie Curie and Lise Meitner. Marie Skrodowska-Curie (1867-1934) Radioactivity pioneer, two-time Nobel laureate A giant of science, Marie Sktodowska-Curie conducted pioneering research on radioactivity, a term she coined. She discovered two elements, founded two medical research centres, won two Nobels, and invented mobile X-ray units (dubbed petites Curies), saving countless lives in World War Lise Meitner (1878-1968) Nuclear physicist When Lise Meitner was a teen, Austria restricted female higher education. She pursued physics anyway, and 25 years later became the first woman in Germany to hold a professorship in physics. She helped discover nuclear fission, but was contentiously not awarded the 1944 Nobel alongside collaborator Otto Hahn. NOVEMBER 7TH

Dear Physicists and Physics fans,

I would like to encourage you to celebrate #WomenInPhysics Day this Friday, November 7th.

Why November 7th? Because it is the birthday of two of the most impactful women physicists of the 1900's: Marie Curie and Lise Meitner. 🎢 ⚛️ 🧪 👩‍🔬

Glad it helped. With just the first two points, you can get a good qualitative feel for a lot of LC filters (series, parallel, mixed) just by asking: which path will the low, mid, and high frequencies take.

Exactly. If you put the capacitor and inductor between Vin and Vout instead, then it would be the opposite: mid range would get through to Vout, but the highs and lows would be blocked.

... But somewhere in the middle, there's a frequency that's able to get through to the dump, so less of that one makes it to Vout. That particular frequency depends on. The values of L and C.

So... By putting a capacitor and inductor in series, you make it hard for both low and high frequencies to get dumped, so they reach Vout more easily...

3. In your diagram, the line below the inductor and capacitor is like a sink where you can "dump" parts of the signal you don't want to reach the Vout side. If the route to the dump is easy to take, parts of the signal will take it, otherwise, it'll continue straight to Vout.

Three things to understand first:

1. An inductor makes it hard for current at high frequencies to get through.

2. A capacitor makes it hard for currents at low frequencies to get through.

I can expand on these if you need.

...

Yeah... le sigh

Hollywood stars and geeks unite to billionaire-proof social media The likes of Mark Ruffalo and Jimmy Wales are backing the Free Our Feeds project, to ensure Bluesky's tech will thrive even if the company goes bad.

Big news! There's a new project that's raising cash to build out AT Protocol infrastructure that isn't dependent on venture-funded Bluesky, to stimulate the development of new social networks using that infrastructure, and to make the protocol's governance more democratic fortune.com/2025/01/13/m...

As a convicted felon the only way Trump can now visit Canada is if he annexes it

i hate to be a monocausal guy but i really think this discussion of masculinity, trade school, the gendering of education etc is beating around the bush. male democrats have seen no sizable drop in their desire to attend college. female republicans have. it’s about politics.

A globe of the Earth on a shelf with the Pacific ocean facing out to outline how much surface water the Earth has.

Good point. I just set up a reminder of this fact on our shelf.

And a conversation on Canadaland: Nice Try, Bluesky (Still Bitter Over Twitter)

www.canadaland.com/podcast/1061...

Cory Doctorrow's Bluesky and enshittification:
"Bluesky lacks [...] the ability to leave [it] and go to another host and continue to talk to the people I've entered into community with there."

pluralistic.net/2024/11/02/u...

After lurking here for almost a year: Hello Bluesky.

I quit twitter five years ago after being active for 10 years. And I have to admit I'm a bit hesitant to get invested in a new social media platform so I'll take it slow.

For all the good I've seen so far, I'm still worried about lock-in...