Interesting Nerdy Pictures and Videos Thread

This is not a video, but it is a pretty interesting article. Call it another victory for Trump 47.

ISAIAH HANKEL: The resignation of Scientific American's editor-in-chief is great for humanity​


In recent years, institutions that were once celebrated for their objectivity have begun veering into overt partisanship, turning away from their founding principles. Few examples are as stark as what’s been happening over at Scientific American.

Once revered for presenting science as a neutral and evidence-based pursuit, the publication became mired in ideological bias under the leadership of the now former Editor-in-Chief, Laura Helmuth. Her recent resignation amid controversy—following an expletive-laden rant against Trump voters—is a watershed moment, underscoring the perils of turning science into a platform for political advocacy.

Elon Musk’s recent comment on social media—“‘Scientific’ American needs a change in management”—captured the frustration of many who saw Helmuth’s behavior as emblematic of broader problems in institutional leadership. Musk’s call for reform isn’t unique; it echoes a growing sentiment that science, journalism, and education must return to their apolitical roots.

Helmuth’s resignation doesn’t exist in a vacuum. It is emblematic of a larger cultural shift.
Click to expand...

humanevents.com

ISAIAH HANKEL: The resignation of Scientific American’s editor-in-chief is great for humanity

Once revered for presenting science as a neutral and evidence-based pursuit, the publication became mired in ideological bias under the leadership of the now former Editor-in-Chief, Laura Helmuth.
humanevents.com humanevents.com
 
ToddDubya said:
Another one that's not a video, but is interesting. I can't explain to myself why D and E have such different voltages.


View: https://x.com/NERD2040/status/1866399021725548552
Click to expand...

In D, you get huge current spikes into the cap at the tops of the recertified sine wave. The peak cap voltage = the sine's peak (minus a diode drop). In E, the inductor slows down those current spikes into the cap so it doesn't get fully charged by each peak of the sine wave. F has the advantage of D plus a second cap for additional filtering of the ripple.
 
cockpitbob said:
In D, you get huge current spikes into the cap at the tops of the recertified sine wave. The peak cap voltage = the sine's peak (minus a diode drop). In E, the inductor slows down those current spikes into the cap so it doesn't get fully charged by each peak of the sine wave. F has the advantage of D plus a second cap for additional filtering of the ripple.
Click to expand...
This makes sense to me.
 
Choctaw said:
Click to expand...
Very interesting history, even ignoring European developments.

Walter Hunt, Elias Howe, Walter Hunt and Isaac Singer all contributed. To solve patent disputes, the various claimants pooled their patents, and a royalty was paid to Howe for every machine made.

Howe grew up in MA, apprenticed at the Lowell mills, and was issued an uncontested patent in 1846. There had been a much earlier development of a lock stitch machine but the inventor, Walter Hunt, did not submit a patent application until later.


View: https://youtu.be/DARBpJD6l30
 

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