p1mrx

Joined 15 years ago

Karma
6,959
Submissions
2,187
Member since
May 16
https://github.com/pmarks-net/
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Recent submissions

Comment · 17 days ago
Light travels 2000 km in 7 ms. Maybe you took the inverse and got 150 Hz?
Comment · 24 days ago
When ICANN reserved .internal a couple years ago, I was saying they should just flip and truncate it to .lan(retni) so everyone's happy.
Comment · 26 days ago
> How come folks can’t conserve energy?

The whole economy runs on energy, and we have a lot of fossil fuels to replace.

Comment · 1 month ago
Claude Sonnet 5 on openrouter.ai/chat

> Write a song about the T-rex. First line "Hotter than a crocodile, cooler than a chicken". Format for aisonggenerator.io.

Then I copied the output to aisonggenerator.io (1 free song per day), and used Audacity/Tenacity to record the MP3 because they make you pay to download.

Comment · 1 month ago
Comment · 1 month ago
A solar array makes the earth less reflective by a fixed amount, for as long as the array exists.

Every unit of fossil fuel we burn makes the earth permanently less reflective (or at least something on the order of 100 years). You could compare a 1GW solar array (for its lifetime) to a 1GW coal plant running for x days, though I don't have the value of x.

Comment · 2 months ago
Even if you ignore my LLM numbers, "what percent of a reactor's output must be reinvested to enrich its own fuel?" is a meaningful contribution to the discussion.
Comment · 2 months ago
Take these numbers with a grain of salt because I got them by chatting with AIs, but if you're producing electricity from HALEU, then centrifuges require reinvesting <1% of the output, whereas historical calutrons required 200% (useless) and modern technology could potentially bring that down to 10%.

So calutrons will always be less energy efficient than centrifuges, but if the capital cost and construction time is low enough, calutrons might still be economically viable.

Comment · 2 months ago
Gravity is not "harvested", it just stores the energy briefly. Someone or something has to lift the weight for every shot, which requires energy.

It's not obvious whether a trebuchet is better than compressed air, like a BB gun.

Comment · 2 months ago
Comment · 2 months ago
Popcorn bags are a significant source of PFAS and microplastics.
Comment · 2 months ago
So the content falls down at 10 m/s^2 unless you're falling alongside it.
Comment · 3 months ago
The openness of those codecs depend on the last patent expiring, not the first.
Comment · 3 months ago
Note that MPEG-4 part 2 is H.263/DivX/XviD, not H.264.

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