ch00f

joined 2 years ago
[–] ch00f 16 points 3 weeks ago (1 children)
[–] ch00f 3 points 3 weeks ago

Definitely been on my list. Just never got around to it.

[–] ch00f 11 points 3 weeks ago (2 children)

My wife and I always blame O'brien (at least in TNG. Haven't watched the other series he's in).

Dude marries a woman and proceeds knows basically nothing about her family/culture.

[–] ch00f 6 points 3 weeks ago

Debadging Teslas is definitely a thing. Back when they were rare, nobody could clock the model without the logo.

[–] ch00f 50 points 3 weeks ago (16 children)

Because I bought a $60k car in 2018 that still works fine, and replacing a fully functional vehicle is a huge expense to undertake.

[–] ch00f 2 points 3 weeks ago (1 children)

I think the point of the post is that one way or another, it's a topic where everyone has an opinion and it can be exhausting to listen to the debate.

[–] ch00f 37 points 3 weeks ago (3 children)
[–] ch00f 12 points 3 weeks ago

This is interesting!

I’ve done ewaste gold recovery myself. Typically you need to dissolve away all other metals, wash, then soak what remains (gold bits and bits of fiberglass) in aqua regia which dissolves the gold but not the fiberglass.

Then filter out the fiberglass and precipitate out the gold with sulfur dioxide.

The end result is nearly pure gold which is better than the 90% in this study, but purifying gold isn’t that hard, and this saves time in the steps where the circuit boards are involved.

Also I suspect this lets you re-use the aqua regia. I think Nitric Acid production involves some greenhouse emissions.

[–] ch00f 8 points 3 weeks ago (1 children)

Didn't even have to scroll all the way down this meme to clench my foot muscles. Mirror neurons have a direct line to my shitty ankles.

[–] ch00f 24 points 3 weeks ago

The Cask of Amontillasshole

[–] ch00f 2 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

The current a battery can accept/provide tends to scale with the size of the battery. So rather than measuring it in Amperes, it's usually measured in C. 1C means that the battery will be full charged or discharged in 1 hour. 4C means it'll be charged in 1/4 hour. The charge rating tends to be lower than the discharge rating though it depends on the cell.

Basically, you take the battery capacity and divide it by the charge rate. If you exceed the C rating of the battery, it could cause it to overheat or even catch fire.

When it comes to higher performance requirements (like in drones), you can get insanely high C rates like this though those batteries aren't typically designed to survive too many charge/discharge cycles.

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