madvoid

What's more alarming is this site is pretty high up on google when you search for "Staub cast iron".

Imagine you're a 16th century Italian mathematician who is trying to solve cubic equations. You notice that when you try to solve some equations, you end up with a sqrt(-1) in your work. If you're Cardano, you call those terms "irreducible" and forget about them. If you're Bombelli, you realize that if you continue working at the equation while assuming sqrt(-1) is a distinct mathematical entity, you can find the real roots of cubic equations.

So I would say that it's less that "Complex numbers were invented so that we can take square roots of negative numbers", and more "Assuming that sqrt(-1) is a mathematical entity lets us solve certain cubic equations, and that's useful and interesting". Eventually, people just called sqrt(-1) "i", and then invented/discovered a lot of other math.

Source: http://fermatslasttheorem.blogspot.com/2006/12/bombelli-and-...

For small scale circuits, I like Scherz's "Practical Electronics for Inventors". For a good high level overview of the grid, along with other civil engineering topics, Grady Hillhouse's "Engineering in Plain Sight" is good. Hillhouse's videos pop up on HN occasionally (e.g., https://news.ycombinator.com/item?id=34472122)

I love that the whitepaper doesn't actually have any white pages...

Everything he makes is great, I'd also highly recommend the GPS explanation.

Amen. Due to reliability and lack of updates I don't use it anymore but Nintype was by far the best mobile typing experience I've had.

Recently switched from a Kindle to a Kobo and here are my findings so far:

Kobo Pros:

* Natively handle .epub files

* Overdrive integration for library books

* Dropbox integration so it's quick to transfer files from my laptop

* Pocket integration. Being able to read long form web articles on an e-ink screen is a game changer for me.

* OS is generally better

* Minor, but I like seeing the book I'm reading on the sleep screen

Kobo cons:

* Buttons are slightly worse than the Kindle's

* For the Sage, the battery life is worse than the Kindle. I've heard the other models are better though.

Burning man being NIMBY about geothermal energy (https://www.rgj.com/story/life/arts/burning-man/2022/01/10/b...) probably has more negative impacts towards the climate than their fires.

I linked to the Reddit page because the creator of the site seems to be active there.

Home automation or LEDs are always a good start in my opinion. Home automation because it's something that will affect your life and you'll notice, LEDs because they're pretty (e.g. https://news.ycombinator.com/item?id=29468919).

Thank you for the link. My mayor is on here which I'm very unhappy about.

I got a pair of AfterShokz (https://aftershokz.com/us/) for swimming and in some ways it’s more convenient than an iPod shuffle because the headphones are integrated. I really like the bone conduction tech too.

I actually think what you eat is the dominating factor in food CO2 production: https://ourworldindata.org/uploads/2020/02/Environmental-imp... Transport and processing are fairly minor components overall for all foods. The claim about pesticides and fertilizers I know nothing about though.

I'm planning on buying a printer soon elevation maps are one of the things I was hoping to print - thank you for the awesome tool! Assuming the users are okay with it I think it would be cool to show some of the pics people send you for inspiration.

Thank you for the reply!

Hi Matt, what kind of work do data scientists do at USDS?

"Generally" could mean what you mentioned, or it could mean straight slavery - as the article said there is not good stats. Forced labor is prevalent in many industries, using the US definition of slavery: https://www.dol.gov/sites/dolgov/files/ILAB/ListofGoods.pdf Your original claim was that decriminalizing drugs would prevent this sort of behavior. I think the linked report shows that is not necessarily true.

Coffee: https://www.washingtonpost.com/world/the_americas/the-hidden... Sugar: http://edition.cnn.com/2009/WORLD/americas/01/09/brazil.slav...

I do not believe your implied claim that decriminalizing drugs would prevent this sort of behavior is correct.

+1 for maps.me, it's my goto app when traveling

The word for this general phenomena for those that are curious is Goodhart's law: https://en.wikipedia.org/wiki/Goodhart%27s_law

Clinton has been called "The first black president" before: http://ontology.buffalo.edu/smith/clinton/morrison.html

Opening Arguments. It's a law podcast that's packed full of information about current events and is very accessible.

I just tried this. On iOS 11 on my iPad, putting the wrong finger three times in a row prompts for a passcode, but, you can hit cancel and then use a correct finger and it will still unlock. So I don’t know if that helps you because it doesn’t require a password after three incorrect tries, just prompts you for one.

This is excellent, thank you! I think one thing that would make it better is a reset button for each visualization. It's always nice to go back to the default without having to reload.

You should watch some of engineerguy's videos on youtube: https://www.youtube.com/user/engineerguyvideo/videos. He goes over some of these small details in products and why they are there. It's quite interesting!

Why not link to Shazam's page for a song? It seems pretty static to me and includes other semi-useful information, including links to online music stores and youtube. Example: http://www.shazam.com/track/52242019/wait-so-long

The Sensirion SHT35 [1] is good down to +/-0.2C. However, it's important to note that having such an accurate sensor is somewhat useless if there's not a radiation shield. A sunny day will change the temperature reading by several degrees C.

[1] https://www.sensirion.com/products/humidity-sensors/digital-...

In Salt Lake City, most of the crosswalk buttons work. During low traffic times, some buttons even immediately change the lights.

I'm slightly digressing, but I always thought it was interesting how the printed circuit board software Eagle was a combination of a graphical and text based tool. You can use the buttons like any other CAD program or you can enter commands into a limited command line. I like that UI but I've not seen other programs like it.

Quick tip if you are on OS X: Pressing ctrl+command+space pops up an emoji bank so you can enter them in any text field. Now you don't have to hunt for emojis to put in the website.

Love the website btw!