qjkxbmwvz

joined 10 months ago
[–] [email protected] 1 points 2 hours ago* (last edited 2 hours ago)

Title of article, when I view it, is

A New Study Details a Startling Air Pollution Racial Gap

https://www.motherjones.com/environment/2014/04/air-pollution-racial-disparities-nitrogen-dioxide/

So, did OP change title, or did the article change title in the decade since it was posted?

But yeah


the premise is ridiculous only if you deny systemic racism. If you accept that, then (awkward "title" notwithstanding...) this is pretty clearly the case: economic stratification isn't just "my home is bigger than yours," it's "my home is further from the freeway than yours" or, if you like, "living in my home is healthier than living in your home."

[–] [email protected] 1 points 2 hours ago

OP, link please?

When I view the article, the headline is

A New Study Details a Startling Air Pollution Racial Gap

Archive.org only has two grabs, both from this year though (and agree with the current one, above).

[–] [email protected] 5 points 5 hours ago

You can eat the skin


it makes a good vegan pulled pork base (lots of recipes online).

[–] [email protected] 1 points 5 hours ago

I split mine in two. It's easy but makes you look like a badass. A banana splitting badass.

[–] [email protected] 1 points 7 hours ago

So what is an easy to use or no think thing I could use a pi 5 for?

It sounds like you really want something that works "out of the box," in which case, I would look for projects that have disk images available.

This severely restricts what you can do with it, and as others have mentioned, is a bit antithetical to the Pi's original purpose as a tinkering machine. But you may find something you like.

The most basic would be to just use it as a desktop replacement.

[–] [email protected] 1 points 9 hours ago (1 children)

Does Minecraft server have a known memory leak or something?

As a hack you can always set up a cronjob to automatically reboot at a time when you won't be using it, but not sure if that defeats the purpose of a Minecraft server...

[–] [email protected] 22 points 2 days ago* (last edited 2 days ago) (1 children)

Take numbers with a grain of salt, e.g., this link says a 7200RPM 160GB SATA drive from 2004 is $107, or about $0.67/GB, instead of the $5 claimed in post.

[–] [email protected] 5 points 3 days ago* (last edited 3 days ago)

Not at all in this case though! Or rather, it depends on your perspective.

"Why doesn't electricity leak out the outlet?" is a good question, if you know nothing about electricity.

"Why doesn't electricity leak out the outlet?" is a little stupid, if you know a little about electricity.

"Why doesn't electricity leak out the outlet?" is a great question if you know a bit more about electricity (because it does leak out, it's just that 50/60Hz doesn't couple to freespace well unless you have a colossal antenna).

As to this question, light in moving media: https://preprints.opticaopen.org/articles/preprint/Fizeau_Experiment_Investigating_the_Speed_of_Light_in_Moving_Media/25441108?file=45147313

[–] [email protected] 90 points 4 days ago (4 children)

It's a matter of perspective and use


high density one place means you can have open space somewhere else, for a given amount of land.

I'd much prefer a few large dense housing complexes, surrounded by green space, than suburban sprawl.

[–] [email protected] 2 points 4 days ago (1 children)

Sounds like maybe you want acoustic impedance ? Just like optical index mismatch, or electrical impedance mismatch, you get reflections at discontinuities. Neat stuff!

Not exactly sure what you mean by air-water-air "dampening," but my suspicion is that you're referring to sound being reflected at each interface, so the transmission is reduced. Antireflective coating, index matching, impedance matching are all rich topics in physics and electronics!

[–] [email protected] 8 points 5 days ago (1 children)

50kW class laser.

Another source claims 1um wavelength with individual 1.5kW lasers in a hex pattern


unclear if it's a phased array (would be awesome) or just trained on the same target (source mentions they are "combined using a mirror" so probably the latter).

Sounds like maybe high power YAG?

[–] [email protected] 8 points 6 days ago (8 children)

I just want a button that rewinds 10-15s, turns on subtitles, and then turns them off when it catches up again. It's a pattern I do manually with some regularity.

I suppose with Jellyfin/OSS, this is something I could implement myself if I was so inclined...

 

People often complain about San Francisco's public transit


and to be sure, it's not perfect by any means (multiple separate agencies doesn't help). But the historic streetcars are pretty neat!

They're painted with the livery of various historic streetcars from all over the country (and a few international, I think). Best of all, they run alongside the modern fleet


same route, same fare.

 

Noticed a few days ago that Sutro Tower's red blinking lights are now white. Just asked them on their website form, but wondered if anyone else knows the story with this.

Personally, I miss the red ones!

6
submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]
 

Howdy!

I got my Technician in early 2000s, and last year finally upgraded to Extra. Looking to set up a very basic shack.

I'm looking for an HF setup, with most of my use probably using digital modes, but would like the ability to use voice.

Current transceiver is on loan from girlfriend's dad, a Ten-Tec Scout 555


50W HF unit with separate modules for each band. One limitation of this is that the modules set the mode, so it's LSB on 40m, making e.g. FT8 not possible (without some hacking of code or perhaps hacking the module).

Antenna is end-fed with an off-the-shelf 49:1. Currently only have 20m half-wave, but have just enough room for a 40m half-wave in the attic, which is the ultimate goal.

For digital modes, it looks like there are sort of 3 classes of radio:

  • "full digital" where the radio has e.g. a USB port and handles audio, transmit, and frequency set.
  • Some computer-control with RS232, but uses computer audio+adapter to transmit.
  • No digital, use adapter to transmit. This is what the current setup uses (and it works great!)

I'm leaning towards a conventional transceiver, e.g., something from ICOM, Kenwood, Yaesu, (or others) rather than an SDR unit. I'd like the ability to go up to 50-100W if possible.

I don't have a hard-and-fast budget; would like to keep it <$1000 if possible; mostly just looking at used transceivers. Something like a Kenwood TS-590 looks pretty amazing and very "plug-and-play" (but pushing up against price). Something like a Yaesu FT-920 looks pretty feature-rich too; and even something more affordable like an ICOM 706 or even a 725 is probably more radio than I need. Or just grab a new 7300 and call it a day!

Anyway...clearly, I don't know exactly what I want, but figured I'd ask folks with more experience if they have any wisdom. Thanks!

view more: next ›