cjlars

5 ms·

1.
by cjlars 3y ago
Why is a retracting mast preferable to a freestanding rig with, e.g. a roller furling main or a nonsuch style wishbone boom? Is there a physics reason or is this a pragmatic trade-off to fit under bridges and stay out of the way during load
2.
by cjlars 4y ago
A simple tree chart is a good way to understand this: https://images.app.goo.gl/2CBG9Se4vPB1jaMY9 Animals in general are only a tiny sliver of life on this planet. What most people think of as 'nature' i.e. large
3.
by cjlars 4y ago
>The report projected that the United States would have a cumulative total of 7.5 to 10 million metric tons of solar panel waste in 2050. This compares to 292 million tons of total landfill waste in 2018 alone [1], putting solar panel wa
4.
by cjlars 4y ago
I've been on the other side as a buyer. Although I work with 'main street' companies, not high tech, I think there's a lot of generalizable lessons. One thing to keep in mind is that some buyers have substantially all of
5.
by cjlars 5y ago
Big difference between manually initiating the transaction and amount vs accidentally signing away everything because of one obscured line of code.
6.
by cjlars 5y ago
Plenty of electric scooters have no mechanical brakes and only electric braking on one hub. But since an extra couple feet of stopping power can be a life or death feature, you definitely want breaking on both tires. Even assuming no reliab
7.
by cjlars 5y ago
Virtually everything besides Rolex, Patek, AP and Vacheron is in stock. For anyone on the wait-list or considering going grey market for a high demand model, I'd strongly recommend looking at comparable models from the wide variety of
8.
by cjlars 5y ago
The headline writer kinda went off the clickbait deep end. The article doesn't event mention Reddit or social media.
9.
by cjlars 5y ago
There has been opposition to greenfield developments on environmental concerns, much harder to oppose a dual use installation over farmland. https://www.latimes.com/world-nation/story/2021-11-03/the-mo...
10.
by cjlars 5y ago
One issue with solar is where we put it all. If it turns out that a meaningful portion of farmland has an excess of solar energy, that takes a big bite out of the problem. Powering the US entirely on solar might take a land mass equivalent
11.
by cjlars 5y ago
I was confused at first by a lot of diagrams I found online, but the wiki is pretty good. Basically think of a two way radiator. Hot air flows through air channel blades on the way out, cold air flows around the blades on the way in, with f
12.
by cjlars 5y ago
I'm in SF. The tricky thing here is that outdoor humidity is often so high that a humidistat would only result in an 'always on' system. I think CO2 is an objectively better measure anyway. You can remove humidity and particu
13.
by cjlars 5y ago
I think an ideal heat recovery system would probably sit mid-stream in a central air system with a built in CO2 trigger. Basically, the return air gets exhausted while heating the incoming/supply air when CO2 concentration > X. Obvi
14.
by cjlars 5y ago
"Eating five or more fruits and vegetables a day has decreased from 42 percent to 26 percent" ... "between the period 1988-1994 and then 2001-2006." https://www.livescience.com/5435-american-diets-worse.h
15.
by cjlars 5y ago
I recently retrofit a new HVAC system and as a result have also gone on a bit of a deep dive on indoor air quality. The big thing I learned is that most homes -- even old "leaky" builds -- have rather poor ventilation, meaning all
16.
by cjlars 5y ago
Truly massive and sorrowful results if it holds up to review / replication. From the preprint: >Across all measures, we found cognitive scores were significantly reduced during the pandemic by 27 to 37 points (or almost two full sta
17.
by cjlars 5y ago
Standard advice in the nutrition community is to that most people should be substituting processed foods and meats in the diet with whole fruits, whole vegetables and whole grains (a "plant based" diet): https://www.ncb
18.
by cjlars 5y ago
Thirteen thousand words and no discussion of the elephant in the room: 95% of Americans don't eat enough fiber. Fiber is the bulk that keeps you full between meals and that bulk -- quite literally -- helps prevent overeating. If 19&#x2
19.
by cjlars 5y ago
Spring drive's are cool. I'll try my best fast explanation: it has an ordinary rotor and spring barrel, but replaces the escapement with a flywheel, an electromagnetic break (like you have on an ebike) and a quartz controller. The
20.
by cjlars 5y ago
Are these numbers comparable to OP? It's hard to reconcile that FL is at 24%, or NY at 13% w/ antibodies vs the headline.
21.
by cjlars 5y ago
Having spent time supporting these sorts of live / PR events, there's a non-zero chance that this was brought in last minute by an underling.
22.
by cjlars 5y ago
Doesn't Blue Origin use liquid hydrogen and oxygen for the launches? I get that upstream fuel generation here is often CO2 heavy, but wouldn't it be fairly straightforward to go zero emissions for the full lifecycle of these launc
23.
by cjlars 5y ago
Doesn't appear to have held up to replication. [1] >However, unlike Tsukuhara et al., we could establish only small to nonexistent associations between cognitive ability and pupil size (r’s -.01 to .06, r with g specifically = .05)
24.
by cjlars 5y ago
The phrase, "don't blame the player, blame the game" comes to mind. Not that I fully believe that, but it's so easy to get a prop on the CA ballot that you get this sort of total nonsense every year. Sometimes it passes.
25.
by cjlars 5y ago
I think it's a cool concept and have been following it for a while, but it's worth noting that they started pushing the stimulator before, not after, the pandemic started. I think maybe to create a feeder league or something?
26.
by cjlars 5y ago
I feel like the whole point of drone racing is to have that sort of video game in real life situation. You can have tighter turns, narrower gaps, and far more glorious crashes than you can get IRL... All without the risk to life and limb yo
27.
by cjlars 5y ago
A clean eviction history for the building is an advantage for a number of reasons, including subdividing into condos. The cash flow concerns are only part of the reason empty units get a premium.
28.
by cjlars 6y ago
Is this source properly separating BTC purchase transactions with trading transactions? Because if not they'd be way overstating BTC velocity.
29.
by cjlars 6y ago
You can almost 100% solve the issue by taping the top edge of the mask to your face with surgical tape. Just a 6 inch strip of tape along your nose and under each eye and glasses fogging was 98% gone for me. It's probably not the most
30.
by cjlars 6y ago
1 volt per sq cm, easily enough to run a traditional watch, but maybe not a smart watch.

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