timerol

40 ms·

421.
by timerol 7y ago
Energy density improvements in lithium batteries (the biggest factor in flight time) have been fairly gradual. There are drones that can fly longer, but they don't use batteries. There are a few drones that use the frame as a hydrogen
422.
by timerol 7y ago
This is a very poorly worded comment. I had to read it multiple times to get your point: Gas plants that run continuously (combined-cycle) have much higher efficiencies than peaker plants, so solar+peaker can have a lower efficiency than co
423.
by timerol 7y ago
Pumped storage is not a total solution. But in the areas where it works, it works very well and cheaply. Do pumped storage everywhere you can, and fill in everywhere you can't with other options. By the time we get close to fully inter
424.
by timerol 7y ago
"Battery systems" encompass all of the above methods of "energy storage connected to the grid". My personal favorite "so crazy it might work" idea is stacking concrete blocks on top of each other. Li-ion batter
425.
by timerol 7y ago
> stop at all the places people want to get on and off. This is an interesting trade-off. Assuming that people get off the bus somewhat randomly, then average stop spacing should be about a quarter-mile: https://pedestrianobse
426.
by timerol 7y ago
Excel is probably coercing them to floating point, instead of using infinite-precision integers. Wolfram-Alpha gets it right: https://www.wolframalpha.com/input/?i=%28-80538738812075974%...
427.
by timerol 7y ago
Lowest number that isn't 4 or 5 modulo 9. There are numbers that can't be expressed, the open question is whether all other numbers can be expressed
428.
by timerol 7y ago
Having your choice of thesis advisors be Enrico Fermi and Clarence Zener must have been awesome, even if neither of them wanted grad students at the time.
429.
by timerol 7y ago
The bottom line of the article is that we should use better and more understandable metrics about a hurricanes path, like https://www.nhc.noaa.gov/refresh/graphics_at5+shtml/174008.s... , which was referenced in th
430.
by timerol 7y ago
Street parking should be priced such that approximately 15% of it remains empty. If the street is getting full of residents, then the price should go up. Until the point where it makes financial sense to build more parking or have less cars
431.
by timerol 7y ago
Yep. And the government fixes the price of using a road at $0, causing the induced demand issue. A limiting factor of supply (how many cars are currently using the road) is completely ignored when setting the price. The cost of constructing
432.
by timerol 7y ago
If I'm reading your comment right, I think you agree with the actual policy proposal presented. LA currently makes it illegal to build density via mandating parking everywhere. Removing that mandate doesn't remove any parking imme
433.
by timerol 7y ago
"we should turn 10% of all current parking spaces into low-income housing" wasn't a proposal on the site. It was more of a demonstration that, if we could do that, we would satisfy the entire deficit of low-income renters tha
434.
by timerol 7y ago
Free here means free at point of use. I pay property taxes and don't own a car. You pay property taxes and do park a car. We both pay the same toward parking, therefore it makes sense to say parking is free.
435.
by timerol 7y ago
The government can, via eminent domain. This is how private railroads in the US were financed in the 1800s. The companies paid for land at pre-development prices via eminent domain, then built the railroad, then sold the much-improved land
436.
by timerol 7y ago
Almost certainly yes. But more importantly, they are probably never going to say anything about it publicly, so that they don't face backlash.
437.
by timerol 7y ago
It's also a matter of the government allowing a city to be built. This sounds trivial, but is actually the biggest component to the lack of affordability in SF and NYC. There are places where a lot of people want to live, but the gov&#
438.
by timerol 7y ago
> If you aren’t working from home, your workplace should be at least a couple of minutes away (better: an hour away) The notion of a commute being beneficial is weird to me. If it takes more than 5 minutes to get to work, I end up spendi
439.
by timerol 7y ago
The way you're describing this makes it sound like an extremely difficult process. In some ways, it is. However, every BT device that exists is currently capable of doing this frequency tracking and tight timing. It's merely a mat
440.
by timerol 7y ago
I did this with the first Harry Potter to help me learn German, back when I was re-reading all of the Harry Potter books as each new one came out.
441.
by timerol 7y ago
Assuming $0.25/kWh (a very high electricity price), that's $0.90 per kiloliter (264 gallons). No one's going to die of dehydration at those prices, though sanitation may become expensive in poorer areas. (With the obvious pub
442.
by timerol 7y ago
I also found https://startyourownisp.com/ to be a good resource. I have no interest in founding an ISP, but it was really cool to read and think about
443.
by timerol 7y ago
I was similar shouting, especially at the end. My point: > Growing up, Mr. Young says, he was taught to work hard to get a nice house and a reliable vehicle. Now he realizes how easily borrowing too much can undermine this plan. > “Th
444.
by timerol 7y ago
At the end of the article, it talks about "bag" being pronounced like "byaeg" or "beg", and "backpack" like "beckpeck". I'm surprised they didn't use the common example of "ba
445.
by timerol 7y ago
> nearly 100% genetic -- see Kenyans and running Kenyans/Ethiopians have held the world record in the marathon since 2003. An Ethiopian also held it for a few months in 1998, and most of a year in 1964. Were Kenyans not genetically
446.
by timerol 7y ago
This situation is treated the same as the following: Say I get paid $10,000 for doing a job, and buy bitcoin at $100/BTC. Now, say BTC drops to $1/BTC. I owe income tax on the $10000. Let's say I owe $2000 (20%) in taxes. How
447.
by timerol 7y ago
> ... according to a widely cited 2004 report from the Health and Medicine Division of the National Academies. People get about 20% of their water from food, the report states. It gets the number from that report, which is just above you
448.
by timerol 7y ago
And if spending £1300 up front seems absurd, then a french press and grinder combination can easily be acquired for under $100. It takes more interaction than an espresso machine, but the overall time is comparable to waiting in line behind
449.
by timerol 7y ago
This project has a really pretty website to go along with it, which includes a section on Use Cases: https://docs.vector.dev/use-cases
450.
by timerol 7y ago
A previous article mentions a "a five shots per minute minimum goal": https://www.thedrive.com/the-war-zone/12716/watch-the-navys-...

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