Comment Re: Don't jump to conclusions (Score 0) 202
So you're saying the US has been Marxist from the very beginning and never stopped?
Huh. You must use a different definition of Marxist.
So you're saying the US has been Marxist from the very beginning and never stopped?
Huh. You must use a different definition of Marxist.
The restrictions are a mix of reasonable nuisance management and paranoia about who is flying drones, what they can do, and chain of custody.
Beijing proper is a city with a population density of over 21,000 / km^2 -- so you can imagine the chaos if any tech enthusiast resident could fly a drone without a permit. Except for a couple of free zones in the outer boroughs, New York City restricts drone launcing and landings within the city to flights with a permit and flight plan, because otherwise the sky would be black with drones. Many cities -- both red and blue -- have zone restrictions for drone flights, and those currently hosting World Cup matches have tightened them for the duration of the tournament.
You might want to read up on how current hybrid vehicles actually work, 'cause it seems you have more than one misconception going on.
I have. For instance, my latest vehicle is the Ford F-159 XLT,, the full-hybrid model of the F-series pickup truck line. Power train is:
- 6 cylinder dual-turbo engine. (runs low power but approoximately doubles output when a lot is needed.)
- 47 HP motor-generator "pancake" on the engine side of the ttransmission, to scavenge / return power to./from a 1.5 kWhr lithium battery.
- 10-speed automatic transmission, working with the lithium battery;s main alternator to fine-tune match the engine/mogen to the current driving situation. Max power of engine plus hybrid mogen; 430 hp.
- full four wheel drive.
So it's primarily a gas-engine power train with an electric-car motor mechanically coupled to the engine shaft. Many other hybrids, from the venerable prius onward, are similar, with plug-in variants having a big scavaging/peaking battery good for pure electric operation of tens of miles rather than a minute or so and a wall-powered charger added.
What I'm looking for is essentially a pure electric - totally electronic "transmission" consisting of alternator(s) between the batteries and the motor(s), plus a tiny engine-generator able to burn gas and feed some teens of KW of charging power into the batteries when running down the road or parked near it.
Do the Waymo batteries use one of the lithium chemistries including cobalt, or a non-cobalt chemistry such as lithium iron phosphate?
Cobalt chemistries have a higher power/weight and energy/weight ratio, which made them the go-to chemistries for vehicle batteries. But they also produce oxygen when the cells overheat, leading to an unextinguishable runaway fire hazard: A burning cell makes enough heat to ignite the adjacent cells, so the whole assembly of them goes. Bad enough when it's a car's worth, but a disaster if it's a shipping-container sized module of a utility energy storage site. (And even worse when the site is a building full of racks, which someone had "protected" from fire with water-spraying, equipment-shorting system, so the whole site burns up, as happened recently with one in California creating a toxic mess.)
That's why purpose-built stationary lithium energy systems use non-cobalt chemistries - heavier, but a shorted cell just kills itself without getting hot enough to light off its neighbors.
I want to see inexpensive plugin hybrids.
But not like the current ones, which are primarily an engine/tranny powertrain with a motor/generator + small battery for scavenging downhill/braking energy for later accelleration/uphill/cruise/power-boost.
I want ones that are primarily a battery-electric with a small aux engine-generator (say 15-20 HP range), big enough to power crusing with a bit left over for gradually charging. That would let you range-extend by the size of your gas tank plus fillups (i.e. indefinitely if only gas is available) or go from battery empty to back on the road in a couple tens of minutes.
The backup engine would only run at max-efficiency speed and could use an atkins-like cycle (see "liquid piston engine") to get the max power out of the fuel. Most operation would use power-grid charging (when available and cheaper than fuel).
The greater metropolitan area of Mexico City uses around 7.5 billion kg (liters) of water per day.
(25,000,000 people using 300 liters)
Lithium is about 100 parts per billion in sea water.
So if you desalinated enough water to supply Mexico city, and sorted off all of lithium, that would be 750 kg per day, or 270 tonnes per year.
Annual global lithium production is about 290,000 tonnes per year.
Desalinate water for all of Mexico city, add an extra 0.1% to lithium production.
Color me unimpressed.
..."Okay. We've got a bipolar topic here I see"
No. There is no bi-polarity. And the people booing you are not mentally ill.
The students hate that you think it's the greatest new thing.
And they love the time it did not exist.
To use a much overused term where it's actually appropriate:
When you try to convince people their view is invalid and they are mentally ill (bipolar), you are not merely disagreeing with them; you are gaslighting them.
people. Just spray a little Ubik on it and it'll be all better.
Everyone wants roads near their house. If you don't have a road going to your house then your house is worthless. Once the government has a right of way for a road, expanding the road might be expensive, but it doesn't get the whole community involved in a series of lawsuits.
The only people that want to live near the train tracks, on the other hand, are the people out in the middle of the California desert that would love to have a way to easily get to the parts of California that aren't a wasteland. In the nice parts of California, every home owner within visual distance of the proposed route has hired a lawyer and vowed to fight the tracks to the death.
This means that California has built a tiny bit of tracks out in the middle of nowhere (near Bakersfield but not in Bakersfield). It also means that every single foot from this point on is likely to get even more astronomically expensive. The homeowners involved know that houses that are far enough away from the tracks so that their home value doesn't plummet are going to get a windfall as their prime real estate will become even more valuable with decent public transit. The rail system is going to be a serious amenity eventually. The homeowners near the tracks, on the other hand, are going to see a serious drop to their net worth. Everyone in California wants more light rail, but only if it doesn't go through their neighborhood.
It could easily be that California real estate is simply too expensive in this day and age for something like this to be built.
At a large US auto manufacturer our crew were responsible for commissioning controls systems and maintaining the drawings related thereto.
The HDDs on the CAD machines were simply NOT big enough to contain all the drawings so we had stacks of ZIP disks and both mobile (SCSI by parallel port) and internal (SCSI) readers for them.
One of the more experienced guys bought a CD burner (that was a $600.00 purchase at the time) and would make weekly backups for us. Blank CDs were $10.00 apiece at the time.
A couple of years into it we started hearing the "click of death". Thank you Butch; you saved our work!
Or would that just be a firehose?
Who watches the watchers?
One of the lessons we've had as the Federal, multi-branch nature of the US governmennt has frustrated Trump is that the government may be fucking us over, but it's not doing it in *unison*. It's doing it piecemiel, on the initiative of many interests working against each other, just as the framers intended. The motto on the Great Seal notwithstanding, there are myriad roadblocks to consolidating power in the hands of a single individual. It takes time and repeated failures. This is why the second Trump Adminsitration is worse than the first; they've figured out ways around things like Congressional power of the purse, put more of their henchmen in the judiciary, and normalized Congress lying down and letting the president walk all over them. It's a serious situation, although fortunately Trump isn't long for this world.
We can found no scientific discipline, nor a healthy profession on the technical mistakes of the Department of Defense and IBM. -- Edsger Dijkstra