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Colorado track will test super-speedy transit

newtboy jokingly says...

Ok, I'm nit picking, but you don't accelerate at mph, acceleration is measured in mphps (miles per hour per second).

"It can accelerate pods at up to 200 mph."

Not a good sign in a press release from a physics intensive tech company.

newtboy (Member Profile)

Making Solar Panels With A Particle Accelerator

Near Miss

newtboy says...

He accelerated to make the light...that's his mistake.

According to this study, even without antilock brakes and accounting for reaction time, 30m is plenty of distance to stop at that speed. Sorry.
http://www.bikesafer.com/detail/braketime.html

Not 100% of the time. If the light had turned red while the car turning was in the intersection waiting to turn (almost what happened here), then they turned and a car runs the light and hits them, going straight, it's still the second cars fault.
BUT
That argument still ignores reality, which doesn't care who is legally at fault, it's the biker that will pay the price, so logically it's the biker that needs to be more careful. In this instance, he wasn't careful enough...or was, but just barely.

bcglorf said:

You keep saying that the biker 'committed' to making the light.

As I pointed out, I thought pretty clearly, when the light turned yellow, the driver, based on his speed and time of the video, was less than 30m from the intersection when most any stopping distance guide lists minimum stopping distances as greater than 30m. Physics had him committed to the intersection already.

As for proceeding with caution, I don't disagree, but 100% of the time the person crossing lanes going left is responsible for being sure that it is safe to do so. The driver proceeding through straight should do their best as well, but the responsibility is on the person crossing/changing lanes.

Near Miss

Scientist Blows Whistle on Trump Administration

newtboy says...

Well, that's one step in the right direction that you now admit the undeniable fact that global temperatures are rising....finally.
Interesting, then what is your theory, seeing as natural cycles would have our temperatures falling right now, but since the industrial revolution they've been trending higher. You can't blame volcanos, there've been no massive volcanic releases to cause it, only minor ones that barely register.

Yes, true, the Paris accord is too little too late, that's not somehow condemnation of the idea that global climate change is man made. Only one nation even questions that, and really only <1/3 of that nation.
Did you ever watch An Inconvenient Truth....I don't think so, because it said no such thing, I think you're repeating what a talking head told you it said. He did say we would probably see obvious effects by now...and we do. He did not say we would all be dead, not even in 100 years.

Hundreds of thousands, if not millions, are not still here, they are dead of famine and wars caused by, and causing, migrating populations. Most of East Africa is in severe drought as bad or worse than Ethiopia in the 80's, just like Gore warned would be increasingly more likely due to climate change, and India and Asia are threatened with losing their main sources of water because of accelerated glacial melting.

bobknight33 said:

I do believe that temperatures are changing but to say man is mostly at fault -- I don't buy it. Even those promoting man made warming concede that even the Paris accord will not truly change the doomsday course we are on.

Al Gore's Inconvenient truth movie has the planet basically dead today -- but we are all here. Kind of the boy crying woof.

When road rage goes terribly wrong

vil says...

I see a portion of deservedness there, though I would not go so far as to actually personally wish death as punishment upon the poor guy. But should something bad have happened to him by accident it would have come about in a small part because of his own wrong decision, thus not entirely undeservedly. I am glad he was lucky.

Stepping on the gas was just a bad reaction. Driving around the problem or slowing down is safer and more likely to succeed in scenarios where trouble unfolds ahead of you on the road. Accelerating through the scene of an accident increases risk for everyone involved.

ChaosEngine said:

Saying that he even partially deserved to die is going a bit far IMO.

Probably should have measured that better...

ChaosEngine says...

Yeah, done that (the landing on the flat, not the broken femur). That sounds pretty unpleasant.

I still stand by my statement though, especially in the case of something like this where you're trying to clear an obstacle. It's a lot easier to scrub off a bit of speed at the last minute than to accelerate to clear the road!

Khufu said:

This isn't always the case, I had a friend who hit a jump on a ski hill with too much speed... he cleared the slope and landed on the flat below. Snapped his left femur, *cringe*.

The Paris Accord: What is it? And What Does it All Mean?

Diogenes says...

I understand, and "pollution per capita" is a logical argument. But from my point of view there are some critical problems and many flaws with following such reasoning. For example:

The US isn't the greatest emitter of Co2 per capita, but when that's brought up...the argument falls back to emissions in absolute terms. Many would say that that's hypocritical.

Wealth inequality is particularly bad in the US, with the top 20% of the population holding upwards of 88% of all wealth (while the total wealth of individuals isn't GDP, it does correlate with income flow). Doesn't this skew GDP per capita, holding the poor in the US to an unfair standard, vis a vis emissions? If it doesn't, then how is it unfair to poor, rural Chinese?

No international organizations agree on the definition of a "developing" country. Without this, aren't these types of arguments extremely subjective and open to abuse? The point being that there are very, very few "apples-to-apples" comparisons available. For example, would it be a fair comparison if I told you that China's per capita Co2 emissions exceeded the per capita emissions of the EU starting back in 2014?

But you're right...in that the US has polluted the most in absolute terms historically (with China catching up pretty fast). We didn't have a "God-given" right to do it; for most of it, we didn't even know that "it" (Co2) was a pollutant.

You're also right that as individual Americans we have more power to demand change. I understand and accept the dangers of climate change, and I very much want to do something about it. This is why I'm so frustrated with our current administration.

I just want you to understand that I'm not strictly pro-US and/or anti-China. In my opinion, climate change is giving us one resource to either take advantage of or to squander. That resource is time. And time isn't going to make accommodations for any nation, big or small, rich or poor.

This is why I'm troubled by a government like the CCP, that has plans to accelerate their emissions. We know better now (re. Co2), and so such actions on their part are unreasonably selfish. They know their actions will likely hurt or kill all of us, and yet they continue...with the hope that other nations will sacrifice so much as to be properly weakened while they themselves are strengthened.

I understand that in a perfect world, we'd have an equality of outcome. Wouldn't that be great? But we don't have the time left to make most of South America, much of Asia and virtually all of Africa economic equals. What we can do is get our own emissions down to as close to zero as possible, and help these nations build up an infrastructure using green energy. In this way, maybe we can try to foster at least an equality of opportunity energy-wise. The Chinese government has the funds to not only fully transform their own nation, but also to help to some degree in the aforementioned global initiative. But instead of being honestly proactive, they're creating a new cold-war mindset. This is not only wasting time, but also resources (both their own and those of the US in seeking to maintain their strategic edge militarily) that could be better used to help the less fortunate.

So what do we do? Well, I'm not entirely sure. But I can tell you that having other countries paint the US as a villain in this issue, and China as a saint certainly isn't helping.

dannym3141 said:

What i was talking about was division by number of people that live there. That way you're not unfairly giving US citizens a "god" given right to pollute the Earth more. Maybe that's why China is gaming the system, if the system was gaming them.

The Paris Accord: What is it? And What Does it All Mean?

Diogenes says...

I don't support our pulling out of the Paris Accord. I think it was the wrong thing to do. And I don't mind GDP growth for other nations, even China. What I do mind is the notion that the world's greatest polluter can increase its amount of Co2 emitted and still be touted as successfully contributing to reduced Co2 emissions worldwide.

"Telling China to limit their total CO2 emission to pre 2005 values is like telling a teenager in the middle of puberty to limit their food consumption to the same amount as when they were 9 years old. It's just not an option."

Who's telling China to do that? I only suggested that China's pledge to reduce their Co2 emissions to 60-65% of their 2005 levels as a ratio of GDP isn't all that it's made out to be. Your analogy is faulty because food consumption is necessary for life, but spending billions on destroying coral reefs while making artificial islands in the South China Sea is not. The CCP certainly has the funds necessary to effect a bigger, better and faster transition to green energy. Put another way, I believe that China has the potential to benefit both their people through economic growth and simultaneously do more in combating global climate change. I simply don't trust their current government to do it. I've been living in China now for over 19 years...and one thing that strikes me is the prevalence of appearance over substance. Perhaps you simply give them more credence in the latter, while my own perception seems to verify the former.

"But their total emissions is still increasing! This is just a farce and they're doing nothing!"

The second half of your statement is a strawman. They are doing something, just not enough, imho. And China's emissions have yet to plateau, therefore it's not an achievement yet.

"Now you may say "China's not putting funds towards green energy!" Well, that's also not true. China already surpassed the US, in spending on renewable energy. In fact, China spent $103 billion on renewable energy in 2015, far more than the US, which only spent $44 billion. Also, they will continue to pour enormous amounts of resources into renewable energy, far more than any other country."

This is also misleading. What I'm suggesting is that China could do more. It's certainly a matter of opinion on whether the Chinese government is properly funding green initiatives. For example, both your article and the amounts you cite ignore the fact that those numbers include Chinese government loans, tax credits, and R&D for Chinese manufacturers of solar panels...both for domestic use AND especially for export. The government has invested heavily into making solar panels a "strategic industry" for the nation. Their cheaper manufacturing methods, while polluting the land and rivers with polysilicon and cadmium, have created a glut of cheap panels...with a majority of the panels they manufacture being exported to Japan, the US and Europe. It's also forced many "cleaner" manufacturers of solar panels in the US and Europe out of business. China continues to overproduce these panels, and thus have "installed" much of the excess as a show of green energy "leadership." But what you don't hear about much is curtailment, that is the fact that huge percentages of this green energy never makes its way to the grid. It's lost, wasted...and yet we're supposed to give them credit for it? So...while you appear to want to give them full credit for their forward-looking investments, I will continue to look deeper and keep a skeptical eye on a government that has certainly earned our skepticism.

""But China is building more coal plants!" Well that's not really true either. China just scrapped over 100 coal power projects with a combined power capacity of 100 GW . Instead, the aforementioned investments will add over 130GW in renewable energy. Overall, Chinese coal consumption may have already peaked back in in 2013."

Well, yes, it really is true. China announcing the scrapping of 103 coal power projects on January 14th this year was a step in the right direction, and certainly very well timed politically. But you're assuming that that's the entirety of what China has recently completed, is currently building, and even plans to build. If you look past that sensationalist story, you'll see that they continue to add coal power at an accelerating pace. As to China's coal consumption already having peaked...lol...well, if you think they'd never underreport and then quietly revise their numbers upwards a couple of years later, then you should more carefully review the literature.

"So in the world of reality, how is China doing in terms of combating global warming? It's doing a decent job. So no "@Diogenes", China is NOT the single biggest factor in our future success/failure, because it is already on track to meeting its targets."

Well, your own link states:

"We rate China’s Paris agreement - as we did its 2020 targets - “medium.” The “medium“ rating indicates that China’s targets are at the last ambitious end of what would be a fair contribution. This means they are not consistent with limiting warming to below 2°C, let alone with the Paris Agreement’s stronger 1.5°C limit, unless other countries make much deeper reductions and comparably greater effort."

And if the greatest emitter of Co2 isn't the biggest factor, then what is? I'm not saying that China bears all the responsibility or even blame. I'm far more upset with my own country and government. But to suggest that China adding the most Co2 of any nation on earth (almost double what the US emits) isn't the largest single factor that influences AGW...I'm having trouble processing your rationale for saying so. Even if we don't question if they're on track to meet their targets, they'll still be the largest emitter of Co2...unless India somehow catches up to them.

To restate my position:
The US shouldn't have withdrawn from Paris.
China is not a global leader in fighting climate change.
To combat climate change, every nation needs to pull together.
China is not "pulling" at their weight, which means that other nations must take up more of the slack.
Surging forward, while "developed" nations stagnate will weaken the CCP's enemies...and make no mistake, they view most of us as their enemies.
The former is part of the CCP's long-term strategy for challenging the current geopolitical status quo.
I believe that the Chinese Communist Party is expending massive amounts of resources abroad and militarily, when the bulk of those funds would better serve their own people, environment and combating the global crisis of climate change.

The Paris Accord: What is it? And What Does it All Mean?

MilkmanDan says...

Excellent. But, I have a reaction to your (Green's?) text in the description.

1. Nostalgia is a motivator. But I think it tends to be a *strong* motivator only of individuals, not of collective societies. If Trump has nostalgia for fossil fuels (personally I think his motivations lie elsewhere), the good news is that that nostalgia won't be very contagious to American citizens. At least not for long.

People like Elon Musk / Tesla are making it clear that electric and renewables are the sexy high-tech future. That appeal to our vanity will be much more effective as a "carrot" motivation, as compared to a "stick" with carbon taxes etc.


2. This essentially boils down to an industrial version of Isolationism. Trump represents a bigger push in that direction by far compared to being motivated by nostalgia. BUT, I think that trying to explain that resistance in him and others purely through that anti-globalization lens misses some things.

Just as nostalgia is a better motivator for individuals than societies, altruism (if you believe it can exist) functions the same way. And that's 90% of what the Paris Accords are: altruism.

On paper, it makes sense for us as individuals in the US to acknowledge that we got a disproportionate level of advancement out of fossil fuel usage through our history. As individuals, we can see the undeniable truth in that. But ask us to act -- collectively -- on that and watch as our collective altruistic tendencies are drastically reduced compared to the sum of our individual altruistic tendencies.

That's not really evil, that's just human nature. But it is precisely the reason that I feel that encouraging people like Elon Musk is by far the superior way to lead us into the future. Tesla makes cars that are better than competing ICE vehicles for many/most use-cases. And not "better" in the sense that our individual sense of altruism gets triggered to reward our brain's pleasure center because we've prevented some Pacific islander's house from getting wiped out in a sea level rise by buying one. No, better in real, measurable criteria: less expensive to operate, better performance / top speed / acceleration, features ... potentially even panty-dropping sexiness. That shit can motivate us as a collective society much more reliably than altruism.

And that's why I think it is more important to encourage the Elon Musks of the future than it is to get TOO overly concerned about the Donald Trumps of the present. Although admittedly, there's certainly ways to try to do both.

Rethinking Nuclear Power

Asmo says...

Coal is responsible for many orders of magnitude more deaths and radioactive emissions than all nuclear incidents combined. But people don't care about simple things like facts or numbers. Talking about renewables when a significant portion of baseload power is still produced by coal is pointless. Let people have their feel good green tech (made in China, powered by a lot of coal of course ; ), but replace coal with modern nuke.

Denying the place of recent generation nuclear power as a viable strategy of supplying cleaner baseload power is much like denying man made climate change. Fucking moronic.

Thorium salt reactors do produce waste, but it's incredibly safe compared to breeder/lwr reactor byproducts. In fact, you can introduce older reactor waste in to the liquid mix in small amounts and the LFTR will break it down to less harmful components by accelerating decay in the core.

http://lftrnow.com/

"LFTRs can also burn radioactive “waste” we are currently storing, made from the LWR units of today. We could actually reduce our radioactive waste using LFTRs and other Molten-Salt Reactors (MSRs) (more: https://www.youtube.com/watch?v=i1fqB6p9pgM)."

So LFTR is a strategy for both power supply and cleaning up existing waste storage. Who'da thunk it??

spawnflagger said:

I don't see nuclear having a renaissance anytime soon...
Solar and Wind are already cheaper, don't emit CO2, and don't produce nuclear waste that has to be transported and stored in exotic containers for thousands of generations.

Thorium salt reactors also produce waste.

Nuclear does make a useful energy source for NASA space probes though.

Everything Wrong With Aliens In 15 Minutes Or Less

radx says...

I was about to argue that hypersleep would be neccessary even on short trips just to survive the two acceleration burns, but then I remembered that they were free-floating inside their tubes, because Cameron added "gravityEnabled = 0" to the settings of the Alien franchise.

NIO EP9 Breaks the Nürburgring Nordschleife Lap Record

Jinx says...

What is the limiting factor for acceleration in electric cars? Is it just traction? Long live electric, but I do sort of miss the gear changing (especially downshifts )

newtboy (Member Profile)

Zawash says...

Thanks!
I bet the acceleration must feel insane!

newtboy said:

Holy crap, that is quick! I'm glad to see electric cars come into their own, and own gasoline powered cars in the process.
*quality *engineering



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