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RHNB vs Floral Foam - Not the result you might think

Explosive Oil Fire at 2500fps - The Slow Mo Guys

newtboy says...

BAKING SODA!

Water sinks in oil, then flashes to steam, violently displacing the oil, oil that's already near or beyond the vaporization temperature. The hot oil, flying in all directions in tiny droplets, vaporizes, and you then have a small fuel air bomb. Great if you want to be hairless, but otherwise a bad bad thing, especially indoors. See above about burn units.

Baking soda floats on the oil making a film that stops it from reacting with oxygen, and stops the fire fast. It works for most fires if you have enough to smother it.

SFOGuy said:

Scary if you understand the image of a person pouring a pot full of water onto a flaming stove top oil fire (french fries, fried chicken, etc).

Snuff the fire out by throwing a lid on the pan.
Use an aerosol extinguisher.
Use a "K" class grease extinguisher, or Halon.

Don't throw water.
Burn units are sad, sad places.

*promote

watch uranium emit radiation

spawnflagger says...

pretty awesome, but 40 minutes of it felt like watching Nyan Cat. (I skipped forward though). It does slow down and eventually stop (I guess when the alcohol vapor is gone, but couldn't translate).

Flaming Bottle Rockets - Tales from the Prep Room

newtboy says...

I actually did this as my final chemistry experiment in High School. We used rubbing alcohol (75 and 99%) and got many different results.
Sometimes it would be a jet. Sometimes it would make a 'plane' of fire that hovered 1/2 way down the bottle. Sometimes it made a ball of fire that bounced below the neck. Sometimes it flashed repeatedly, igniting the entire bottle at once and repeating. Different results could be gained by rolling the bottle around, spreading the fuel and creating a denser vapor load, or blowing O2 into the bottle before lighting.
We used a glass 5 gallon bottle (it got HOT). I was surprised he only seemed to get the jet reaction.
(EDIT: I forgot, at the end the teacher brought out some liquid ether for me to try. Everyone (except me) stepped back for that one, afraid it might blow the bottle up)
Almost downvote for the last one...WTF guy?

Climate Change - Veritasium

bcglorf says...

Kudos, I'd just like to really highlight two of the good points you make.

First, Tesla motors is huge. When I said electric cars, I didn't mention them by name but was thinking specifically of them. They have proven that electric cars are the future and are coming quickly.

The second is as Tyson pointed out, the most important metric is energy coming into the planet compared to energy going out. Temperatures fluctuate to many other variables. Particularly if the oceans are absorbing or releasing energy, temperatures as we experience them will shift on that and muddy the perception of what's actually happening to the overall planet's energy balance and long term change. In the late 80's we started measuring the energy in and out of the atmosphere with satellites. There was an observed increase between late 80's and late 90's in the energy imbalance. That means not only was more energy coming in than going out over that time, but the excess staying in was getting higher. With increasing CO2 emissions, that is exactly what we expect. An increased overall greenhouse effect should see the energy imbalance growing quite steadily as the effect gets stronger and stronger. Now, the IPCC's fifth assessment report has the the longer term data from those same and new satellites. The data shows that since 2001 there is strong agreement that the data shows NO TREND. That doesn't mean the energy in the planet hasn't been increasing. It means the rate of extra energy coming in hasn't gone up or down statistically since 2001. It means the overall greenhouse effect has been entirely stagnant for a little more than the last decade. Things are warming, but no faster than they were ten years ago.

I hope that's not to technical, but it paints a non-catastrophic picture. It also gives a superb metric to measure climate models against going forward. The models universally are projected on a steadily accelerating greenhouse effect as CO2 emissions rise. If the measured results of the last decade continue to not reflect that much longer, we have more reassessing to do. As noted in the IPCC, the effect of water vapor and clouds to increasing temperature is poorly modelled right now. If we are lucky the uncertainty of the sign on it as feedback is resolved to find it is a negative feedback. Meaning, as things warm, more clouds appear and reflect more energy back out. As things cool, less clouds appear and more energy comes in. And yeah, that's my own hope, and it is not the majority opinion within the scientific community as represented by the IPCC. They do acknowledge it as a possibility, but a less likely one. That said, the models they base that opinion on do not match the satellite energy measurements, and that one uncertainty would explain it rather well. My fingers are still crossed. More reasons for my optimism is the IPCC projections through 2100. If you look close, the actual temperature plotted against the projections has the actual following the very coolest of projections so far. Again, that lends hope that something like water vapor is either working for us, or not as badly against us as is currently modelled.

MilkmanDan said:

I used to be a pretty strong "doubter", if not a denier. I made a gradual shift away from that, but one strong instance of shift was when Neil Degrasse Tyson presented it as a (relatively) simple physics problem in his new Cosmos series. Before we started burning fossil fuels, x% of the sun's energy was reflected back into space. Now, with a higher concentration of CO2, x is a smaller number. That energy has to go somewhere, and at least some of that is going to be heat energy.

Still, I don't think that anything on the level of "average individual citizen/household of an industrial country" is really where anything needs to happen. Yes, collectively, normal people in their daily lives contribute to Climate Change. But the vast majority of us, even as a collective single unit, contribute less than industrial / government / infrastructure sources.

Fossil fuels have been a great source of energy that has massively contributed to global advances in the past century. BUT, although we didn't know it in the beginning, they have this associated cost/downside. Fossil fuels also have a weakness in that they are not by any means inexhaustible, and costs rise as that becomes more and more obvious. In turn, that tends to favor the status quo in terms of the hierarchy of industrial nations versus developing or 3rd world countries -- we've already got the money and infrastructure in place to use fossil fuels, developing countries can't afford the costs.

All of this makes me think that 2 things need to happen:
A) Governments need to encourage the development of energy sources etc. that move us away from using fossil fuels. Tax breaks to Tesla Motors, tax incentives to buyers of solar cells for their homes, etc. etc.
B) If scientists/pundits/whoever really want people to stop using fossil fuels (or just cut down), they need to develop realistic alternatives. I'll bring up Tesla Motors again for deserving huge kudos in this area. Americans (and in general citizens of developed countries) have certain expectations about how a car should perform. Electric cars have traditionally been greatly inferior to a car burning fossil fuels in terms of living up to those expectations, but Tesla threw all that out the window and made a car that car people actually like to drive. It isn't just "vaguely functional if you really want to brag about how green you are", it is actually competitive with or superior to a gas-engine car for most users/consumers (some caveats for people who need to drive long distances in a single day).

We need to get more companies / inventors / whoever developing superior, functional alternatives to fossil fuel technologies. We need governments to encourage and enable those developments, NOT to cave to lobbyist pressure from big oil etc. and do the opposite. Prices will start high (like Tesla), but if you really are making a superior product, economy of scale will eventually kick in and normalize that out.

Outside of the consumer level, the same thing goes for actual power production. Even if we did nothing (which I would certainly not advocate), eventually scarcity and increased difficulty in obtaining fossil fuels (kinda sad that the past 2 decades of pointless wars 95% driven by oil haven't taught us this lesson yet, but there it is) will make the more "green" alternatives (solar, wind, tidal, nuclear, whatever) more economically practical. That tipping point will be when we see the real change begin.

Climate Change - Veritasium

bcglorf says...

Amateur videos on you tube by guys who clearly haven't read or understood the scientific journal articles on the subject are part of the problem and confusion.

The point of recycling is to reduce energy use and transportation in manufacturing materials... So yeah, it's part of the solution and not to be thrown away.

Yes, the plant is warming, and scientists are agreed on that.
Yes, humans are adding significant CO2 to the atmosphere which contributes to warming.
What is the severity of the warming over the next 100 years, and what difference do our actions today make, and what cost do those actions have?

See the first 2 points are agreed and help understand some of the problem. The trick though is that the severity is still known with less certainty, read the details in the latest IPCC AR5 report if you doubt me. The error bars within the scenarios(different carbon emissions we reduce or increase to) span multiple degrees of temperature. The error bars are only as accurate as the current days models, which still are uncertain of the sign to attribute to water vapor as a feedback. The water vapor that contributes more to the greenhouse effect than all other GHG's combined. How great is the economic cost of reducing our emissions to meet each scenario? That's no in the IPCC report. What is the alternative cost of adapting to the temperature ranges if we just continue emitting? Again not there.

The trouble is there DOES still exist uncertainty on a great many aspects of the problem. Random amateurs proclaiming otherwise on youtube doesn't change that. Until we've got a good grasp on the cost/benefit differences between reducing emissions and adapting to changes, we can't make any claims on action X is obvious because of climate change.

Now, I'm not advocating we do nothing. Electric cars are a huge opportunity, and the technology is finally hitting the threshold of being cheaper than gas. Adopting that technology makes economic sense. A fringe benefit is that it reduces emissions from transportation drastically too.

There are solutions other than redistribution of wealth through naive/blind carbon taxes.

Stripping the paint off a car with a 1000 watt laser

newtboy says...

That's pretty awesome, but I couldn't help but think that he's vaporizing paint that's known to be cancer causing, and not wearing a respirator. I wonder how dangerous that really is.
Also, does it eat rust in the same way media blasting will? If so...want want want want want....WANT!!!!

F/A-18C Breaks the Sound Barrier on a close pass

Liftoff for NASA's Orion Spaceship

newtboy says...

Hmmmm. So the thing that looks like the rocket is just the tip of the rocket, and the thing that looks like the flame trail is the rest of the rocket shrouded in clouds/vapor? Interesting, looking close I see you are likely correct. But then what makes the nozzles look farther apart than they appear on the ground?

Zawash said:

It's viewed at a very long range, through fog and clouds. The perspective is because of the very long range, and the image is very dimmed because of the cloud cover.
The image is underexposed, and therefore we can only clearly see the very brightest part of the image, which is the flames inside the thrusters - that part is hidden in severely overexposed flare blooms in all the other recordings. The rest of the rocket is barely seen through the clouds, and would have been a bit more visible if the image had a lighter exposure, but then the nozzles would have been bright blooms, and we wouldn't have been able to see any details inside.
If you look closely, you faintly see not only the spaceship, but also the huge flickering flame columns behind the nozzles.

How To Roll A Blunt featuring Afroman

newtboy says...

No. Once it's been vaporized, the leftovers have no psychedelics left. The THC and CBN, along with most other volatiles are vaporized at relatively low temps, so you're left with cellulose and other non active plant material. You could bake with it, but it won't get you 'high' a second time.

PlayhousePals said:

PLUS you can "bake" with the remnants and have some kick ass edibles! No waste whatsoever. WooHoo

How To Roll A Blunt featuring Afroman

shang says...

I only use my vaporizer , no smoke, no odor, and very tiny amount get you higher than all that wasted weed used in joint. You get higher vaping than you can smoking a joint or bong.

Bird on high voltage line get fried - caught on dashcam

grahamslam says...

Good catch, because when I had first seen this video, I thought that dark thing falling was another bird, and I was wondering where it came from.

Also, notice the insulation vaporizes from the whole power line between the two poles from one side of the intersection to the other.

deathcow said:

crazy how it exploded the light fixture near by..... i am thinking in general not a safe thing to be even standing around the area

Bill Nye: You Can’t Ignore Facts Forever

Trancecoach says...

@dannym3141, I understand that you are "stepping out of the debate," but, for your edification, I'll respond here... And, for the record, I am not "funded" by Big Oil, Big Coal, Big Solar, or Big Green. Nor am I a professor of climate or environmental science at a State University (and don't have a political agenda around this issue other than to help promote sound reasoning and critical thinking). I do, however, hold a doctorate and can read the scientific literature critically. So, in response to what climate change "believers" say, it's worth noting that no one is actually taking the temperature of the seas. They simply see sea levels rising and say "global warming," but how do they know? It's a model they came up with. But far from certain, just a theory. Like Antarctica melting, but then someone finds out that it's due to volcanic activity underneath, and so on.

And also, why is the heat then staying in the water and not going into the atmosphere? So, they then have to come up with a theory on top of the other theory... So the heat is supposedly being stored deep below where the sensors cannot detect it. Great. And this is happening because...some other theory or another that can't be proven either. And then they have to somehow come up with a theory as to how they know that the deep sea warming is due to human activity and not to other causes. I'm not denying that any of this happens, just expressing skepticism, meaning that no one really knows for sure. That folks would "bet the house on it" does not serve as any proof, at all.

The discussion on the sift pivots from "global warming" to vilifying skeptics, not about the original skepticism discussed, that there is catastrophic man-caused global warming going on. Three issues yet to be proven beyond skepticism: 1) that there is global warming; 2) that it is caused by human activity; 3) that it's a big problem.

When I ask about one, they dance around to another one of these points, rather than responding. And all they have in response to the research is the IPCC "report" on which all their science is based. And most if not all published "believers" say that the heat "may be hiding" in the deep ocean, not that they "certainly know it is" like they seem to claim.

They don't have knowledge that the scientists who are actively working on this do not have, do they? It's like the IRS saying, "My computer crashed." The IPCC says, "The ocean ate my global warming!"

Here are some links worth reading:

http://online.wsj.com/news/articles/SB10001424052702304636404577291352882984274

And, from a different rebuttal: "Referring to the 17 year ‘pause,’ the IPCC allows for two possibilities: that the sensitivity of the climate to increasing greenhouse gases is less than models project and that the heat added by increasing CO2 is ‘hiding’ in the deep ocean. Both possibilities contradict alarming claims."

Here's the entire piece from emeritus Alfred P. Sloan Professor of Meteorology, Department of Earth, Atmospheric and Planetary Sciences at MIT, Dr. Richard Lindzen: http://www.thegwpf.org/richard-lindzen-understanding-ipcc-climate-assessment/

And take your pick from all of the short pieces listed here: http://www.drroyspencer.com/2011/08/is-gores-missing-heat-really-hiding-in-the-deep-ocean/

And http://joannenova.com.au/2013/09/ipcc-in-denial-just-so-excuses-use-mystery-ocean-heat-to-hide-their-failure/

"Just where the heat is and how much there is seems to depend on who is doing the modeling. The U.S. National Oceanographic Data Center ARGO data shows a slight rise in global ocean heat content, while the British Met Office, presumably using the same data shows a slight decline in global ocean heat content."

http://www.arizonadailyindependent.com/2013/10/03/the-ocean-ate-my-global-warming-part-2/#sthash.idQttama.dpuf

Dr. Lindzen had this to say about the IPCC report: "I think that the latest IPCC report has truly sunk to a level of hilarious incoherence. They are proclaiming increased confidence in their models as the discrepancies between their models and observations increase."

http://www.arizonadailyindependent.com/2013/10/01/the-ocean-ate-my-global-warming-part-1/#sthash.oMO3oy6X.dpuf

So just as "believers" can ask "Why believe Heartland [financier for much of the NPCC], but not the IPCC," I can just as easily ask "Why should I believe you and not Richard Lindzen?"

"CCR-II cites more than 1,000 peer-reviewed scientific papers to show that the IPCC has ignored or misinterpreted much of the research that challenges the need for carbon dioxide controls."

And from the same author's series:

"Human carbon dioxide emissions are 3% to 5% of total carbon dioxide emissions into the atmosphere, and about 98% of all carbon dioxide emissions are reabsorbed through the carbon cycle.

http://www.eia.gov/oiaf/1605/archive/gg04rpt/pdf/tbl3.pdf

"Using data from the Department of Energy and the IPCC we can calculate the impact of our carbon dioxide emissions. The results of that calculation shows that if we stopped all U.S. emissions it could theoretically prevent a temperature rise of 0.003 C per year. If every country totally stopped human emissions, we might forestall 0.01 C of warming."

http://www.arizonadailyindependent.com/2013/08/01/climate-change-in-perspective/#sthash.Dboz3dC5.dpuf

Again, I have asked, repeatedly, where's the evidence of human impact on global warming? "Consensus" is not evidence. I ask for evidence and instead I get statements about the consensus that global warming happening. These are two different issues.

"Although Earth’s atmosphere does have a “greenhouse effect” and carbon dioxide does have a limited hypothetical capacity to warm the atmosphere, there is no physical evidence showing that human carbon dioxide emissions actually produce any significant warming."

Or Roger Pielke, Sr: http://wattsupwiththat.com/2011/09/20/pielke-sr-on-that-hide-and-seek-ocean-heat/

Or Lennart Bengtsoon (good interview): "Yes, the scientific report does this but, at least in my view, not critically enough. It does not bring up the large difference between observational results and model simulations. I have full respect for the scientific work behind the IPCC reports but I do not appreciate the need for consensus. It is important, and I will say essential, that society and the political community is also made aware of areas where consensus does not exist. To aim for a simplistic course of action in an area that is as complex and as incompletely understood as the climate system does not make sense at all in my opinion."

http://www.spiegel.de/international/world/meteorologist-lennart-bengtsson-joins-climate-skeptic-think-tank-a-968856.html

Bengtsson: "I have always been a skeptic and I believe this is what most scientists really are."

What Michael Crichton said about "consensus": "Let’s be clear: the work of science has nothing whatever to do with consensus. Consensus is the business of politics. Science, on the contrary, requires only one investigator who happens to be right, which means that he or she has results that are verifiable by reference to the real world. In science, consensus is irrelevant. What is relevant is reproducible results. The greatest scientists in history are great precisely because they broke with the consensus."

Will Happer on the irrelevancy of more CO2 now: "The earth's climate really is strongly affected by the greenhouse effect, although the physics is not the same as that which makes real, glassed-in greenhouses work. Without greenhouse warming, the earth would be much too cold to sustain its current abundance of life. However, at least 90% of greenhouse warming is due to water vapor and clouds. Carbon dioxide is a bit player. There is little argument in the scientific community that a direct effect of doubling the CO2 concentration will be a small increase of the earth's temperature -- on the order of one degree. Additional increments of CO2 will cause relatively less direct warming because we already have so much CO2 in the atmosphere that it has blocked most of the infrared radiation that it can. It is like putting an additional ski hat on your head when you already have a nice warm one below it, but your are only wearing a windbreaker. To really get warmer, you need to add a warmer jacket. The IPCC thinks that this extra jacket is water vapor and clouds."

Ivar Giaever, not a climate scientist per se, but a notable scientist and also a skeptic challenging "consensus": http://www.telegraph.co.uk/earth/environment/climatechange/8786565/War-of-words-over-global-warming-as-Nobel-laureate-resigns-in-protest.html

Even prominent IPCC scientists are skeptics, even within the IPCC there is not agreement: http://www.climatedepot.com/2013/08/21/un-scientists-who-have-turned-on-unipcc-man-made-climate-fears-a-climate-depot-flashback-report/

And for your research, it may be worth checking out: http://www.amazon.com/The-Skeptical-Environmentalist-Measuring-State/dp/0521010683

DMT Enigma

shagen454 says...

Questions: How did you take it orally or by vaporizing?

What weight was it that you took? Did you mix it with anything?
What techniques did you utilize for the spice experience?

AeroMechanical said:

I've never found anything mystical about psychedelic drugs, including DMT. As I see it, they just throw a wrench into the works of your brain and thus your perception of consciousness. It can be very interesting and enlightening, particularly as a visceral lesson in how subjective 'reality' is, but it isn't in any way mystical to me.

How to fix a new USA gas can

Stormsinger says...

I don't think his definition of "fix" is the same as mine. I guess it depends on whether you have enough brainpower to operate the anti-vapor valve or not. Personally, I don't care to have the car or garage smelling like gasoline, so I prefer to avoid the fumes.



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