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Graphene Batteries Hit the Market

Why Chernobyl actually exploded

Mordhaus (Member Profile)

Triumphant first flight under FAA's new drone testing rules

newtboy says...

I'll second that.
I built a nearly identical plane 25 years ago, it cost about $125, and another $200 for the controller setup. It's wings were made of fiberglass/graphite spars inside dense foam cores...easy to build, easy to repair, and didn't hurt if it hit a person. (it did only have about a 15 min flight time without thermals, but batteries and motors are better now) Why are they going with carbon fiber for a non-combat fixed wing drone over fiberglass and/or foam (or are they testing combat drones)? Is it just to make it cost more? Why not just CNC mill them out of titanium billets? ;-)

$50K? Something smells here. Should be under $1K unless there's a lot we aren't seeing. Maybe it's all in the electronics and optics (it would need a bit more than a cell phone camera), but it still seems exorbitant. I think it could be more efficient to make them cheap and disposable/recyclable rather than 'hardened'.

Samaelsmith said:

"Less than $50,000 to make"? It's a radio controlled plane for fuck's sake!

The Super Supercapacitor

The Super Supercapacitor

dannym3141 says...

Seems legit (see below link). Apparently works because it's so thin and therefore has such low mass, and yet it's still latticed graphite. It has all the conductive properties of graphite but flattened to 1 atom thick. So we're talking about capacitance per kg (grams in practicality but kg is SI) and when you get a bunch of them arranged into a capacitor, you'd have more capacitance for the mass of your capacitor than with an ordinary one.

http://bucky-central.me.utexas.edu/RuoffsPDFs/179.pdf
(that's straight from the wikipedia reference)

As a side note, if it's sciencey and you can't find any pdf or some sort of publication on the matter then take it with a pinch of salt. Conversely a pdf or publication doesn't make it true

The Super Supercapacitor

nock says...

So let me get this straight:

1. Smear graphite paste on a CD/DVD.
2. Put said disc into laser drive.
3. Take out graphene disk
4. Something magical.
5. Charge it.
6. Use your super capacitor.

Seconds From Disaster : Meltdown at Chernobyl

GeeSussFreeK says...

Indeed, I am all for reactor simplification, the reactor I want to see constructed could theoretically be nearly completely made on a factory line then shipped and installed very simply. The molten salt reactor concept is just a bunch of pipes with a graphite core. Most of the Gen4 reactors have this goal, and while large construction projects do mean jobs, usually good jobs...they are also costs, and if we want China and India to adopt greener power systems, they need to be cheaper than coal.

http://www.youtube.com/watch?v=N2vzotsvvkw

I am going to sift this after I post, but it is a short look into reactors in general, and why the MSR and other potential Gen4 concepts could eliminate that huge capital and labor cost. And nearly completely eliminate radioactivity problems to the general public.

300 billion is actually not to much money when you get down to it. Each year, the global economy spends up to 10 trillion dollars on dino fuel technology. Considering the reliability of NPPs and the nearly 90% load rate over the course of many years...those costs are really really good! Typically speaking, when you consider the costs of decommissioning, waste transportation, nuclear generally ends up being about on par with coal...mostly because nuclear plants last so darn long, over 60 years for some of our gen2 plants in the US and still going strong! Compare that to the 150 billion or so Germany has spent on solar project to their total ACTUAL output and it is a very telling tail. Even more so when you look at total carbon emissions of Germany compared to France.

Waste is actually what made me anti-nuclear myself. My introduction to caring (negatively) about nuclear was the Fukushima Daiichi incident. But after learning more about that situation, I actually really started to appreciate nuclear more. No one died as a result of FD failure, the containment building stopped most of the most harmful radiation, and the stuff that did get out is the really mild stuff (stuff with the million year half lives). I don't want to downplay this, it is still a very serious industrial mess to clean up, but compared to the 20 thousand people who died in the Tsunami and the tons of fuels, trash and other crap that got souped around in Japan as a result, the old reactor help up respectably, and is a credit to the operators (all of whom are currently alive an well).

I had a common misconception about radioactivity, I thought something with a long half-life was bad because it was going to be radioactive for a long, long time. That is mostly wrong. What that means is it is going to be hardly radioactive for a long time, elements that are short lived are VERY radioactive, but disappear very fast. I don't want to mire you in most of the gritty details, but the fission products reactors produce don't last very long, most only hours, a fewer some decades, and only a few longer than that. Stuff that has billion year a billion year half life...well, you don't really need to worry about it at all, it just isn't that radioactive. Most of the worry is based around "transuranics". That is just fancy speak for "stuff heavier than uranium". This is the stuff like Plutonium and Curium ect. The great thing about modern, Gen4 reactors is they don't really make those things...the thorium reactor I like starts with thorium, which is a long, long way from making anything heavier than uranium (less than 1% theoretically possible). So micrograms per year...not really that much to worry about (there is also no way to really get that to go into the environment because we don't use pressure vessels, but I will leave that to Kirk to explain).

I don't want to make it sounds like there isn't any risk or anything, but the risks have been way overplayed by political interests and not technical ones. For instance, many of the exclusions zones for FD were way overblown, they were no more radioactive than my home in the mountains ...but that isn't want you heard in the news.

But I think I will leave it like that. Nuclear has a bunch of mystic joojoo around it. Don't take my work for it, please, give "bill gates nuclear" a google, or other "gen4 reactor" stuff a chance before you completely write off nuclear as a green option for the future. I personally think it will have a big role to play if we want to stem off CO2 production AND bring more people into a western quality of life. Thanks again for the back and forth.

Attention Meatbags! We Have a Critical Diamond! (Happy Talk Post)

Epic Win Pencil Sharpener - Sharpens Like a Boss!

A Glimpse of Eternity HD

shinyblurry says...

If we're using terms like "tangible evidence", then I assume we're talking in scientific terms. If we're talking scientifically, then you need phenomena, a theory to explain them, and ways of testing that theory. "I would say..." isn't a scientific statement. What qualifies as "tangible evidence" has to be easily understood and agreed upon by everyone. If people don't agree that something is evidence of something, then it's meaningless. Like, if I suggest that graphite pencils are electric insulators, and you say that's bollocks, we can create an electric curcuit with a light bulb. We both agree that if the light bulb turns on when the electric circuit passes through a graphite pencil, then it's definitely not an insulator, regardless of our initial positions. So if the world at large doesn't agree that NDEs are necessarily evidence of God, then it's a meaningless argument. When you theorize God, it doesn't flow logically that when people are near death that they will necessarily see God. You can look at evidence and say, "This fits in with a theory of God." That's fair, but calling it evidence is not scientific. NDEs also fit with my theory that people seek ultimate authority the the worse and worse their living conditions are. I don't claim that it's evidence that I'm right, just that it supports or "fits" my theory. In other words, it proves nothing at all.

I said NDEs do provide tangible evidence of a spirit, not God. Having a spirit is tangible evidence of God. Not all NDEs provide such evidence, but as I mentioned, some people come back to life with information they shouldn't, or couldn't have.

I confess I didn't watch the whole thing (I guessed where it was going once it trailed away from logical enquiry, and so far I haven't heard any surprises -- if there's anything new and interesting in this particular story, lemme know where and I'll watch).

That's fairly typical, I have to say. I don't know if it an atheist thing, or a generational thing and I am speaking to a lot of young atheists, but very often people will refuse to even look at certain kinds of information and testimony, based on their preconceived notions, and their own self-confidence that they've "predicted" what is coming. This is of course a perfect shield for their own ignorance, the censoring of anything which could possibly change their mind, by discounting it in advance. Many atheists have outright told me that if it's longer than a paragraph or two they won't even read it.

The testimony in this video is unique and very interesting, nothing short of incredible actually, and no you couldn't possibly predict what was going to happen. You didn't even make it to him getting into the ambulance.

About the mother praying at that moment. It's possible that there is some connection between mother and child that hasn't been properly measured, that only occurs when children are under extreme stress, and even then, only in rare cases (most mothers don't report "knowing" their children were suffering or dying when they hear the news later). That doesn't require Yahweh, or even any God. It's just a phenomenon that we don't know about. And again, "We can't explain it," isn't evidence of God any more than fully explaining the phenomenon is proof that God is fake.

God told her to pray at that moment, and Ian heard the words of her prayer. You need to watch the video if we're going to have a meaningful conversation about this.

If you cannot provide a test whose conclusion we both agree on for God's existence, then by scientific definition, you have no theory at all. When I press you, the only test you provide is me givnig myself fully to God, and the proof will be that he will contact me eventually if I do it well enough. There's so many loopholes in that to begin with, that no matter how long I did it without result, you'd be able to say why it didn't work. Also, even if it did have a result, I wouldn't agree that the result is proof of God. My theory is that if someone wants to believe something hard enough, and if they bend their will to believing it, they can come to beleive anything they want. It's widely dismissed as "self-delusion" or "choosing to live in a fantasy world" if you're talking about anything other than religoius faith. Some, including myself, also include religious faith in that category. No matter how real it seems, if you convinced yourself of it, that's a good reason to believe you might be deluded. Bottom line, there's no test that we generally agree on, so there's no theory, just your faith that it's true.

You are still operating under the faulty premise that you could suss God out by pointing an instrument at Him. Does that seem logical to you, that you could test for God? That if you just had the right test, suddenly God will appear and say "I guess you got me." The very notion is absurd, yet here you are demanding empirical proof for Gods existence.

What I told you is that only God can provide you revelation of His existence. He has given you a way to know Him, through His Son Jesus Christ. Yet, you refuse to do the one thing which would yield any results. You could pray this prayer, for instance:

"God, I don't know if you're there or not. If you are there, I want to know you. Please let me know you are real and I will give my life to you. Please come into my life as Lord and Savior."

Could you pray that prayer and mean it? Are you interested in the truth?

I'm not sure why, but to people of faith, there seems to be a fear that everything unexplained, if not explained by their God, is somehow a strike against him. That's not at all how science or logic work. There is no phenomenon that requires God to be responsible for it, except the ones he is specifically described as having done himself in the Bible. There's nothing in the Bible that says people's experiences when suffering extreme mental trauma must be caused by God. If they're explained some other way, your theory of God stands just as strong as before. It's when you go attributing everything that YOU don't understand to God's hand that you get yourself into trouble because when those things are later objectively explained another way then you have to change your story. Better to think critically from the begining, and say with authority what God definitely is and isn't, and what God definitely is and isn't responsible for. Then, if any single one of those things is disproven, then you can simply agree that your description of God is wrong.

Again, I said that NDEs evidence of a spirit and not necessary God.

You missed my comment above about God and patience. You've said elsewhere that God lives outside time, and looks at the history of the universe like a movie that he can browse and interfere in at will. But then you also say that he has "patience" which can "wear out". "Patience", by definition, means being forced to wait, and "wearing out" means eroding in time, both of which require living in time. These two ideas of God both living outside of time and having patience which wears out, if words have meaning, are incompatible. They cannot both be true. If you continue to hold to both of those claims about your God, then that's proof that he doesn't exist as you describe him

That isn't how I described it. That was your interpretation of my comment, that God peruses the Universe like a movie. God necessarily exists outside of time and space because He created them. Since He is eternal He is not bound by time. However, that isn't to say that what is happening "now" isn't real. God is the reason we have time, and that things are happening in this moment. The future has not happened yet, there is only now. God operates in this moment, and He isn't limited by time. That is how He can be everywhere at the same time, doing an infinite number of things at the same time. God can also step into time, as His Son did.

>> ^messenger:

messenger (Member Profile)

KnivesOut says...

Very well written, but I'm afraid entirely wasted on your intended audience.
In reply to this comment by messenger:
If we're using terms like "tangible evidence", then I assume we're talking in scientific terms. If we're talking scientifically, then you need phenomena, a theory to explain them, and ways of testing that theory. "I would say..." isn't a scientific statement. What qualifies as "tangible evidence" has to be easily understood and agreed upon by everyone. If people don't agree that something is evidence of something, then it's meaningless. Like, if I suggest that graphite pencils are electric insulators, and you say that's bollocks, we can create an electric curcuit with a light bulb. We both agree that if the light bulb turns on when the electric circuit passes through a graphite pencil, then it's definitely not an insulator, regardless of our initial positions. So if the world at large doesn't agree that NDEs are necessarily evidence of God, then it's a meaningless argument. When you theorize God, it doesn't flow logically that when people are near death that they will necessarily see God. You can look at evidence and say, "This fits in with a theory of God." That's fair, but calling it evidence is not scientific. NDEs also fit with my theory that people seek ultimate authority the the worse and worse their living conditions are. I don't claim that it's evidence that I'm right, just that it supports or "fits" my theory. In other words, it proves nothing at all.

I confess I didn't watch the whole thing (I guessed where it was going once it trailed away from logical enquiry, and so far I haven't heard any surprises -- if there's anything new and interesting in this particular story, lemme know where and I'll watch).

About the mother praying at that moment. It's possible that there is some connection between mother and child that hasn't been properly measured, that only occurs when children are under extreme stress, and even then, only in rare cases (most mothers don't report "knowing" their children were suffering or dying when they hear the news later). That doesn't require Yahweh, or even any God. It's just a phenomenon that we don't know about. And again, "We can't explain it," isn't evidence of God any more than fully explaining the phenomenon is proof that God is fake.

If you cannot provide a test whose conclusion we both agree on for God's existence, then by scientific definition, you have no theory at all. When I press you, the only test you provide is me givnig myself fully to God, and the proof will be that he will contact me eventually if I do it well enough. There's so many loopholes in that to begin with, that no matter how long I did it without result, you'd be able to say why it didn't work. Also, even if it did have a result, I wouldn't agree that the result is proof of God. My theory is that if someone wants to believe something hard enough, and if they bend their will to believing it, they can come to beleive anything they want. It's widely dismissed as "self-delusion" or "choosing to live in a fantasy world" if you're talking about anything other than religoius faith. Some, including myself, also include religious faith in that category. No matter how real it seems, if you convinced yourself of it, that's a good reason to believe you might be deluded. Bottom line, there's no test that we generally agree on, so there's no theory, just your faith that it's true.

About the mother again. All of that could have been wishful thinking/guilty conscience. Mothers often feel guilty when horrible things happen to their children, and one way of "making up for it" in their own minds (or socially) is to tell themselves (or others) that they were suffering too at the same time, and even at a distance were praying for God to intercede.

So I can't explain what happened, but I can provide two decent theories that don't require God.

I'm not sure why, but to people of faith, there seems to be a fear that everything unexplained, if not explained by their God, is somehow a strike against him. That's not at all how science or logic work. There is no phenomenon that requires God to be responsible for it, except the ones he is specifically described as having done himself in the Bible. There's nothing in the Bible that says people's experiences when suffering extreme mental trauma must be caused by God. If they're explained some other way, your theory of God stands just as strong as before. It's when you go attributing everything that YOU don't understand to God's hand that you get yourself into trouble because when those things are later objectively explained another way then you have to change your story. Better to think critically from the begining, and say with authority what God definitely is and isn't, and what God definitely is and isn't responsible for. Then, if any single one of those things is disproven, then you can simply agree that your description of God is wrong.

You missed my comment above about God and patience. You've said elsewhere that God lives outside time, and looks at the history of the universe like a movie that he can browse and interfere in at will. But then you also say that he has "patience" which can "wear out". "Patience", by definition, means being forced to wait, and "wearing out" means eroding in time, both of which requrie living in time. These two ideas of God both living outside of time and having patience which wears out, if words have meaning, are incompatible. They cannot both be true. If you continue to hold to both of those claims about your God, then that's proof that he doesn't exist as you describe him.

A Glimpse of Eternity HD

messenger says...

If we're using terms like "tangible evidence", then I assume we're talking in scientific terms. If we're talking scientifically, then you need phenomena, a theory to explain them, and ways of testing that theory. "I would say..." isn't a scientific statement. What qualifies as "tangible evidence" has to be easily understood and agreed upon by everyone. If people don't agree that something is evidence of something, then it's meaningless. Like, if I suggest that graphite pencils are electric insulators, and you say that's bollocks, we can create an electric curcuit with a light bulb. We both agree that if the light bulb turns on when the electric circuit passes through a graphite pencil, then it's definitely not an insulator, regardless of our initial positions. So if the world at large doesn't agree that NDEs are necessarily evidence of God, then it's a meaningless argument. When you theorize God, it doesn't flow logically that when people are near death that they will necessarily see God. You can look at evidence and say, "This fits in with a theory of God." That's fair, but calling it evidence is not scientific. NDEs also fit with my theory that people seek ultimate authority the the worse and worse their living conditions are. I don't claim that it's evidence that I'm right, just that it supports or "fits" my theory. In other words, it proves nothing at all.

I confess I didn't watch the whole thing (I guessed where it was going once it trailed away from logical enquiry, and so far I haven't heard any surprises -- if there's anything new and interesting in this particular story, lemme know where and I'll watch).

About the mother praying at that moment. It's possible that there is some connection between mother and child that hasn't been properly measured, that only occurs when children are under extreme stress, and even then, only in rare cases (most mothers don't report "knowing" their children were suffering or dying when they hear the news later). That doesn't require Yahweh, or even any God. It's just a phenomenon that we don't know about. And again, "We can't explain it," isn't evidence of God any more than fully explaining the phenomenon is proof that God is fake.

If you cannot provide a test whose conclusion we both agree on for God's existence, then by scientific definition, you have no theory at all. When I press you, the only test you provide is me givnig myself fully to God, and the proof will be that he will contact me eventually if I do it well enough. There's so many loopholes in that to begin with, that no matter how long I did it without result, you'd be able to say why it didn't work. Also, even if it did have a result, I wouldn't agree that the result is proof of God. My theory is that if someone wants to believe something hard enough, and if they bend their will to believing it, they can come to beleive anything they want. It's widely dismissed as "self-delusion" or "choosing to live in a fantasy world" if you're talking about anything other than religoius faith. Some, including myself, also include religious faith in that category. No matter how real it seems, if you convinced yourself of it, that's a good reason to believe you might be deluded. Bottom line, there's no test that we generally agree on, so there's no theory, just your faith that it's true.

About the mother again. All of that could have been wishful thinking/guilty conscience. Mothers often feel guilty when horrible things happen to their children, and one way of "making up for it" in their own minds (or socially) is to tell themselves (or others) that they were suffering too at the same time, and even at a distance were praying for God to intercede.

So I can't explain what happened, but I can provide two decent theories that don't require God.

I'm not sure why, but to people of faith, there seems to be a fear that everything unexplained, if not explained by their God, is somehow a strike against him. That's not at all how science or logic work. There is no phenomenon that requires God to be responsible for it, except the ones he is specifically described as having done himself in the Bible. There's nothing in the Bible that says people's experiences when suffering extreme mental trauma must be caused by God. If they're explained some other way, your theory of God stands just as strong as before. It's when you go attributing everything that YOU don't understand to God's hand that you get yourself into trouble because when those things are later objectively explained another way then you have to change your story. Better to think critically from the begining, and say with authority what God definitely is and isn't, and what God definitely is and isn't responsible for. Then, if any single one of those things is disproven, then you can simply agree that your description of God is wrong.

You missed my comment above about God and patience. You've said elsewhere that God lives outside time, and looks at the history of the universe like a movie that he can browse and interfere in at will. But then you also say that he has "patience" which can "wear out". "Patience", by definition, means being forced to wait, and "wearing out" means eroding in time, both of which requrie living in time. These two ideas of God both living outside of time and having patience which wears out, if words have meaning, are incompatible. They cannot both be true. If you continue to hold to both of those claims about your God, then that's proof that he doesn't exist as you describe him.>> ^shinyblurry:

>> ^messenger:
Yet another example of a numinous experience caused by severe mental trauma. This is exactly what I theorise happened to you, as I mentioned in one of our previous conversations. This lends some support to it. We are genetically predisposed to seek guidance from authority figures, and the worse our condition, the more we seek it out. Being at death's door is the weakest condition possible, and add to that mental trauma, and the brain makes up whatever idea it needs to survive at that moment, and it seems real.
Also, if God wants us to know him so bad, why does he have to attack us with jellyfish first? He can either let us know outright he's there, or leave us a few clues and hope we put the pieces together ourselves. There's no need for torture.

If it's a numinous experience, how do you explain his mother interceding for him in prayer at the exact moment all of this is taking place?
God doesn't have to attack you with jellyfish, but he will use some means like that to get your attention if you continue to fail to respond to the 100 other ways He tried to reach you. Most often, men are so prideful and stubborn that it takes a full realization of their mortality, or a hitting of rock bottom, for them to realize how much they need God. When you're young and healthy, you feel so strong and self-assured, but it's an illusion..you are at the mercy of forces you don't understand each and every moment of each and every day. Life is fragile, but arrogance lends a false sense of security. They think they don't need Him, that they're getting along just fine on their own. It's only because they don't realize they are a heartbeat away from deaths door, and its only His mercy that keeps them there.

Casting a Hexagonal Pewter Stool at the Beach

Casting a Hexagonal Pewter Stool at the Beach

jmd says...

>> ^Sagemind:

Psst.., That's called graphite, not lead (in pencils)


hah, you know your right. infact our pencils never used lead.. it was implied in TV shows and movies at the time for comedic value but yea, its always been graphite huh. Where was the history channel when I was 10.



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