Most of the electricity we produce is used to produce heat or cold; central heating or air conditioning.
These things produce 25kW of electricity but as good as the Stirling engines they are using are, they're only about 30% efficient. The rest of the heat is "waste".
Well at 30% efficiency, that's 50kW of heat being "wasted". They could increase the efficiency to around 85%, 90% by storing the "waste" heat and using it to power absorber chillers, central heating and hot water tanks.
Look up "District Heating" and "District Cooling" on Google. Both have been in use for decades in Denmark, Finland and other European countries.
Indeed. They should have sponsored him... They should have made a competition out of it. FFS the amount of dirt cheap publicity they'd have got would be worth the boxes.
All fine if you're only planning to make half a dozen very expensive rockets. To make spaceflight cheap you have to be planning to make a thousand or ten thousand vehicles. Then the materials or fuel are not the expensive step, the manufacture is.
I have absolutely no idea whether this thing'll work at all but I do know that the cost structure is completely different for low volume vs high volume items and it's high volume low cost space flight that is being aimed at.
It's a way of storing energy. You have to produce the hydrogen somehow and you need another form of energy to do it.
This fire is a joke.
Power stations are inefficient. Most of them are around 40%, there are a few types like combined cycle gas turbines that make it up to around 60% efficient. That means electric heating is no more than 60% efficient. That sounds OK till you realise that the power station is throwing away gigawatts of "waste" heat.
If this "waste" heat was pumped round houses, buildings and used to heat them instead of the electricity then the electricity could be used for something else instead. Closer to 90% efficiency rather than 40% or 60%. It's called District Heating and has been round for decades.
They have fewer admin people fewer accountants, fewer IT people. They benefit from economies of scale and have lower overall overhead. Lots of small companies means higher employment rather than lower.
"We never get tired of blowing stuff up"
on
19 million Amps
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· Score: 1
"A lot of your martial arts is spent clearing your mind so you can think effectively in spite of the situation. Thinking is actually pretty important."
No, it's more than that, it's fatal. You clear your mind to get it out of the way. It also helps sweep the emotion aside. Thinking causes you to hesitate and to freeze. If you're thinking you are not responding.
"The problem stems from having too many tools in the weapons arsenal, and not being sure which one to use."
Actually the problem stems from having to choose the tool in the first place. Thought gets in the way. It has to be reflex, which is why the occasional self defense lesson is useless. To train for self defense you have to make it part of your life which is why karate, jujitsu, aikido etc are considered ways or paths. The masters of these martial arts don't give a fraction of a second's thought on how they are going to respond, they just do it.
"The untrained run away, and the trained stay when they should have run away."
Not if they've been trained by someone who knows what they're talking about they don't. Unfortunately there are a lot of people out there who train for sport and are completely unequipped to defend themselves no matter how long they've been at it.
" Yeah, because in practice you are always about to be killed or raped."
Yes. That's exactly how you should practice. Practice as if you're about to be killed. If you don't, what you're doing is sport, for entertainment, not self defense. When you practice a punch, do it hard and strong to crush your opponent's ribs and damage his internal organs, when you practice a kick you're trying to destroy his ankle, knee or kick his balls out of the top of his head, when you practice an arm lock you're trying to destroy that arm or shoulder.
Of course we can't go maiming our training partners so these have to be practiced in controlled situations, which yes can make realism a problem.
"You should just automatically punch somebody in the face when your body thinks its under attack"
There are several stages to self defense situation, you should find out what they are and train for them as well, the emotional effect of being attacked is as debilitating as actually being hit. I recommend Geoff Thompson's books.
"Thinking never takes to long. Your muscles do not think, and cannot react to a complex situation such as HARMING SOMEBODY."
You're absolutely wrong. During training it's your subconscious which is being trained, when a punch comes in it takes a fraction of a second, there is abolutely no time to think. Your reflexes can have your body moving out of the way and a hand or forearm in the way, deflecting it within that time if it is trained, your conscious mind cannot.
The retaliation has to be immediate and just as reflexive with no thought involved. Harming somebody is what you have to do to defend your life, you have to be able to tear joints, break bones, gouge eyes.
This often takes years of the right type of training BTW. If you go to a self defence class or martial arts class for a few lessons, or even a few months and then stop, you've wasted your time and money. If you go to a martial arts class which don't train realistic situations regularly or apply the techniques realistically, you're wasting your time and money.
"Of course, you do know that running away is the number one form of "self defense."
Yes, I absolutely do and it's what i'd do given the slightest opportunity. It's what all of the martial arts and self defence experts recommend. Karate, Kung Fu, Tai Chi, Ju Jitsu, Aikido, System A. Anyone who doesn't flee at the first opportunity is asking to be killed.
If you have to consciously think then you lose. Thinking takes too long. It has to be reflex/muscle memory/autopilot or whatever you want to call it.
Which is why all the repetitive training, the high pressure fighting during practice. And it's also why books and videos though good for imparting information can never help when the real thing happens.
And the reason science answers how rather than why is that why, requires intent. Intent requires god.
If you are asking Why do we exist or why does this happen, you are already assuming that god, or some omniscient, omnipotent creator exists and asking what their intent was.
That is not the reason people switch to FireFox. Yes, it's nice when they get there, but the reason people are switching is because they are easy meat when using IE.
I haven't heard about any security enhancements to IE 7 but if we can assume any that have been added are on the same level of ability as "Genuine Advantage" then the Firefox developers have absolutely nothing to worry about.
Just Friday, China floated the Yuan on the currency markets. It's no longer pegged to the dollar, most of those in the know claim it's about 40% undervalued at the moment, so it's almost certainly going to increase in value over the next year or so, even though they still have constraints on the rate it changes.
Chinese people and products are going to get more expensive. Chinese people are going to become more wealthy with the appreciation of the yuan and will want all the stuff we have...
At which point World War III will break out over global resources, so maybe all is lost really.
On Friday, the Chinese government scrapped the link between the US dollar and the Yuan. The link is the reason Chinese people and products have been so cheap for the last decade or so.
With the link scrapped, the Yuan is going to increase in value, making Chinese people and Chinese products more expensive.
This is going to mean less, not more offshoring to China in the future. Other AsiaPac countries co-ordinated similar moves at the same time.
I agree. It has to be around 30 years now since this sort of thing started happening. Since email and mailing lists have existed.
Maybe it's news about how dumb journalists are, but if you go into any newsagents and have a look at what they're writing you can see that for yourself anyway. For gods sake don't buy anything, it only encourages them.
Remember, you only have to get a touch over half the population to vote for you (Only a third in the UK). With half the population having an IQ of less than 100 you don't need to promise all that much to get their vote.
Stating the obvious and then grossly oversimplifying the action to take is a pretty good way to get elected.
Slashdot Mirror
Most of the electricity we produce is used to produce heat or cold; central heating or air conditioning.
These things produce 25kW of electricity but as good as the Stirling engines they are using are, they're only about 30% efficient. The rest of the heat is "waste".
Well at 30% efficiency, that's 50kW of heat being "wasted". They could increase the efficiency to around 85%, 90% by storing the "waste" heat and using it to power absorber chillers, central heating and hot water tanks.
Look up "District Heating" and "District Cooling" on Google. Both have been in use for decades in Denmark, Finland and other European countries.
Solar I and Solar II were engineering prototypes. Y'know to see if it'd work and how well. They weren't production power plants.
Indeed. They should have sponsored him... They should have made a competition out of it.
FFS the amount of dirt cheap publicity they'd have got would be worth the boxes.
"So space flight is all about weight reduction."
All fine if you're only planning to make half a dozen very expensive rockets. To make spaceflight cheap you have to be planning to make a thousand or ten thousand vehicles. Then the materials or fuel are not the expensive step, the manufacture is.
I have absolutely no idea whether this thing'll work at all but I do know that the cost structure is completely different for low volume vs high volume items and it's high volume low cost space flight that is being aimed at.
It's a way of storing energy. You have to produce the hydrogen somehow and you need another form of energy to do it.
This fire is a joke.
Power stations are inefficient. Most of them are around 40%, there are a few types like combined cycle gas turbines that make it up to around 60% efficient. That means electric heating is no more than 60% efficient. That sounds OK till you realise that the power station is throwing away gigawatts of "waste" heat.
If this "waste" heat was pumped round houses, buildings and used to heat them instead of the electricity then the electricity could be used for something else instead. Closer to 90% efficiency rather than 40% or 60%. It's called District Heating and has been round for decades.
They have fewer admin people fewer accountants, fewer IT people. They benefit from economies of scale and have lower overall overhead. Lots of small companies means higher employment rather than lower.
One of the researchers was quoted as saying.
And the second and a half between "Got the time mate?" and the knife appearing below your nose?
"A lot of your martial arts is spent clearing your mind so you can think effectively in spite of the situation. Thinking is actually pretty important."
No, it's more than that, it's fatal. You clear your mind to get it out of the way. It also helps sweep the emotion aside. Thinking causes you to hesitate and to freeze. If you're thinking you are not responding.
"The problem stems from having too many tools in the weapons arsenal, and not being sure which one to use."
Actually the problem stems from having to choose the tool in the first place. Thought gets in the way. It has to be reflex, which is why the occasional self defense lesson is useless. To train for self defense you have to make it part of your life which is why karate, jujitsu, aikido etc are considered ways or paths. The masters of these martial arts don't give a fraction of a second's thought on how they are going to respond, they just do it.
"The untrained run away, and the trained stay when they should have run away."
Not if they've been trained by someone who knows what they're talking about they don't. Unfortunately there are a lot of people out there who train for sport and are completely unequipped to defend themselves no matter how long they've been at it.
" Yeah, because in practice you are always about to be killed or raped."
Yes. That's exactly how you should practice. Practice as if you're about to be killed. If you don't, what you're doing is sport, for entertainment, not self defense. When you practice a punch, do it hard and strong to crush your opponent's ribs and damage his internal organs, when you practice a kick you're trying to destroy his ankle, knee or kick his balls out of the top of his head, when you practice an arm lock you're trying to destroy that arm or shoulder.
Of course we can't go maiming our training partners so these have to be practiced in controlled situations, which yes can make realism a problem.
"You should just automatically punch somebody in the face when your body thinks its under attack"
There are several stages to self defense situation, you should find out what they are and train for them as well, the emotional effect of being attacked is as debilitating as actually being hit. I recommend Geoff Thompson's books.
"Thinking never takes to long. Your muscles do not think, and cannot react to a complex situation such as HARMING SOMEBODY."
You're absolutely wrong. During training it's your subconscious which is being trained, when a punch comes in it takes a fraction of a second, there is abolutely no time to think. Your reflexes can have your body moving out of the way and a hand or forearm in the way, deflecting it within that time if it is trained, your conscious mind cannot.
The retaliation has to be immediate and just as reflexive with no thought involved. Harming somebody is what you have to do to defend your life, you have to be able to tear joints, break bones, gouge eyes.
This often takes years of the right type of training BTW. If you go to a self defence class or martial arts class for a few lessons, or even a few months and then stop, you've wasted your time and money. If you go to a martial arts class which don't train realistic situations regularly or apply the techniques realistically, you're wasting your time and money.
"Of course, you do know that running away is the number one form of "self defense."
Yes, I absolutely do and it's what i'd do given the slightest opportunity. It's what all of the martial arts and self defence experts recommend. Karate, Kung Fu, Tai Chi, Ju Jitsu, Aikido, System A. Anyone who doesn't flee at the first opportunity is asking to be killed.
If you have to consciously think then you lose. Thinking takes too long. It has to be reflex/muscle memory/autopilot or whatever you want to call it.
Which is why all the repetitive training, the high pressure fighting during practice. And it's also why books and videos though good for imparting information can never help when the real thing happens.
Try wikitravel.org instead.
And the reason science answers how rather than why is that why, requires intent. Intent requires god.
If you are asking Why do we exist or why does this happen, you are already assuming that god, or some omniscient, omnipotent creator exists and asking what their intent was.
"Our next responsibility is to try very very hard not to contaminate Mars with Earth-life"
Bollocks it is. Our next responsibility is to sell rights to do whatever you like with the land.
That is not the reason people switch to FireFox. Yes, it's nice when they get there, but the reason people are switching is because they are easy meat when using IE.
I haven't heard about any security enhancements to IE 7 but if we can assume any that have been added are on the same level of ability as "Genuine Advantage" then the Firefox developers have absolutely nothing to worry about.
Just Friday, China floated the Yuan on the currency markets. It's no longer pegged to the dollar, most of those in the know claim it's about 40% undervalued at the moment, so it's almost certainly going to increase in value over the next year or so, even though they still have constraints on the rate it changes.
Chinese people and products are going to get more expensive. Chinese people are going to become more wealthy with the appreciation of the yuan and will want all the stuff we have...
At which point World War III will break out over global resources, so maybe all is lost really.
"Things will get tough for everyone."
There's the understatement of the year. If you look at the socioeconomic reasons for world wars 1 & 2, it's pretty clear that 3 is on it's way.
On Friday, the Chinese government scrapped the link between the US dollar and the Yuan. The link is the reason Chinese people and products have been so cheap for the last decade or so.
With the link scrapped, the Yuan is going to increase in value, making Chinese people and Chinese products more expensive.
This is going to mean less, not more offshoring to China in the future. Other AsiaPac countries co-ordinated similar moves at the same time.
To determine what the viewers like to record, then filter on the programme descriptions to record similar stuff automatically.
Wait! TiVo does something very like that *already*!
Let's not be elegant about this then. Lets use brute force instead.
I agree. It has to be around 30 years now since this sort of thing started happening. Since email and mailing lists have existed.
Maybe it's news about how dumb journalists are, but if you go into any newsagents and have a look at what they're writing you can see that for yourself anyway. For gods sake don't buy anything, it only encourages them.
Put a tax on carbon based fuel sources. Start at 1%. Then increase it by 1% each year.
Not programmes. If you pay for programmes, you get programmes, not results.
Seriously, this is basically how all successful exploration has proceeded in the past.
Remember, you only have to get a touch over half the population to vote for you (Only a third in the UK). With half the population having an IQ of less than 100 you don't need to promise all that much to get their vote.
Stating the obvious and then grossly oversimplifying the action to take is a pretty good way to get elected.
Nothing of course. The Home Secretary is the direct boss of all the police in England and Wales.
Plus it's also illegal to inform anyone that you've even been asked for a key.