CFLs are also sensitive to the number of times they are turned on/off. And both LED/CFLs are sensitive to operating temperature due to (often) cheap electrolytic capacitors that dry out quicker at high temperatures. So, the total number of hours depend on a lot of usage.
Your retina doesn't use most of the color spectrum anyway. Basically, as long as you stimulate the 3 different cones at the appropriate level, you will see white light.
Since we have no way to actually take a sample of the water on Ganymede, it's all just speculation anyway. And if we're just speculating, there's no point in restricting ourselves to Earth-like circumstances.
Bitcoin still has a middleman. Somebody has to put the transaction in a block and find a good hash for it. That takes energy, and they would like to be paid for it.
In fact, for small transactions (less than $1) bitcoin is rather expensive.
You are correct that overpopulation used to be a problem, but the developed world has basically solved that issue. See Japan, where the population growth is basically negative.
How's that working in a place like Saudi Arabia? Since the oil money started to come in, population has grown from 4 million in 1960 to almost 30 million now.
The mere fact that we have the technical ability does not mean the system is adequate to the needs of those who are hungry.
That's not a fault of the distribution. It just means that the people who have the food aren't willing to give it away, and have it transported on their dime. And why should they ? It's not the fault of the food producers or food distributors that somebody decides to have children in an area that doesn't support sufficient means to feed them.
I doubt there is a gene for family size..(*facepalm*)
You've never heard of people wanting to have children for no rational reason ? You never wonder why people are so interested in having sex ? You are sure those urges have nothing to do with our genes ?
Nope. It goes somewhere but there are use cases where it's put into the ocean
Yes, there are some cases where it goes into the ocean, but that's a tiny percentage of our overall waste heat. Most of it goes back to the atmosphere.
But recently we have come up with far better solutions involving birth control.
Voluntary birth control is only a temporary fix. I still see plenty of big families. The genes that promote these bigger families will keep spreading faster than the genes that promote small families.
we're managing to support seven billion-plus with fewer people starving than was common when I was growing up half a century ago. And higher standards of living.
But you can't say we're sustaining that while we use up fossil fuels faster than they are being produced.
They can vary by a whole fuckload more than a few measly thousand light years.
Stars that are part of a constellation are generally visible with the naked eye, which means that they are typically less than 1000 light years away. The furthest star that's visible with the naked eye (with good eyesight/conditions) is V762 Cas in the constellation of Cassiopeia at 16000 light years.
I definitely would want to have to wait until year 18 for them to "cost less" due to their amortized costs
For a 40W incandescent vs a 5W LED, and average 2 hr/day use, that's a savings of 25kWh/year. With my local electricity rate, that's about $6/year savings. I just paid $3.50 for that LED lamp.
So, we're not talking about 18 years, but 6 months.
Now add in the much higher energy cost of manufacture of either a CF or LED bulb and the picture gets even more complicated.
Who says the energy cost is much higher ? They sell LED bulbs for a few dollars now, so maybe $1 in energy cost. That's trivial compared to the electricity consumed by an incandescent bulb.
The basics are that in northern latitudes with long cold nights in winter and centrally heated houses with thermostatic control whether energy efficient bulbs actually save energy
Most lamps are not mounted in places where heat is required. A lot of it goes into the ceiling. So, at best you can get partial use of the waste heat in very specific conditions: electric heating, long dark winter nights, low mounted lamps. People with natural gas heating don't benefit, and during the summer with the A/C running, the waste heat from the lights is not just wasted, but the A/C has to run harder to get rid of it.
Slashdot Mirror
Hither and yon from there is nothing but a cold hard vacuum, as far as the eye cannot see. Whatever your plans are, it's not worth it.
Would it help if you mounted the lasers on sharks ?
CFLs are also sensitive to the number of times they are turned on/off. And both LED/CFLs are sensitive to operating temperature due to (often) cheap electrolytic capacitors that dry out quicker at high temperatures. So, the total number of hours depend on a lot of usage.
Your retina doesn't use most of the color spectrum anyway. Basically, as long as you stimulate the 3 different cones at the appropriate level, you will see white light.
Paypal is rather expensive. But I can do bank transfers for free. And banks are now starting with contactless NFC payments, also free.
Since we have no way to actually take a sample of the water on Ganymede, it's all just speculation anyway. And if we're just speculating, there's no point in restricting ourselves to Earth-like circumstances.
As soon as you get rid of one warlord, another one will take his place. It's not a problem you can fix.
Bitcoin still has a middleman. Somebody has to put the transaction in a block and find a good hash for it. That takes energy, and they would like to be paid for it.
In fact, for small transactions (less than $1) bitcoin is rather expensive.
Natural gas from fracking won't last long. It would be nice to start working on alternatives before that.
You are correct that overpopulation used to be a problem, but the developed world has basically solved that issue. See Japan, where the population growth is basically negative.
How's that working in a place like Saudi Arabia? Since the oil money started to come in, population has grown from 4 million in 1960 to almost 30 million now.
How exactly is that solved ?
The mere fact that we have the technical ability does not mean the system is adequate to the needs of those who are hungry.
That's not a fault of the distribution. It just means that the people who have the food aren't willing to give it away, and have it transported on their dime. And why should they ? It's not the fault of the food producers or food distributors that somebody decides to have children in an area that doesn't support sufficient means to feed them.
I doubt there is a gene for family size. .(*facepalm*)
You've never heard of people wanting to have children for no rational reason ? You never wonder why people are so interested in having sex ? You are sure those urges have nothing to do with our genes ?
Blockchain sounds sexier.
I personally think that vertical wind turbines (that look like an egg beater sticking up, rather than a large propeller ) are the way to go.
People who design wind turbines disagree with you. Now what ?
Nope. It goes somewhere but there are use cases where it's put into the ocean
Yes, there are some cases where it goes into the ocean, but that's a tiny percentage of our overall waste heat. Most of it goes back to the atmosphere.
Starvation and hunger are distribution problems, not production problems
We have excellent distribution systems, so that's not a problem. The real problem is that many people can't afford it.
Overall you're pulling heat out of the atmosphere; so, not a bad thing.
No, because that energy is put back in the atmosphere somewhere else.
But recently we have come up with far better solutions involving birth control.
Voluntary birth control is only a temporary fix. I still see plenty of big families. The genes that promote these bigger families will keep spreading faster than the genes that promote small families.
we're managing to support seven billion-plus with fewer people starving than was common when I was growing up half a century ago. And higher standards of living.
But you can't say we're sustaining that while we use up fossil fuels faster than they are being produced.
I volunteer as a tribute!
They can vary by a whole fuckload more than a few measly thousand light years.
Stars that are part of a constellation are generally visible with the naked eye, which means that they are typically less than 1000 light years away. The furthest star that's visible with the naked eye (with good eyesight/conditions) is V762 Cas in the constellation of Cassiopeia at 16000 light years.
Where are you planning to jump, if a Jupiter moon is a good "jumping off place" ?
I definitely would want to have to wait until year 18 for them to "cost less" due to their amortized costs
For a 40W incandescent vs a 5W LED, and average 2 hr/day use, that's a savings of 25kWh/year. With my local electricity rate, that's about $6/year savings. I just paid $3.50 for that LED lamp.
So, we're not talking about 18 years, but 6 months.
Now add in the much higher energy cost of manufacture of either a CF or LED bulb and the picture gets even more complicated.
Who says the energy cost is much higher ? They sell LED bulbs for a few dollars now, so maybe $1 in energy cost. That's trivial compared to the electricity consumed by an incandescent bulb.
The basics are that in northern latitudes with long cold nights in winter and centrally heated houses with thermostatic control whether energy efficient bulbs actually save energy
Most lamps are not mounted in places where heat is required. A lot of it goes into the ceiling. So, at best you can get partial use of the waste heat in very specific conditions: electric heating, long dark winter nights, low mounted lamps. People with natural gas heating don't benefit, and during the summer with the A/C running, the waste heat from the lights is not just wasted, but the A/C has to run harder to get rid of it.
And all we need to do to take a sample is a launch a probe with a 300 km long drill bit. Easy peasy.