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Nuclear looks bad if you restrict it to 1940's technology. Which we have done. We don't allow ourselves to dream any more when it comes to nuclear. We are still
by bcatanzaro 7y ago
Nuclear looks bad if you restrict it to 1940's technology. Which we have done. We don't allow ourselves to dream any more when it comes to nuclear. We are still building the same plants we designed for submarines and bombs, and wondering why they aren't great for power. There are safer, cheaper, lower waste alternatives if we'd allow ourselves to try them (Thorium reactors, for example).
Does wind power really reduce the speed of the earth? I'd assume wind energy comes from the sun heating the atmosphere, so wind power is really just solar power in a different form.
Solar makes me really sad. The amount of land it consumes is staggering. Land that can't be used for other living things. I saw the most beautiful farmland in Italy this month smothered under sterile black waves of solar panels.
- blackbrokkoli 7y agoDevastating! Chernobyl on the other hand is one of the most beautiful tourist locations to this day! Really though, it baffles me how people can bring degrading postcard quality into a discussion with stakes of a few billion human lives with a straight face...
- bcatanzaro 7y agoPeople didn't care about the externalities of burning coal until we had scaled the technology. The externalities of large scale solar PV are not just bad, they're impossible. https://www.ted.com/talks/david_mackay_a_reality_check_on_renewables?language=en https://www.ted.com/talks/david_mackay_a_reality_check_on_re...
- sprash 7y ago> Nuclear looks bad if you restrict it to 1940's technology. The research in nuclear is still been done very actively. My country is putting hundreds of millions per year into nuclear research. But even the new technologies are not competitive. The infrastructure and maintenance required for nuclear technologies is vastly more expensive than solar. The thorium hype is moot because nobody ever demonstrated a working molten salt reactor. And even if it works it is still very expensive, suffers from corrosion and produces radioactive waste that is expensive to dispose of. Nuclear technology is old. All the physics behind it is more or less known for 60 years. Very smart people had a lot of money available to come up with something during that whole time. I don't expect any ground braking innovation in that field any more. > Does wind power really reduce the speed of the earth? You can measure that by yourself. In my location the if you average over all wind directions during a year you clearly get very west wind bias. That is the amount of Energy you take from earths rotation. > I saw the most beautiful farmland in Italy this month smothered under sterile black waves of solar panels. Of course it is stupid to put solar panels on farmland. But there are so many desserts in America that America alone could power three globes only with solar power. Only half of the roof of my house is covered with solar panels and I would easily get through the summer. If I populate the rest of the roof I would get through the winter if there was a possibility for cheap storage that lasts half a year. Also I find wind farms in nature equally disturbing.
- bcatanzaro 7y agoRegarding the earth's rotation, this webpage disagrees: https://climate.ncsu.edu/edu/Drivers https://climate.ncsu.edu/edu/Drivers "The rotation of the earth does have an effect on the direction of the wind, but it does not create it. Wind is primarily driven by differences in air pressure. These variations in air pressure are due to temperature differences caused by variations in solar energy received at the surface of the earth."
- sprash 7y agoConservation of angular momentum doesn't care about the origin of those winds. If you harvesting net average west wind you are slowing down earths rotation.
- pfdietz 7y agoI think you need to retake that physics course where you learned about conservation of angular momentum. Use of wind energy has zero effect on the total angular momentum of the Earth + atmosphere. It might cause a glitch as it ramps up and reduces average wind speed, but after that conservation of angular momentum ensures it cannot cause any further change.