Hacker News with Generative AI: Electricity

Electric power generation from Earth's rotation through its own magnetic field (arxiv.org)
Earth rotates through the axisymmetric part of its own magnetic field, but a simple proof shows that it is impossible to use this to generate electricity in a conductor rotating with this http URL, we previously identified implicit assumptions underlying this proof and showed theoretically that these could be violated and the proof circumvented.

Physics, Electricity, Magnetism, Earth Science

42 points by PaulHoule 4 days ago | 7 comments

Guiding Electricity with Sound (phys.org)
A recent study published in Science Advances uncovers a way of transporting electricity through air by ultrasonic waves.

Physics, Science, Acoustics, Electricity

18 points by gummy23 55 days ago | 3 comments

What's the Deal with Magnetic Fields? (lcamtuf.substack.com)
In a recent article, I brought up an important gotcha about electricity:

Physics, Magnetism, Electricity

30 points by zdw 58 days ago | 24 comments

Power Demand at Data Centers Is Disrupting Harmonics in Nearby Electrical Grids (cleantechnica.com)
According to Bloomberg, the enormous demand for electricity by data centers is leading to a phenomenon known as bad harmonics.

Data Centers, Electricity, Grids, Energy

4 points by ryan_j_naughton 93 days ago | 0 comments

An epitome of electricity and galvanism (1809) (gutenberg.org)
In examining the progress of almost any branch of human knowledge, curiosity must meet with many repulses.

History, Science, Electricity

8 points by petethomas 104 days ago | 2 comments

Which power plant does my electricity come from? (practical.engineering)
In June of 2000, the power shut off across much of the San Francisco Bay area. There simply wasn’t enough electricity to meet demands, so more than a million customers were disconnected in California's largest load shed event since World War II.

Electricity, Power Grid, Engineering, California

201 points by impish9208 134 days ago | 115 comments

'A bullet train for power': China's ultra-high-voltage electricity grid (bbc.com)
China produces more clean energy than any other country. Now it's rolling out an ultra-high-voltage grid to match – will its strategy of going big pay off?

China, Energy, Electricity, Infrastructure, Clean Energy

9 points by pseudolus 137 days ago | 0 comments

Egypt, Saudi Arabia push ahead with $1.8B electricity interconnector project (zawya.com)
Egypt’s Minister of Electricity and Renewable Energy Mahmoud Essmat has reiterated his commitment to completing the Saudi-Egypt electricity interconnector project by early summer 2024, emphasising the importance of close collaboration and coordination between all involved parties.

Egypt, Saudi Arabia, Electricity, Infrastructure, International Cooperation

8 points by eatonphil 173 days ago | 0 comments

Experiments with Alternate Currents of High Potential and High Frequency (1892) (pbs.org)
I cannot find words to express how deeply I feel the honor of addressing some of the foremost thinkers of the present time, and so many able scientific men, engineers and electricians, of the country greatest in scientific achievements.

Electricity, Science, History, Experiments

7 points by joebig 191 days ago | 1 comments

Austraila's Controlled Loads Are in Hot Water (hackaday.com)

Australia, Energy, Technology, Electricity

14 points by jnord 230 days ago | 2 comments

Portugal over 90% renewable electricity in May and June (twitter.com)

Portugal, Renewable Energy, Electricity, Climate Change, Sustainability

24 points by locallost 269 days ago | 7 comments

Why does current flow the opposite way from the electrons? (mathstodon.xyz)

Physics, Electricity, Electronics

245 points by johncarlosbaez 285 days ago | 242 comments

Electricity prices in France turn negative as renewable energy floods the grid (fortune.com)

Renewable Energy, France, Electricity, Energy Prices

11 points by thelastgallon 290 days ago | 0 comments

History of the Italian electrical system (samuele963.github.io)

History, Italy, Electricity, Engineering

135 points by wannacboatmovie 321 days ago | 82 comments

California's electricity rates will shift to a fixed fee based on income (calmatters.org)