The Spanish Grid Drop-out - recently released information.

Do the math.

Sometimes on a commercial flight the pilot will address the passengers and you can hear a distinct 400 Hz background noise.

And big transformers push the saturation limits of the steel, so there will be magnetostriction. You can already hear 60 Hz hum near a big transformer.

Sloman has to deny anything that I say. Beats thinking.

You can't do the math until you have the numbers. Where are yours?

You would have to get the nuclear waste into the oceanic lithosphere - below the oceanic crust - so dropping casks of waste into ocean above the trench wouldn't hack it.

Popular science is entertaining, rather than detailed or comprehensive.

Is there any way of slowing it down?

When it is a problem, the cross-country power lines carry DC rather than AC.

Can't say that I've ever noticed it. Power supply hum getting into audio systems is evidence that somebody hasn't been as careful as they should be with their grounding and shielding, and that does happen from time to time.

I don't feel any compulsion to chip in when you get stuff right. If you thought a bit harder about what you posted, you'd get stuff wrong less often, and see fewer corrections. Non-narcissists see it as an invitation to raise their game, but narcissists imagine that they never get stuff wrong.

Subduction is usually in the cm/year ballpark. The waste will be lying on the seabed for millennia, likely lots of millennia, if it doesn't dissolve before that. Besides, it's a bit gross to pollute an environment we have barely even seen yet.

Oh well, it's not your backyard.

Jeroen Belleman

A well sealed cask of vitrified nuclear waste, roughly a cubic meter, will be insoluble, basically a rock, and will be secure for millenia, as the hotter nucleotides decay. It will probably be sunk deep into muck, under kilometers of water. It won't be back for millions of years.

The earth's oceans are 1.3 billion cubic kilometers, and that water is already mildly radiactive, mostly from potassium. Cosmic rays keep generating radioactive isotopes in sea water. There's enough uranium in sea water that we would extract it if we didn't have cheaper sources.

Math.

Why would it sink deep into rock?

Subduction zones are geologically active and if it ends up on top of a volcanic eruption, it might get buried or dissolved in molten lava

A radioactive lava flow on a new mid-ocean island wouldn't be an attractive feature.

Mathematics is what you use to convert physical models of reality into predictions of how that physical reality will evolve.

Your intellectual model of the subduction process isn't exactly detailed. It's the oceanic lithosphere that gets subducted, not the oceanic crust, and you haven't detailed a mechanism where a sealed cask would get incorporated into the oceanic crust, rather than just sit on its surface.

Wittering on about "math" when you haven't got a clue what you'd apply that "math" to is just advertising yourself as pretentious poseur.

On the contrary, it is a very rational knowledge that prevents it.

A modern large aircraft may have close to a megawatt of generation capacity.

That seems too paltry.

.

Propulsion is 190 Megawatts. In earlier ships, this would be all steam and mechanical.

.

Later ships are increasingly electric, to support modern things like big radars, electromagnetic launch systems, lasers, railguns, and so on.

Joe

I would seem to be possible to sync all sources to a common reference such as GPS time, with the grid operator providing power and phase settings to all sources via network to balance load and sources. Stability analysis of such a network might be a good subject for a PhD thesis. There is work being done on standards for micro-grids where all sources could be inverters, and there has to be some method of synchronizing and load sharing but I haven't heard any details on how.

In the US there has never been a requirement to update legacy installations, not sure about elsewhere.

There is a 35 minute UL advertisement at:

The status of much of the proposed EU harmonized grid standards is "lack of agreement" :-).

Glen

On 5/17/25 10:25 PM, Don Y wrote: <...>

It is not. The US is divided into multiple regions with DC interties.

The physical size of the US is about one cycle of 60Hz at light speed!