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Comment Re:that is a lot of land if my calcs are correct (Score 1) 97

The materials mentioned here are mostly all reflecting: https://www.science.org/conten...

I have no link at hand that gives an example for materials that shift the frequency of photons, but is not difficult to find.

Point is: such materials easily shift the ambient temperature around the area where they are used by 5C or more. As they are usually "white" they also increase yield of solar panels near by.

Comment Re:Mosquitos as "animals" (Score 1) 100

Yes, it is regional.

As I never lived in a country that has Gizzlies, or Crocodiles. Well, in Thailand we have water monitors (harmless) and something that resembles a Kaiman, but is called different.

The Tigers prefer to live in the forest. Nearly all are GPS tagged and it is unlikely that one ever comes into my room. Germany has no Tigers or Crocodiles, and brown bears only very recently.

So, cockroaches, spiders, mosquitos would actually be on the top of my list: both in Germany (or Europe) and Thailand.

Obviously an animal is an animal, so no idea about that part of your question.

Comment Re:FTFY Re: Unpredictable Side Effects (Score 1) 100

That is actually under debate.

Both the time and how they went there.

As that land bridge: actually did not exist at that time.

It was a gigantic pillar of ice.

Does not mean it was impossible to pass ... but to get there: you already have to pass thousands of miles of icy land, where nothing lived at all.

So: it might have sounded plausible when the books saying this were written, it is absolutely not plausible from a practical point of view.

Knowing that the oldest artefacts from "early settlers" are over 40k years old, we have proof the time frame is wrong.

How did the people got there? Most likely by boat. How else? While the idea that some people walked from Africa to China, to Siberia, crossed a land bridge to Alaska, walked down north America, to finally reach South America is not absurdly wrong, but it is far less plausible than boats from China to West Coast America.

Why do I write this "nonsense"? Well a few month ago I read an article who they think Japan was settle, roughly 20k years ago. They tried to row there from Taiwan, I believe. In sea worthy rowing boats. They managed the trip in 30 days, an concluded: it was possible for early settlers to travel by boat to Japan, roughly 20k or 30k years ago.

That is the biggest nonsense ever: because of the ice mountains over the land bridge connecting north America with Siberia: Japan was connected by land to China. You just walk there. Or tame some Mammoths and ride on them ... there was perhaps a large lake between China and Japan, but the land masses were connects.

Except for a small gab, which you probably could look over to the other side: everything from China down to Australia was connected, because the sea level was close to 200m lower than right now (yes, it is not 200 ... but close enough for a rough number)

Same stupidity about "how was Australia settled". What we call Aboriginals settled there roughly 40k years ago. And the mystery always was sold as: how did they get there? No one knows!! Yeah, dear IQ monsters: it was in the middle of an "ice age". Actually at the peak of the last ice age. Except for the last 30km ... they walked there. So much to "land bridge".

Comment Re:that is a lot of land if my calcs are correct (Score 1) 97

Absolutely nothing bad about hectars, as hect means 100 and hence an hectar are 100 Ar, oops. And for your interest one Ar is 100square meters - aka 10m x 10m. So no idea what your point is.

So 100 Ar - 1 hectar, are 10Ar versus 10Ar, which is 100m versus 100m ...

And: all that is not binary logic, with 1 and 0 ... it is standard decimal. You are using the decimal number system, right? Why do you insist that your measurements are in odd bases, but translate them to decimal to express them?

1000000
^

insert a coma at the correct place(s), if you need to shift scales. Simple. I use them to get visual clues ...

What is next? You do not know what a hecto liter is? Well, it is 100 - in greek "hecto" - liters. Until 40 or 50 years ago, hecto liter was the unit to pay water bills or sewage bills. Then it got changed to cubic meters. Which is a meter versus a meter versus a meter ... obviously. Up to you to figure how many hectoliter fit into one cubic meter.

Hint: the number will start with a 1 ... and have a series of 0 behind it. Instead of being some odd multiply like 3, or 12 or 16 ...

Comment Re:Reads like the beginning of a Tom Clancy novel. (Score 1) 130

Those stories/researches must be hundreds of years old.

There are plenty of solar power plants that use molten salt as heat storage.

The problems with fission reactors using molten salt: is keeping the stuff in a fissionable state, removing fission products and inserting fresh fuel.

Has absolutely nothing to do with corrosion resistant alloys, this is really solved since long long ago: before I was born.

So, if you want to nitpick, at some point you have to accumulate waste, and get it out, and the "vent" to get it out is complex, yes, you are right. We have problems with expansion caused by heat, and keep everything tight, we have problems with welding ... and so on.

Bu the materials, we have since the 1950s.

Most things about molten salt fission reactors, people claim, is just nonsense. Like "burning the waste". The waste does not "burn", it decays and produces extra heat. Depending on what it is, it is harmful for the real fission processes. Keeping/controlling the salt mixture to have it in constant controlled chain reaction: that is a problem.

And then: you fill the damn thing, with SOLID salt. How do you start it?
And then: it shuts down for some reason, and as physics tell us, the heavy stuff will go to the bottom, the light stuff to the top, how do you make sure you can restart it, or do not get "critical" masses on the bottom.

Well, with Thorium and the breeding process, it is not damn hard to shut it down, avoiding that problem.

Comment Re:that is a lot of land if my calcs are correct (Score 1) 97

It is always good to have some numbers as reference for things that matter.

No one really should care if it is in fact 105 x 105 or even 150 x 150 miles, based on increased power usage. Or still the same, as the panels got more efficient than the power usage increased?

100 x 100 miles is a good number. As people simply are bad in grasping things. In Germany on a highway without speed limit, you can drive - with a reasonable speed, not recklessly - around it in 4 hours.

Other interesting numbers:
- circumference of the planet at the equator: nearly exactly 40,000 km. Why is it not exact, well, when the meter and hence the kilo meter (km) was invented, they made a measuring error. So the meter as a unit is off by a small fraction. Why did they pick 40k ? well actually they picked 10k km which is 1,000,000m from equator to pole as "unit". So from equator to a pole is 1/4 of the circumference ... (going from the pole back to the equator is one half, and then you have to go to the other pole), actually the "odd size" of the equator is not really an error, as distance to the pole is nearly exact.
- height of a geo stationary satellite: close to 1/1th of s light second (that is of course coincidence because of the mass and size of the earth)
- distance earth - moon, a bit more than a light second, roughly 1.25 light seconds

With your examples of 100 x 100 miles, you can extrapolate: similar size for Africa, and one for India and one for China, and less then half for Australia.

And then again: how many roofs are there in Los Angeles or Mexico or Tokyo?

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