njarboe

54 ms·

661.
by njarboe 6y ago
I find it very interesting how the transcript put online is not the same as the original in significant ways. It is great that the pdf is available, but that is not what is going to be searchable on the web (especially with the quality of t
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The Degree of Fine-Tuning in Our Universe – and Others(arxiv.org)
2 points by njarboe 6y ago|0 comments
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by njarboe 6y ago
The Anthropic principle idea that this universe's physical properties can't vary much and produce carbon/hydrogen/oxygen (CHO) based life on the surface of planets is probably not correct and was just popularized many de
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by njarboe 6y ago
"they'll get into legal trouble" They may get into legal trouble. My mom had her checkbook stolen that was in her luggage and the person used the checking account to pay for an electricity bill. She reported it to the police,
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by njarboe 6y ago
Good point. Back then salt was valuable in places just short distances from the ocean. Humans need salt, especially when doing hard physical labor, sweating all day.
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by njarboe 6y ago
Forest fire hazard is always present at the end of the summer going into the fall in California until the first big rains. It is a Mediterranean climate and it does not rain at all from May till Oct/Nov (with much variation). They had
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by njarboe 6y ago
I agree, a journalists description of such new fusion concept is unlikely to be useful to people trying to understand what is new about the concept. I am not a fusion scientist, but my dad is the "Tom Jarboe" in the article. From
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by njarboe 6y ago
A way to store a surplus food that contains high protean and fat is another huge benefit of dairy. Hard cheeses can be stored for years in the right conditions and these conditions are achievable for ancient people (caves).
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by njarboe 6y ago
What is interesting is that one can use current in the plasma itself (which creates a magnetic field) to confine the plasma, if one can control the current well enough. This design [1] does that. Unfortunately DOE funding for new fusion con
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by njarboe 6y ago
Yes. And I find it annoying when HBO plays ads for their shows before starting what I have selected to watch. They started doing this a year or two ago.
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by njarboe 6y ago
The $1/2 billion they had to spend due to paperwork related to certification of the design. From an earlier comment[1] from a different thread about this approval quoting NuScale's press release: "NuScale spent over $500 mill
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by njarboe 6y ago
Now this article has posted a correction but has not changed the headline: "CORRECTION: Penn State Health later clarified that the 30-35% figure pertaining to COVID-19-positive Big Ten athletes verbally shared with Dr. Wayne Sebastiane
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by njarboe 6y ago
Almost everything on Earth contains some potassium, uranium, or thorium and thus is radioactive. Its all nuclear waste (from many big, nuclear events in the cosmos), just different varieties
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by njarboe 6y ago
2k a month is not in my current (one can dream) budget for news sources, but I would like to check one out sometime. I don't need the real time option, which is much of what people pay the 2k for, so maybe a 15 minute delay option, lik
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by njarboe 6y ago
That was a "hard to believe this is true, but it is in Bloomburg" moment for me. A nice summary of the situation a year after the article came out in 2018 can be found here[1]. I wonder what their rational for not retracting the s
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by njarboe 6y ago
I would pay quite a bit for a newspaper in Jefferson's proposed format. To be quite certain that something is true for current events, the reports on those events would likely have to be delayed days or weeks after they broke. I would
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by njarboe 6y ago
One should note that propellantless propulsion systems exist. They are called lasers. It is just that the thrust to weight ratio of such an engine is very low. A quick google search does not bring back any designs or research papers of such
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by njarboe 6y ago
Good idea to do this with your passport, also, when visiting abroad.
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by njarboe 6y ago
You don't have to show ID to get past security at the airport. Lose your wallet on vacation and you can still fly home. Tell them you don't have ID and you'll get a special security check. How that will work in practice at di
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by njarboe 6y ago
This certification is great news. I wonder how much sooner one of these small reactor designs would have come to market if there was $50 million dollars of paperwork needed in instead of $1/2 billion.
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by njarboe 6y ago
You can only keep your previous property tax assessment level if you buy another property that is worth less than the one you sell and you buy in the same county (a few counties join together in this rule). If you want to move from a small
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by njarboe 6y ago
Prop 13 is slowly recreating a feudal land-holding aristocracy in California. In feudal Europe the aristocracy did not pay taxes on land in exchange for fighting and providing other knights in times of war(a bit of simplification). Other la
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by njarboe 6y ago
I like this idea. From my limited reading and understanding, the nervous system/brain and body seems to function as a huge number of feedback loops where the nerves are predicting a response in the body to a nerve firing event, doing t
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by njarboe 6y ago
Yes, private ownership would lead to tree farms which might find that clear cutting is the best way to maximize output. With regulations on soil runoff, I don't see that as a problem. My proposal was one that might have a chance of bei
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by njarboe 6y ago
You don't need to, as you point out that is the current case, but I think that private ownership would do a better job of extracting economic value from land that we want to put to economic use. Motorized recreational forest and timber
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by njarboe 6y ago
The first steam engines spontaneously exploded. The first internal combustion engines spontaneously exploded. I'm sure the first helicopters did also. Nobody has really tried to advance rocket technology since the early 1970's. Th
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by njarboe 6y ago
Yes that would be cool. Unfortunately almost all of the old growth forest in the US was cut down and new trees of the size of old will take hundreds of years to grow. Many of the wilderness areas set aside in the 1970 had old growth forests
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by njarboe 6y ago
The current biggest fires are not in the Sierra Nevada and the ones in the coastal range tend to burn more structures because there are more of them, but there are also many large fires in the Sierra Nevada at the moment. Check out this map
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by njarboe 6y ago
In war time patents are suspended or the government forces everyone to cross license. Along with the hard focused work, I think this is a big reason why tech advanced so much during WWI and WWII.
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by njarboe 6y ago
Can't really know until you try. The physics does not prevent the possibility. Elon and the people at SpaceX are not just hand waving but actually working hard on making it a reality. Hope they do it. A lot of people are willing to pa

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