MigL

The lessons to be learned from carpentry. I like it.

Is that why nearly half of Americans would rather live here ? ( OK, maybe not for the weather ) By the way, most of our aboriginals are still around; they were mostly exterminated in mass genocides of the 1800s, in the US. And if they so choose, they can take advantage of every opportunity non-aboriginal Canadians have. It's hard to accommodate people who choose their 'own' way of life, but demand it be exactly the same as everyone else's. It's very hard when aboriginals demand self-governance as a 'separate' nation, but also want support, infrastructure, housing, etc. from the rest. It's even harder when they demand their own separate justice system and penal code, then complain about the lawlessness. It's most difficult when they flout the law, partake in illegal gun sales ( funny how aboriginals are allowed semi-automatic assault rifles, but the rest of us are not ), illegal gambling, cigarette, booze and gasoline sales, and moan about lack of rights. Need I go on ? Last I checked our death rate in Canada is much lower than the US, and the standard treatment for Covid-19 is self-isolation unless hospitalization is NEEDED. That means sitting at home doing nothing; Or would you rather you mother went out shopping, to infect even more people ? And considering what your health care cost you, it is damn fine system. The US isn't too far from Montreal. Check into an American hospital. See if you get better treatment. And bring you life savings with you. This is the Science Forums DISCUSSION site, not the RANT site. And to paraphrase Americans in the 60s, "Canada, take it or leave it". (my apologies to the rest of the membership for the counter-rant )

You can try messaging DrP; I believe he was a coatings chemist. ( haven't heard from him in a while )

I know what you mean, and the liberation/generation of CO2 is a concern for the vast majority of people. That being said, CO2 is not waste. It is essential for life on the planet, and part of a 'cycle'. ( its constituents are the basis for all life on the planet ) Certainly not the definition of waste

More than likely confusion between Planck energy and Planck's constant. ( which is related to quantum of action )

You failed miserably, Swans; can't wear either of those on your wrist . Are you fishing for a raise, by buttering up your employer ?

And we haven't 'seen' that for 50 years. Why was going to the Moon so important 50 years ago ? But today, the 'bean counters' who are in charge ( of everything ), always justify cutting funding with cost/benefit analysis.

Given the vastness of time and space, I wouldn't be surprised if there are BHs much closer than that. This one was only detected because of the favorable arrangement of orbiting stars in that system. Lone BHs, where the dust/gas from the supernova event has long since dissipated, or encouraged an existing nebula to Pop.I star formation ( in galactic arms, where we are ), would be almost impossible to detect

Conspiracy theories propagate among non-critical thinkers, simply because you cannot disprove something that has no evidence, or basis in facts.

That is one slippery looking floor. Would be an invitation for lawsuits, in a business setting.

Umm, a singularity is non-sensical, it is the point where mathematical models diverge to infinities. And they have no dimensions, making 'within a singularity' even more non-sensical. People would take you more seriously, if you knew the difference between a singularity and a horizon. ( not that it makes a difference to the rest of the word salad ) You should learn some !

What the he*l is going on in the UK ? The Covid-19 death toll has now surpassed Italy's death toll. Not good. Is the NHS badly supported ( staffing, supplies, ventilators, blood thinners, etc. ), incompetent, or are other factors at play ?

Well, this went off the rails in a spectacular fashion...

I was thinking of more 'local' phenomena, like trying to induce micro BH formation at the LHC...

So is the mass. According to fairly well understood stellar nuclear fusion. The volume change is more dependent on temperature, and resultant radiation pressure, in conflict with mass, and resultant gravitational contraction pressure.

Stars don't decay to 'nothing'. Keep digging.

There is no 'lines' in space or space-time. There are in the mathematical model. Can you show me a tensor, or is it a mathematical concept ?

While energy will contribute to the geometry of space-time, just as mass does, it does not curve in any way. You can in fact, argue that even space-time doesn't 'curve', but geometric curvature in the mathematical model ( GR ) effectively reproduce observational evidence. After all, space-time is merely a mathematical concept, a co-ordinate system geometry, if you will. Unless you are confusing energy with light, and the fact that light follows null geodesics ( curved by gravity ).

Yeah, but I can't keep up with 'modern' usage. It changes way too quick . Apparently I'm out of bed, showered, shaved and dressed, but I'm not 'woke' yet.

That interpretation is in the 'ear of the listener'. An alarmist, by definition, sounds, or voices, an alarm. Humans have a bad habit of changing definitions to suit their purposes/agendas. You need to consider the source using the term, to deduce the agenda of that source. I certainly wouldn't be offended at being called an 'alarmist' for pulling the fire alarm in a burning building.

I wouldn't think a BH could remain a BH if its mass wasn't equivalent, or greater than (Rs*c^2)/(2*G). It doesn't make sense, then again nothing about BHs is common sense. I had read about J A Wheeler's Geons ( gravitationally constrained ( non-singular ) EM radiation, but can't seem to find anything by L Susskind on gravitationally collapsed photons with a simple google search.

The 'reverse Flynn effect' coincides rather nicely with the technologization of Western societies. It has been ongoing since the 90s but wasn't an issue in the preceding 50 years. I still think it correlates rather nicely with rising ADD, and reduced attention span, of adolescents.

Hadn't even noticed the part that involved acceleration; I just assumed it meant a higher speed. So, assume you have a mass on the verge of gravitational collapse to a BH. And you accelerate it such that the fields and/or dynamics of the system lead to gravitational collapse. What happens if you remove the accelerated condition/field geometries/system dynamics ? Does the BH drop its event horizon, and pop ( very big pop ) back into 'normal' space-time ? Or does it continue as a BH ?

Didn't we have a thread, a few years ago, about making a sailboat move by mounting a fan on that sailboat, aimed at the sail ?

It's also a fact that attention span is declining in most technologically advanced countries. Since a large part of IQ testing involves pattern recognition, maybe we don't have the attention span to recognize patterns as quickly. Anyway, when you find an IQ test that challenges differing cultures/economic status equitably, then maybe you can draw some conclusions.