[Vo]:A different role for 'absolute zero' -- was Re: Willian Thomson (Lord Kelvin) and absolute zero

[H LV]

This graph charts a different role for 'absolute zero'. It still
has mathematical significance but not as the lowest temperature.

https://drive.google.com/file/d/1OVi48gD3GKaEOxxVPC3IadBAJthKq7fa/view?usp=sharing

Note: The location of zero degrees Celsius on this graph is an
open question. Shifting zero degrees Celsius to the right or left won't
change the location of 'absolute zero' or the shape or relationship among
the curves.

Harry

On Mon, Nov 16, 2020 at 11:42 AM H LV  wrote:

> Here is a classroom demonstration of how to estimate absolute zero.
>
> Charles Law and absolute zero.
> https://www.youtube.com/watch?v=wkWo-8tY8cY
>
> Btw, if the temperatures and volumes of other gases are measured and
> plotted you will get lines with different slopes, but they will all
> converge on the same value of absolute zero. However, this is based on a
> _extrapolation_. Maybe the volume of a gas and its temperature don't
> maintain this linear relationship as the volume approaches zero. William
> Thomson (Lord Kelvin) first proposed  that this linear extrapolation was
> reliable. The demonstrator quotes him at about seven minutes into the
> video:
>
> << ...infinite cold must correspond to a finite number of degrees of the
> air-thermometer below zero;  if we push the strict principle of graduation,
> stated above, sufficiently far, we should arrive at a point corresponding
> to the volume of air being reduced to nothing, which would be marked as
> -273° of the scale (-100/.366, if .366 be the coefficient of expansion);
> and therefore -273° of the air-thermometer is a point which cannot be
> reached at any finite temperature, however low. >> footnote 6 from
> https://zapatopi.net/kelvin/papers/on_an_absolute_thermometric_scale.html
>
> I think it is illogical to propose a linear relationship exists all the
> way down to absolute zero. Air with no volume is an oxymoron. Linearity
> may be an excellent approximation over most scales,  but I would say
> below some small but finite volume the linear assumption breaks down with
> or without appeals to quantum mechanics.
> Harry
>

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[Ron Kita]

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[Vo]:CDC statistical dashboard on Covid

[JonesBeene]

For the numbers geeks out there – this imbedded statistical applet can be of 
interest-  although it is a bit clunky to use. This is generally always the 
case with useful but complex  data sets.

https://www.cdc.gov/nchs/nvss/vsrr/covid19/excess_deaths.htm#dashboard

There are weird and unexpected  trends here. Counterintuitive really. Some of 
the numbers do not follow the official narrative.

For instance, if you look at total deaths by age breakdown, you see (as 
expected) that 6 months ago - older Americans were hit hard. Very hear. But 
even in average years older citizens are hid hardest by the winter flu season.

We tend to think that this scenario has not changed in the last two months  but 
surprise, surprise.

Curious that in the last month, just as the infection rate has skyrocketed, the 
total death rate for older citizens has proportionately dropped down to  the 
previous 5 year average. In fact for those in the 65-75 category – they are 
actually living longer that in a normal year. 

That is remarkable and it could well change as soon as more data is collected 
and the trailing edge numbers come in.

To be clear, younger victims are stil far less likely to die this year compared 
to the past but older victims are no more likely to die (from any cause) than 
in previous “normal” (pre-pandemic) years and in fact may be surviving longer.

Of course, this could be because a disproportionate percentage of older 
Americans have already died in the early months of the pandemic.