v for frequency?...

[Commander Kinsey]

On Wed, 15 Mar 2023 22:08:19 -0000, <upsidedown@downunder.com> wrote:

On Wed, 15 Mar 2023 15:28:27 +0000, NY <me@privacy.net> wrote:


I can see an advantage in abbreviating \"c/s\" to \"Hz\", especially when it
is spoken aloud - \"482 mega hertz\" is shorter than \"482 mega cycles per
second\".

Are there any other SI units which are abbreviations for the reciprocal
of another SI unit? I suppose there\'s mho for conductance which is 1/R
(in ohms) and written as an upside-down omega. But that\'s not as widely
used.

For conductance (1/R), suspectance and admittance (1/Z) the unit is
Siemens (S).

That\'s a German manufacturing company. WTF was wrong with the mho?

And I think you meant susceptance. You were suspecting it was conducting?

 

[Gerhard Hoffmann]

Am 21.03.23 um 01:27 schrieb Commander Kinsey:

For conductance (1/R), suspectance and admittance (1/Z) the unit is
Siemens (S).

That\'s a German manufacturing company.  WTF was wrong with the mho?

No. Wernher von Siemens was one of our pioneers, like
Tesla, Marconi, Ohm, Ampère.
I was at his grave in Berlin-Kreuzberg. Quite modest.
I would have expected more for the founding father
of one of the world\'s most important electrical companies.
Like a fresh flower or two.

Gerhard

 

[Peeler]

On Tue, 21 Mar 2023 05:10:36 +0100, Gerhard Hoffmann, another mentally
deficient, troll-feeding senile asshole, blathered:


> No. Wernher von Siemens was one of our pioneers, like

Well, Birbrain is one of \"our\" dumbest sociopathic trolls in these groups
and you are one of the dumb troll-feeding senile assholes who can\'t resist
his endless idiotic baits, even though everyone knows what\'s the matter with
him. <G>

--
Birdbrain Macaw (now \"James Wilkinson\") about himself:
\"I can sleep outside in a temperature of -20C wearing only shorts\".
\"I once took a dump behind some bushes and slid down a hill to wipe my
arse\".
(Courtesy of Mr Pounder)

 

[Vir Campestris]

On 20/03/2023 19:12, SH wrote:

What are Imperial units????

I was brought up in the MKS and CGS system....

In the UK \"Imperial Units\" refers to miles, feet, pounds, pints and
suchlike. Noting that the imperial means British Empire, and the pint is
20 fluid ounces - not 16 as in the US.

I was taught in MKS, but imperial units were still in common use. Which
meant that if I put my hand in some water I\'d feel 20C, but the air
around it would be 68F and I\'d have to think to work out which was warmer

Andy

 

[Ian Jackson]

In message <op.114rjas2mvhs6z@ryzen.home>, Commander Kinsey
<CK1@nospam.com> writes

On Wed, 15 Mar 2023 22:08:19 -0000, <upsidedown@downunder.com> wrote:

On Wed, 15 Mar 2023 15:28:27 +0000, NY <me@privacy.net> wrote:


I can see an advantage in abbreviating \"c/s\" to \"Hz\", especially when it
is spoken aloud - \"482 mega hertz\" is shorter than \"482 mega cycles per
second\".

Are there any other SI units which are abbreviations for the reciprocal
of another SI unit? I suppose there\'s mho for conductance which is 1/R
(in ohms) and written as an upside-down omega. But that\'s not as widely
used.

For conductance (1/R), suspectance and admittance (1/Z) the unit is
Siemens (S).

That\'s a German manufacturing company. WTF was wrong with the mho?

I\'m of the same mind about the introduction of \'new\' units. While I
certainly don\'t advocate using (say) volts-per-amp instead of ohms, I
find myself feeling rather silly when I have to ask, \"WTF is a \'Siemen\'?
If their introduction is not resisted, the possibilities for puzzlement
and confusion are endless, eg what could we call a foot-per-second, or a
mile-per-hour?

And I think you meant susceptance. You were suspecting it was conducting?

--
Ian
Aims and ambitions are neither attainments nor achievements

 

[Ian Jackson]

In message <op.114red2fmvhs6z@ryzen.home>, Commander Kinsey
<CK1@nospam.com> writes

I wasn\'t aware cycles was an SI unit. When would you ever state \"79
cycles\"? It\'s not something you count like joules or metres.

\'Cycles\' are SO old hat. Doesn\'t everyone use \'hertz-seconds\'?

--
Ian
Aims and ambitions are neither attainments nor achievements

 

[The Natural Philosopher]

On 21/03/2023 04:10, Gerhard Hoffmann wrote:

Am 21.03.23 um 01:27 schrieb Commander Kinsey:

For conductance (1/R), suspectance and admittance (1/Z) the unit is
Siemens (S).

That\'s a German manufacturing company.  WTF was wrong with the mho?

No. Wernher von Siemens was one of our pioneers, like
Tesla, Marconi, Ohm, Ampère.
I was at his grave in Berlin-Kreuzberg. Quite modest.
I would have expected more for the founding father
of one of the world\'s most important electrical companies.
Like a fresh flower or two.

Gerhard

Siemens are the ones who bribed the EU to pass the renewable obligation,
and sponsored the Tory party here.
No, they are not a great company, they are just another German arm of
the Mafia
>

--
There is nothing a fleet of dispatchable nuclear power plants cannot do
that cannot be done worse and more expensively and with higher carbon
emissions and more adverse environmental impact by adding intermittent
renewable energy.

 

[John Larkin]

On Tue, 21 Mar 2023 16:40:13 +0000, Ian Jackson
<ianREMOVETHISjackson@g3ohx.co.uk> wrote:

In message <op.114red2fmvhs6z@ryzen.home>, Commander Kinsey
CK1@nospam.com> writes




I wasn\'t aware cycles was an SI unit. When would you ever state \"79
cycles\"? It\'s not something you count like joules or metres.

\'Cycles\' are SO old hat. Doesn\'t everyone use \'hertz-seconds\'?

We use Ohm-Siemens \"OS\" to name dimensionless things.

 

[Peeler]

On Tue, 21 Mar 2023 16:35:32 +0000, Idiot Jackson, the notorious,
troll-feeding, senile idiot, driveled again:


> I\'m

You\'re a troll-feeding senile HUGE ASSHOLE! Period!

 

[Peeler]

On Tue, 21 Mar 2023 16:40:13 +0000, Idiot Jackson, the notorious,
troll-feeding, senile idiot, driveled again:


> \'Cycles\' are SO old hat. Doesn\'t everyone use \'hertz-seconds\'?

At least not EVERY senile asshole feeds that troll, just the dumbest among
you!

 

[charles]

In article <tvcnns$63da$9@dont-email.me>,
The Natural Philosopher <tnp@invalid.invalid> wrote:

On 21/03/2023 04:10, Gerhard Hoffmann wrote:
Am 21.03.23 um 01:27 schrieb Commander Kinsey:

For conductance (1/R), suspectance and admittance (1/Z) the unit is
Siemens (S).

That\'s a German manufacturing company. WTF was wrong with the mho?

No. Wernher von Siemens was one of our pioneers, like
Tesla, Marconi, Ohm, Ampère.
I was at his grave in Berlin-Kreuzberg. Quite modest.
I would have expected more for the founding father
of one of the world\'s most important electrical companies.
Like a fresh flower or two.

Gerhard
Siemens are the ones who bribed the EU to pass the renewable obligation,
and sponsored the Tory party here.
No, they are not a great company, they are just another German arm of
the Mafia

and, I understood, were responsible for the late opening of the Elizabeth
Line.

--
from KT24 in Surrey, England - sent from my RISC OS 4té
\"I\'d rather die of exhaustion than die of boredom\" Thomas Carlyle

 

[SH]

On 21/03/2023 11:56, Vir Campestris wrote:

On 20/03/2023 19:12, SH wrote:

What are Imperial units????

I was brought up in the MKS and CGS system....

In the UK \"Imperial Units\" refers to miles, feet, pounds, pints and
suchlike. Noting that the imperial means British Empire, and the pint is
20 fluid ounces - not 16 as in the US.

I was taught in MKS, but imperial units were still in common use. Which
meant that if I put my hand in some water I\'d feel 20C, but the air
around it would be 68F and I\'d have to think to work out which was
warmer

Andy

What is miles, feet, pounds and pints????

 

[The Natural Philosopher]

On 21/03/2023 19:27, SH wrote:

On 21/03/2023 11:56, Vir Campestris wrote:
On 20/03/2023 19:12, SH wrote:

What are Imperial units????

I was brought up in the MKS and CGS system....

In the UK \"Imperial Units\" refers to miles, feet, pounds, pints and
suchlike. Noting that the imperial means British Empire, and the pint
is 20 fluid ounces - not 16 as in the US.

I was taught in MKS, but imperial units were still in common use.
Which meant that if I put my hand in some water I\'d feel 20C, but the
air around it would be 68F and I\'d have to think to work out which was
warmer

Andy


What is miles, feet, pounds and pints????
Imperial

--
New Socialism consists essentially in being seen to have your heart in
the right place whilst your head is in the clouds and your hand is in
someone else\'s pocket.

 

[NY]

On 21/03/2023 00:24, Commander Kinsey wrote:

On Wed, 15 Mar 2023 15:28:27 -0000, NY <me@privacy.net> wrote:
If I say 4 x 10^1, that means multiplying the 4 by the 10.  So if I say
4 x 10^-1, it\'s the same as taking the 4 and dividing it by 10.  So I
guess it makes sense.  Simpler to say 4/10 though.

I think I\'ve seen m.s^-1 and m/s equally.  Although I\'ve never known the
dot between m and s.

Maybe the dot was a \"funny\" of the Nuffield O/A level physics text books.

And then we get onto the thorny issue of \"traditional\" versus IUPAC
names for chemical compounds - acetic versus ethanoic acid, isopropyl
alcohol versus propan-2-ol: the traditional names are more familiar but
the IUPAC names are more systematic and more accurately represent how
the atoms are arranged. Familiar versus Sunday-school names ;-)

I prefer the new ones, they\'re more logical, although if I was old
enough to have learned the old ones, I probably would end up still
hanging onto them.  Just like I grew up with F, but started using C
around the 0 mark, as it was easier for 0 to be freezing point.  So I\'d
say it\'s 70 degrees in the living room, but minus 4 outside, using F for
inside and C for outside.  I now use C everywhere.  Rooms got a bit
cooler, since I used to say 70 was room temperature, now I say 20.  SI
units save power!

I\'ve just turned 60 so I was doing organic chemistry in the 6th form in
about 1980. I\'d heard a few traditional organic compounds such as
isopropyl alcohol, carbon tet(rachloride), formic acid, acetic acid. But
for most part organic names were brand new to me so I didn\'t have to
unlearn many traditional ones in order to learn IUPAC equivalents.

The changeover from deg F to deg C seemed remarkably painless. I\'m sure
I learned Fahrenheit from my parents when I was a child, but even they
adapted very quickly to Celsius when newspapers and TV weather forecasts
changed.

Fahrenheit always struck me as a bodged job (like so much of the
imperial system) - it was a case of \"what\'s the coldest and the hottest
temperatures we can create in the lab today? Right, let\'s call the
coldest one 0 and the hottest one 100. Oh, that makes ice freeze at 32
and water boil at 212.\" At least Celsius makes the freezing and boiling
point of the earth\'s most common liquid nice round numbers 0 and 100.

But the ultimate \"grates like chalk on a blackboard\"

It doesn\'t, fingernails do.  I had a teacher who would do that to stop
us chatting.  I had another who brought a huge wooden set square down on
a desk with great force.  Although one day it split in half and one half
flew across the room, missed the heads of a few kids who ducked, and
cracked the window.  Instead of the usual \"I like to make noise too!\" he
said \"oh dear\".

My old maths teacher (who died only last year, aged 101) was a rather
dour and irascible Irishman. But it was all an act: he had a well-hidden
wicked sense of humour. He had a huge wooden pair of compasses for
drawing circles on the blackboard. It had a metal spike on one end which
was protected by a rubber cork. One day he came to use the compasses and
stabbed himself on the spike. Quick as a flash he uttered the immortal
words \"Who\'s stolen the rubber off my prick?\"

The only distance I remember was my PE teacher shouting at me \"round the
perimeter!\" - a punishment for disobedience.  Since he was a bit queer,
we used to call it \"round the perimeter with your pants down!\"  This was
before peadophilophobia - one of my friends fucked a French teacher in
the swimming pool.  Nothing was said.

Lucky friend. My school had very few women teachers. The art teacher was
scary as hell: drop-dead gorgeous, built like a catwalk model, with
immaculate clothing, makeup, hair, perfume. And yet (there\'s always an
\"and yet\"!) she failed, totally and utterly, with the sin of Trying Too
Hard, as she walked round with her head in the air exuding an aura of
\"look at me\". For me, anyone who has to *try* to look attractive, isn\'t;
attractive women don\'t have to try, they just are, innately. The art
teacher used to walk around the library when she was taking Private
Study, making almost inaudible orgasmic moans - very off-putting when
she leaned over over you, letting her long hair dangle on your cheek
while she looked at what you were reading, and moaned so softly that you
wondered whether you\'d imagined it. She should have been the stuff of
every lad\'s wet dreams - but she wasn\'t. My chemistry teacher, on the
other hand, was small, rather plump, and had a strong Lancashire accent
that you could cut with a knife - but she was sex on legs, of the \"she
doesn\'t have to try - she just is\" variety.

Your PE story reminds me of cross-country running. This was supervised
by Bertie, the maths teacher I mentioned earlier. On a cold, foggy
afternoon, he would tick our names off while he was standing there in
his thick overcoat and scarf, \"cloaked with his breath\". Then he\'d get
in his nice warm car and drive up to the war memorial to tick us all off
again as we passed on the return journey. Back at school, he\'d deign to
get out of his car as the runners arrived back, to count us all back
into school. In the meantime, we\'d had to brave all the hazards: being
stoned (I kid you not) by the local kids, splashing through the puddles
in the mud on the unmade road, trying not to puke as we went past the
glue factory where they boiled up animal carcases, avoiding being zapped
by the fizzing electricity pylons, dodging the guard dogs that ran out
of the car breaker\'s yard. When someone commented to Bertie that he had
the easy part of the deal, as he didn\'t even run with us, he gave an
evil but utterly disarming and sheepish grin and uttered the immortal
words \"That\'s the privilege of age and experience, lads\".

 

[rbowman]

On Tue, 21 Mar 2023 23:24:59 +0000, NY wrote:

At least Celsius makes the freezing and boiling point of the
earth\'s most common liquid nice round numbers 0 and 100.

I suppose you get used to it and it doesn\'t make all that much difference
in everyday life but the compression throws me.

 

[Peeler]

On Tue, 21 Mar 2023 23:24:59 +0000, NY, the really endlessly blathering,
notorious, troll-feeding, senile asshole, blathered, yet again:

> words \"That\'s the privilege of age and experience, lads\".

Like what, you verbose senile bullshit artist? Feeding the trolls? It\'s
definitely a senile thing!

 

[Peeler]

On 22 Mar 2023 01:12:36 GMT, lowbrowwoman, the endlessly driveling,
troll-feeding, senile idiot, blabbered again:

I suppose you get used to it and it doesn\'t make all that much difference
in everyday life but the compression throws me.

That would be stuff for another lengthy interesting senile \"discussion\"
between you endlessly blathering senile shitheads and the trolling wanker,
wouldn\'t it? <BG>

--
Yet more of the so very interesting senile blather by lowbrowwoman:
\"My family loaded me into a \'51 Chevy and drove from NY to Seattle and
back in \'52. I\'m alive. The Chevy had a painted steel dashboard with two
little hand prints worn down to the primer because I liked to stand up
and lean on it to see where we were going.\"
MID: <j2kuc1F3ejsU1@mid.individual.net>

 

[The Natural Philosopher]

On 21/03/2023 23:24, NY wrote:

Fahrenheit always struck me as a bodged job (like so much of the
imperial system) - it was a case of \"what\'s the coldest and the hottest
temperatures we can create in the lab today? Right, let\'s call the
coldest one 0 and the hottest one 100. Oh, that makes ice freeze at 32
and water boil at 212.\" At least Celsius makes the freezing and boiling
point of the earth\'s most common liquid nice round numbers 0 and 100.

AIUI It was \'the hottest and coldest temperatures recorded in Paris\' or
somesuch

It has the virtue that temps down near 0 are BLOODY COLD and weather up
around the 100 mark is BLOODY HOT.



--
A lie can travel halfway around the world while the truth is putting on
its shoes.

 

[The Natural Philosopher]

On 22/03/2023 01:12, rbowman wrote:

On Tue, 21 Mar 2023 23:24:59 +0000, NY wrote:

At least Celsius makes the freezing and boiling point of the
earth\'s most common liquid nice round numbers 0 and 100.

I suppose you get used to it and it doesn\'t make all that much difference
in everyday life but the compression throws me.

Indeed you DO get used to it.

And its difficult to tell the difference between one celsius and the
next one up.
--
A lie can travel halfway around the world while the truth is putting on
its shoes.

 

[NY]

\"The Natural Philosopher\" <tnp@invalid.invalid> wrote in message
news:tvf08h$l0k5$2@dont-email.me...

On 22/03/2023 01:12, rbowman wrote:
On Tue, 21 Mar 2023 23:24:59 +0000, NY wrote:

At least Celsius makes the freezing and boiling point of the
earth\'s most common liquid nice round numbers 0 and 100.

I suppose you get used to it and it doesn\'t make all that much difference
in everyday life but the compression throws me.

Indeed you DO get used to it.

And its difficult to tell the difference between one celsius and the next
one up.

By \"compression\" do you mean the fact that the range from freezing to
boiling is only 100 degrees Celsius but is 180 degrees Fahrenheit?

Given that there are fewer degrees C than degrees F in a given range of
temperatures (so each degree is \"bigger\"), I\'d have thought that a change
from n deg C to n+1 deg C would be *more* noticeable than a change from n
deg F to n+1 deg F.

I imagine that apart from in America, the number of people who still use and
prefer F to C is dwindling as older people (who know F) die off and new
people (who are brought up with C) are born.

I like a lot of things about \"the way we sued to do it in the past\" but I
draw the line at absurd systems of measurement like deg F, inches, feet,
yard, miles, ounces, pounds, stones, hundredweight which use every base
under the sun except the only one that matters - base 10 which we are taught
to calculate in. There are also units which have the same name but different
sizes: for example the apothecaries, troy and avoirdupois definitions of the
dram/drachm and ounce, and the UK and US definition of pint and gallon
having different numbers of fluid ounces. And the \"little\" problem that the
volumetric and linear measurements are not related by a simple integer: in
the UK, 1 gallon is 277.4 in^3
https://www.convertunits.com/from/cubic+inch/to/imperial+gallon. When I
wanted to estimate the weight of a full hot water cylinder (which was not
marked with its volume), having only an inches tape measure and no
calculator (and no access to a phone to phone-a-friend) I had to convert
everything to metric because I knew that 1000 cc was a litre whcih weighed a
kilogramme, whereas I hadn\'t the remotest idea of the imperial equivalent
cubic inches to gallons (where a gallon weighs 10 lb - I knew that bit).