Why do barometers have different centre readings? I thought 1000 mbar was average, as that's what barometers always used to have as the central reading ("change"), but Wikipedia says it's 1013. I've seen some newer ones with 1010 as the centre.

On 06/02/2020 14:00, Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen some
newer ones with 1010 as the centre.

In space the average is 0 mbar

On 06/02/2020 14:11, Andy Bennet wrote:
On 06/02/2020 14:00, Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen
some newer ones with 1010 as the centre.

In space the average is 0 mbar

The same as the pressure between your ears.

In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar was
average, as that's what barometers always used to have as the central
reading ("change"), but Wikipedia says it's 1013. I've seen some newer
ones with 1010 as the centre.

On mine it's 29.5 inches

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On Thu, 06 Feb 2020 14:11:13 -0000, Andy Bennet wrote:

On 06/02/2020 14:00, Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen some
newer ones with 1010 as the centre.

In space the average is 0 mbar

Barometers tend to be used on the ground.

So how come the bar was taken to be slightly different to mean sea level pressure? Was it measured inaccurately when they invented it?

On 06/02/2020 14:00, Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen some
newer ones with 1010 as the centre.

A bar is not defined as 1 atmosphere (average) pressure. Just happens to
be close (within 1% of it).
1 bar is equivalent to 100 kPa where 1 Pa (Pascal) is a defined SI unit
pressure of 1 Newton per m2.

On Thu, 06 Feb 2020 14:27:40 -0000, charles wrote:

In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar was
average, as that's what barometers always used to have as the central
reading ("change"), but Wikipedia says it's 1013. I've seen some newer
ones with 1010 as the centre.

On mine it's 29.5 inches

Phwoar! ;-)

All mine have both measurements. It would appear it should be corrected for altitude, but that would mean a rotatable dial. I've got an app on my phone that does it, it'll be interesting to see if it changes the centre position with altitude, 1010 mbar is about right for here.

On Thu, 06 Feb 2020 14:45:52 -0000, Andy Bennet wrote:

On 06/02/2020 14:00, Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen some
newer ones with 1010 as the centre.

A bar is not defined as 1 atmosphere (average) pressure. Just happens to
be close (within 1% of it).
1 bar is equivalent to 100 kPa where 1 Pa (Pascal) is a defined SI unit
pressure of 1 Newton per m2.

So pot luck or something inaccurate in the past? The history of it sounds interesting.

On Thu, 06 Feb 2020 14:45:52 -0000, Andy Bennet wrote:

On 06/02/2020 14:00, Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen some
newer ones with 1010 as the centre.

A bar is not defined as 1 atmosphere (average) pressure. Just happens to
be close (within 1% of it).
1 bar is equivalent to 100 kPa where 1 Pa (Pascal) is a defined SI unit
pressure of 1 Newton per m2.

Religious folk would say this was a 1% error made by god :-)
So he isn't infallible!

On Thu, 06 Feb 2020 14:00:19 -0000, Birdbrain Macaw (aka "Commander Kinsey",
"James Wilkinson", "Steven ******","Bruce Farquar", "Fred Johnson, etc.),
the pathological resident idiot and attention whore of all the uk ngs,
blathered again:

FLUSH more of the PROVEN clinically insane sociopathic attention whore's
latest attention-baiting bull**** unread again

--
about Birdbrain Macaw's (now "James Wilkinson" LOL)
trolling:
"He is a well known attention seeking troll and every reply you
make feeds him.
Starts many threads most of which die quick as on the UK groups anyone
with sense Kill filed him ages ago which is why he now cross posts to
the US groups for a new audience.
This thread was unusual in that it derived and continued without him
to a large extent and his silly questioning is an attempt to get
noticed again."
MID:

--
ItsJoanNotJoann addressing Birdbrain Macaw's (now "James Wilkinson" LOL):
"You're an annoying troll and I'm done with you and your
stupidity."
MID:

--
AndyW addressing Birdbrain:
"Troll or idiot?...
You have been presented with a viewpoint with information, reasoning,
historical cases, citations and references to back it up and wilfully
ignore all going back to your idea which has no supporting information."
MID:

--
Phil Lee adressing Birdbrain Macaw:
"You are too stupid to be wasting oxygen."
MID:

--
Phil Lee describing Birdbrain Macaw:
"I've never seen such misplaced pride in being a ****ing moronic motorist."
MID:

--
Tony944 addressing Birdbrain Macaw:
"I seen and heard many people but you are on top of list being first class
ass hole jerk. ...You fit under unconditional Idiot and should be put in
mental institution.
MID:

--
Pelican to Birdbrain Macaw:
"Ok. I'm persuaded . You are an idiot."
MID:

--
DerbyDad03 addressing Birdbrain Macaw (now "James Wilkinson" LOL):
"Frigging Idiot. Get the hell out of my thread."
MID:

--
Kerr Mudd-John about Birdbrain Macaw (now "James Wilkinson" LOL):
"It's like arguing with a demented frog."
MID:

--
Mr Pounder Esquire about Birdbrain Macaw (now "James Wilkinson" LOL):
"the **** poor delivery boy with no hot running water, 11 cats and
several parrots living in his hovel."
MID:

--
Rob Morley about Birdbrain:
"He's a perennial idiot"
MID: 20170519215057.56a1f1d4@Mars

--
JoeyDee to Birdbrain
"I apologize for thinking you were a jerk. You're just someone with an IQ
lower than your age, and I accept that as a reason for your comments."
MID: l-september.org

--
Sam Plusnet about Birdbrain (now "James Wilkinson Sword" LOL):
"He's just desperate to be noticed. Any attention will do, no matter how
negative it may be."
MID:

--
asking Birdbrain:
"What, were you dropped on your head as a child?"
MID:

--
Christie addressing endlessly driveling Birdbrain Macaw (now "James
Wilkinson" LOL):
"What are you resurrecting that old post of mine for? It's from last
month some time. You're like a dog who's just dug up an old bone they
hid in the garden until they were ready to have another go at it."
MID:

--
Mr Pounder's fitting description of Birdbrain Macaw:
"You are a well known fool, a tosser, a pillock, a stupid unemployable
sponging failure who will always live alone and will die alone. You will not
be missed."
MID:

--
Richard to pathetic ****** Hucker:
"You haven't bred?
Only useful thing you've done in your pathetic existence."
MID:

--
about Birdbrain (now "James Wilkinson" LOL):
""not the sharpest knife in the drawer"'s parents sure made a serious
mistake having him born alive -- A total waste of oxygen, food, space,
and bandwidth."
MID:

--
Mr Pounder exposing sociopathic Birdbrain:
"You will always be a lonely sociopath living in a ******** with no hot
running water with loads of stinking cats and a few parrots."
MID:

--
francis about Birdbrain (now "James Wilkinson" LOL):
"He seems to have a reputation as someone of limited intelligence"
MID:

--
Peter Moylan about Birdbrain (now "James Wilkinson" LOL):
"If people like JWS didn't exist, we would have to find some other way to
explain the concept of "invincible ignorance"."
MID:

--
Lewis about nym-shifting Birdbrain:
"Typical narcissist troll, thinks his **** is so grand he has the right to
try to force it on everyone."
MID:

On Thu, 6 Feb 2020 14:11:13 +0000, Andy Bennet, another troll-feeding senile
idiot, blathered:


In space the average is 0 mbar

On average he's a clinically insane trolling ****** and you are a senile
troll-feeding idiot!

On Thu, 06 Feb 2020 14:27:40 +0000 (GMT), charles, another mentally
challenged, troll-feeding senile asshole, blathered:


On mine it's 29.5 inches

And yet another senile idiot came hopping along who couldn't resist taking
the clinically insane attention whore's latest idiotic bait! tsk

On Thu, 6 Feb 2020 14:45:52 +0000, Andy Bennet, the demented, troll-feeding,
senile asshole, blathered again:


A bar is not defined as 1 atmosphere (average) pressure. Just happens to
be close (within 1% of it).
1 bar is equivalent to 100 kPa where 1 Pa (Pascal) is a defined SI unit
pressure of 1 Newton per m2.

YOU are equivalent to a troll-feeding senile asshole, senile twit! tsk

Oh I'm not so sure.
It does get a little awkward with QNH and QFE, the latter being field
elevation of course.
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Andy Bennet" wrote in message
o.uk...
On 06/02/2020 14:11, Andy Bennet wrote:
On 06/02/2020 14:00, Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen some
newer ones with 1010 as the centre.

In space the average is 0 mbar

The same as the pressure between your ears.

What exactly do you mean by centre and average pressure. Surely with a
barometer all you need to know iis the standard elevation of where it is and
its then judged relative to that.
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Commander Kinsey" wrote in message
newsp.0fkjut2bwdg98l@glass...
Why do barometers have different centre readings? I thought 1000 mbar was
average, as that's what barometers always used to have as the central
reading ("change"), but Wikipedia says it's 1013. I've seen some newer
ones with 1010 as the centre.

On Thu, 06 Feb 2020 14:49:36 -0000, Commander Kinsey wrote:

It would appear it should be corrected for altitude, but that would mean
a rotatable dial.

Or an adjustment screw on the back for an aneroid barometer or a
moveable linear scale on a mercury one. About 50 mb of adjustment
needed here.

--
Cheers
Dave.

On Thu, 06 Feb 2020 16:21:22 +0000 (GMT), Dave Liquorice, another absolutely
brain dead, troll-feeding, senile asshole, blathered:


Or an adjustment screw

You two idiots need a few screws adjusted inside your stupid heads!

On Thu, 06 Feb 2020 16:21:22 -0000, Dave Liquorice wrote:

On Thu, 06 Feb 2020 14:49:36 -0000, Commander Kinsey wrote:

It would appear it should be corrected for altitude, but that would mean
a rotatable dial.

Or an adjustment screw on the back for an aneroid barometer or a
moveable linear scale on a mercury one. About 50 mb of adjustment
needed here.

Yes it could be easily done. Although.... should it be done? If you're at a higher altitude, you have lower pressure, but you also have more cloud. Clouds tend to hang around mountains.

Because the pointer shows good weather to the right of centre and bad weather to the left, with the centre being nominal pressure. But that nominal pressure varies with altitude. There is no way to adjust the barometer for altitude.

On Thu, 06 Feb 2020 16:16:56 -0000, Brian Gaff (Sofa 2) wrote:

What exactly do you mean by centre and average pressure. Surely with a
barometer all you need to know iis the standard elevation of where it is and
its then judged relative to that.
Brian

On Thu, 6 Feb 2020 16:16:56 -0000, Brainless & Daft, the notorious,
troll-feeding senile idiot, blathered again:

What exactly do you mean by centre and average pressure. Surely with a
barometer all you need to know iis the standard elevation of where it is and
its then judged relative to that.
Brainless & Daft

Yep, YOU were the one still missing among all the troll-feeding senile
retards here, Brainless & Daft!

On Thu, 06 Feb 2020 20:17:31 -0000, Commander Kinsey wrote:

Because the pointer shows good weather to the right of centre and bad
weather to the left, with the centre being nominal pressure. But that
nominal pressure varies with altitude.

Which is why you have to compensate for altitude. Current standard
pressure is about 1020 (Set Fair). Current real pressure is 970
(Stormy). The weather is dead calm, clear and dry. ie that associated
with 1020.

There is no way to adjust the barometer for altitude.

Crap barometer or you've not found tweak yet.

--
Cheers
Dave.

On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar was
average, as that's what barometers always used to have as the central
reading ("change"), but Wikipedia says it's 1013. I've seen some newer
ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

SteveW

On Thu, 06 Feb 2020 20:35:06 -0000, Dave Liquorice wrote:

On Thu, 06 Feb 2020 20:17:31 -0000, Commander Kinsey wrote:

Because the pointer shows good weather to the right of centre and bad
weather to the left, with the centre being nominal pressure. But that
nominal pressure varies with altitude.

Which is why you have to compensate for altitude. Current standard
pressure is about 1020 (Set Fair). Current real pressure is 970
(Stormy). The weather is dead calm, clear and dry. ie that associated
with 1020.

There is no way to adjust the barometer for altitude.

Crap barometer or you've not found tweak yet.

Show me a photograph of your model of barometer that has this.

On Thu, 06 Feb 2020 21:07:40 -0000, Steve Walker wrote:

On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar was
average, as that's what barometers always used to have as the central
reading ("change"), but Wikipedia says it's 1013. I've seen some newer
ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

Are you one of those Merkins?

In article op.0fk362g1wdg98l@glass,
Commander Kinsey wrote:
On Thu, 06 Feb 2020 21:07:40 -0000, Steve Walker wrote:

On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen
some newer ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

Are you one of those Merkins?

y barometer has the name of an old established Edinburgh company on the
dial.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

Commander Kinsey wrote:
On Thu, 06 Feb 2020 21:07:40 -0000, Steve Walker
wrote:
On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000
mbar was average, as that's what barometers always used to have as
the central reading ("change"), but Wikipedia says it's 1013. I've
seen some newer ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

Are you one of those Merkins?

**** off Hucker.

On 06/02/2020 21:34, charles wrote:
In article op.0fk362g1wdg98l@glass,
Commander Kinsey wrote:
On Thu, 06 Feb 2020 21:07:40 -0000, Steve Walker wrote:

On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen
some newer ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

Are you one of those Merkins?

y barometer has the name of an old established Edinburgh company on the
dial.

And ours has the name of a Brighton company on it - but not on the dial,
as it hasn't got one, being a traditional mercury barometer.

SteveW

On Thu, 06 Feb 2020 21:19:14 -0000, Commander Kinsey wrote:

There is no way to adjust the barometer for altitude.

Crap barometer or you've not found tweak yet.

Show me a photograph of your model of barometer that has this.

CBA GIYF

--
Cheers
Dave.

On Thu, 06 Feb 2020 22:07:02 -0000, Dave Liquorice wrote:

On Thu, 06 Feb 2020 21:19:14 -0000, Commander Kinsey wrote:

There is no way to adjust the barometer for altitude.

Crap barometer or you've not found tweak yet.

Show me a photograph of your model of barometer that has this.

CBA GIYF

Google cannot determine the model of barometer in your house. Google street maps isn't that good.

On Thu, 06 Feb 2020 21:35:45 -0000, Mr Pounder Esquire wrote:

Commander Kinsey wrote:
On Thu, 06 Feb 2020 21:07:40 -0000, Steve Walker
wrote:
On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000
mbar was average, as that's what barometers always used to have as
the central reading ("change"), but Wikipedia says it's 1013. I've
seen some newer ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

Are you one of those Merkins?

**** off Hucker.

**** off Pound Her.

On Thu, 06 Feb 2020 22:06:58 -0000, Steve Walker wrote:

On 06/02/2020 21:34, charles wrote:
In article op.0fk362g1wdg98l@glass,
Commander Kinsey wrote:
On Thu, 06 Feb 2020 21:07:40 -0000, Steve Walker wrote:

On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen
some newer ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

Are you one of those Merkins?

y barometer has the name of an old established Edinburgh company on the
dial.

And ours has the name of a Brighton company on it - but not on the dial,
as it hasn't got one, being a traditional mercury barometer.

Bloody hell how old are you? I'm 44 and there's one that was made before I was born with a dial.

On Thu, 06 Feb 2020 21:34:21 -0000, charles wrote:

In article op.0fk362g1wdg98l@glass,
Commander Kinsey wrote:
On Thu, 06 Feb 2020 21:07:40 -0000, Steve Walker wrote:

On 06/02/2020 14:27, charles wrote:
In article op.0fkjut2bwdg98l@glass,
Commander Kinsey wrote:
Why do barometers have different centre readings? I thought 1000 mbar
was average, as that's what barometers always used to have as the
central reading ("change"), but Wikipedia says it's 1013. I've seen
some newer ones with 1010 as the centre.

On mine it's 29.5 inches

Snap.

Are you one of those Merkins?

y barometer has the name of an old established Edinburgh company on the
dial.

Yes a long long long time ago, the UK used the imperial ****. We moved on. America didn't.

On Thu, 06 Feb 2020 21:34:21 +0000 (GMT), charles, another mentally
challenged, troll-feeding senile asshole, blathered:


y barometer has the name of an old established Edinburgh company on the
dial.

Are you sure, you demented senile sucker of troll cock?

On Thu, 06 Feb 2020 20:35:06 +0000 (GMT), Dave Liquorice, another mentally
challenged, troll-feeding senile asshole blathered:


There is no way to adjust the barometer for altitude.

Crap barometer or you've not found tweak yet.

He's a crap troll; and you are a crap troll-feeding senile ASSHOLE, senile
idiot!

On Thu, 06 Feb 2020 22:07:02 +0000 (GMT), Dave Liquorice, another mentally
challenged, troll-feeding senile asshole blathered:


Show me a photograph of your model of barometer that has this.

CBA GIYF

Yep, senile asshole, THAT's the way to entertain a clinically insane
attention-starved troll! tsk