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Barometers and average pressure
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.
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Barometers and average pressure
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 and average pressure
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. |
Barometers and average pressure
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 |
Barometers and average pressure
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? |
Barometers and average pressure
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. |
Barometers and average pressure
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. |
Barometers and average pressure
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. |
Barometers and average pressure
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! |
Troll-feeding Senile ASSHOLE Alert!
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! |
Troll-feeding Senile ASSHOLE Alert!
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 |
Troll-feeding Senile ASSHOLE Alert!
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 |
Barometers and average pressure
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. |
Barometers and average pressure
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 news:op.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. |
Barometers and average pressure
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. |
Troll-feeding Senile ASSHOLE Alert!
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! |
Barometers and average pressure
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. |
Barometers and average pressure
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 |
Troll-feeding Senile ASSHOLE Alert!
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! |
Barometers and average pressure
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. |
Barometers and average pressure
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 |
Barometers and average pressure
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. |
Barometers and average pressure
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? |
Barometers and average pressure
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 |
Barometers and average pressure
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. |
Barometers and average pressure
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 |
Barometers and average pressure
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. |
Barometers and average pressure
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. |
Barometers and average pressure
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. |
Barometers and average pressure
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. |
Barometers and average pressure
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. |
Troll-feeding Senile ASSHOLE Alert!
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? |
Troll-feeding Senile ASSHOLE Alert!
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! |
Troll-feeding Senile ASSHOLE Alert!
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 |
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