What do you mean by 'noon'? If (and only if) one is standing exactly on the Greenwich Meridian, then the sun is at it highest at 12:00 GMT (hence 13:00 BST), isn't it? It is BST which is the 'abstraction', not GMT.
Kind Regards, John
Electrical Question in 'Pub Quiz'
- Thread starter CAWORK
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Kind Regards, John
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In general conversation the the word noon applies to 12 o'clock ( on the 24 hour clock ) o'clock irrespective of what where the person is and any day light saving scheme is active.
If you mean that 12:00 GMT (in the Winter) and 12:00 BST (in the Summer) are both considered as 'noon', then that's what I've been saying. However, as I've also said, if one tries to apply eric's (Latin-based, hence sun-based) definitions, then, say, 12:59 BST (in the summer) would be 'morning' ('AM') - would you agree with that?
Kind Regards, John
I think that 'noon' has probably been subjected to the dreaded "evolution" so it can mean whatever anyone wants it to mean.
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In this case, I don't think so. I think that, to everyone, 'noon' (and 'midday') are still both taken to mean (as they always have done) "12 o'clock during daytime, per one's clock/watch', regardless of whether ones watch/clock is (appropriately) set to GMT or BST.
I suppose you could argue that there has (a long time ago) been some 'evolution', in that, before we invented the concept of 'daylight saving' (BST or whatever), the sun was always at its highest (at the Greenwich Meridian) when our watches/clocks read 12:00 - but that ceased to be true, during Summer, once we introduced BST.
Kind Regards, John
True, but we have settled in the UK on the time at Greenwich. The m stands meridian which is the highest point of the sun achieves, in the sky over Greenwich, which is at 12:00 GMT.
Surely it is more the fault of the railways for making Penzance the same time as London.
What is the name for when the Sun is at its highest?
What is the name for when the Sun is at its highest?
The 'M' stands for 'mean' as even the rotation of the Earth is not accurate.
Going back to the topic of cable colours I was doing some rewiring of a lighting circuit last week. I got a reel of 1.5 mm T&E out of my workshop and proceeded to install it. All neatly clipped and looking good. I'd simply cut the cable ready to make the connections. I was a surprised when I stripped off the outer sheath to find black and red inner cores. I checked and the consumer unit has a warning label about mixed colours so I used the cable. What surprises me is that it had managed to lurk unused for so long.
As EFLI has said, the 'M' of GMT stands for 'Mean'.
That's all a bit confused - a meridian is a line of longitude, on the earth - nothing to do with the sun. The Greenwich Meridian is the line of longitude which passes through Greenwich.
If one is standing on the Greenwich Meridian, then, yes, and give or take tiny errors and variations, the sun will be at its highest in the sky at 12:00 GMT.
Kind Regards, John
That's not necessarily a surprise to those in a DIY forum, who aren't using cable by the van-load. I'm pretty sure that I have still got some unused, or virtually unused, reels of red/black T+E in my cellar!
Kind Regards, John
Why did you not get a reel of 1.0mm T &E out? 1.5mm is not necessary for lighting circuits.
Sigh
Greenwich Mean Time = GMT
Anti- Meridian = am (before)
Post- Meridian = pm (after)
Because I would need to buy that, the 1.5 cost nothing as I had it in my cellar.
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