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Great ikeharel 2021-03-09 11:14

Half plane this time, Lucas, but since i love planes pictures I looked out this specific one with the registration CS-TOH it is an Airbus A330-223 of TAP, a 24 years in service, with a seat confighuration of 259 passangers, powered by two PW4168A turbo-fan engines.
A very close-range picture on the main page - but personally I prefer the full view WS picture, looks great there.
Boa tardes,
Ike

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Old 03-09-2021, 10:41 PM
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mkamionka mkamionka is offline
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Default To PaulVDV: latitude

Hi Paul,
I did mention in my note that the existence or length of the blue hour depends on the geographical latitude. In the southern countries there is no dusk or dawn.
But I am not sure what is the physical explanation of it.
Did you find it out?
M
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Old 03-09-2021, 10:43 PM
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BTW
the artificial light must be in good balance with the natural light if not the photo is just not pretty. Blue hour in the nature is not exciting as in the well lit city.
Kind regards,
M
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Old 03-09-2021, 10:48 PM
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Nice article here:
https://en.wikipedia.org/wiki/Twilight
But I still don't see the reason for regional differences. I will read it with fresh mind tomorrow
M
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Old 03-09-2021, 10:51 PM
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mkamionka mkamionka is offline
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This figure shows it well:
https://en.wikipedia.org/wiki/Twilig..._world_map.svg

It makes sense:
https://en.wikipedia.org/wiki/Twilig..._of_occurrence
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