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  1. Galleries
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  4. » Light pollution...

 
Light pollution......

Paesaggi con Elementi Umani/1

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Light pollution... sent on June 02, 2019 (22:57) by Rodema. 60 comments, 1297 views. [retina]

f/1.6, ISO 2000, hand held.

L'inquinamento luminoso è un'alterazione dei livelli di luce naturalmente presenti nell'ambiente notturno. Questa alterazione provoca danni di diversa natura: ambientali, scientifici, culturali ed economici. La definizione legislativa più utilizzata (vedi sotto) lo qualifica come "ogni irradiazione di luce diretta al di fuori delle aree a cui essa è funzionalmente dedicata, ed in particolare verso la volta celeste". Ogni anno si celebra una giornata di riflessione su questo problema mondiale, la prima delle quali si è celebrata il 28 febbraio 1991. Tra i danni ambientali si possono elencare: difficoltà o perdita di orientamento in diverse specie animali (uccellimigratori, tartarughe marine, falene notturne , chirotteri), alterazione del fotoperiodo in alcune piante, alterazione dei ritmi circadiani nelle piante, animali ed uomo (ad esempio la produzione della melatonina viene bloccata già con bassissimi livelli di luce). Recentemente (2001) è stato scoperto un nuovo fotorecettore che non contribuisce al meccanismo della visione, ma regola il nostro orologio biologico. Il picco di sensibilità di questo sensore è nella parte blu dello spettro visibile. Per questo le lampade con una forte componente di questo colore (come i LED) sono quelle che possono alterare maggiormente i nostri ritmi circadiani. Le lampade che fanno meno danno da questo punto di vista sono quelle al sodio ad alta pressione e, ancora meno dannose, quelle a bassa pressione. Il danno culturale principale è dovuto alla sparizione del cielo stellato dai paesi più inquinati, cielo stellato che è stato da sempre fonte di ispirazione per la religione, la filosofia, la scienza e la cultura in genere. Fra le scienze più danneggiate dalla sparizione del cielo stellato vi è senza dubbio l'astronomia sia amatoriale che professionale; un cielo troppo luminoso infatti limita fortemente l'efficienza dei telescopi ottici che devono sempre più spesso essere posizionati lontano da questa forma di inquinamento. Il danno economico è dovuto principalmente allo spreco di energia elettrica impiegata per illuminare inutilmente zone che non andrebbero illuminate, come la volta celeste, le facciate degli edifici privati, i prati e i campi a lato delle strade o al centro delle rotatorie. Anche per questo motivo uno dei temi trainanti della lotta all'inquinamento luminoso è quello del risparmio energetico. La spesa energetica annua per illuminare l'ambiente notturno è dell'ordine del miliardo di euro, non contando le spese di manutenzione degli apparecchi, sostituzione delle lampade, installazione di nuovi impianti. – (Fonte Wiki) --- Sul fondo possiamo vedere Genova e le sue mille luci, ripresa dalla Riviera di Ponente. --- ps: la panoramica è composta dall'unione di tre scatti orizzontali. --- (Rod)



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avatarsupporter
sent on June 04, 2019 (0:31) | This comment has been automatically translated (show/hide original)

Nice shot Rocco, great and interesting caption, congratulations :-) :-)
Hello, Catherine

avatarsenior
sent on June 04, 2019 (7:42) | This comment has been automatically translated (show/hide original)

Marisa... Unfortunately it is exactly as you say, we are going to the self destruction and the Great powers in the first, continue undashing to press on the accelerator, it is bleak to think that their children and grandchildren want to leave only more billions and not a better planet.
Thank you very much for having appreciated.
A dear greeting Rod ;-)

avatarsenior
sent on June 04, 2019 (7:47) | This comment has been automatically translated (show/hide original)

Caterina... I find it right to document and do in our small, the best to try not to worsen the already serious situation, I was very pleased to receive also your very welcome appreciation.
A dear greeting Rod ;-)

avatarsenior
sent on June 04, 2019 (8:31) | This comment has been automatically translated (show/hide original)

Sadly real considerations. As with many (too many) other situations, the due controls are only theoretical... Once it was said "Scripta manent"... It doesn't seem to be more fashionable. Congratulations on everything. A greeting

avatarsenior
sent on June 04, 2019 (10:38) | This comment has been automatically translated (show/hide original)

Errekappa... Thank you very much for the passage and for having left your very welcome appreciation.
Hello, Rod ;-)

avatarsupporter
sent on June 04, 2019 (11:46) | This comment has been automatically translated (show/hide original)

Instructive caption, excellent photo, congratulations Rod!
Hello, Giorgio

avatarsupporter
sent on June 04, 2019 (12:53) | This comment has been automatically translated (show/hide original)

Congratulations Rod,
Beautiful image document and beautiful caption.
Hello, Paul

avatarsenior
sent on June 04, 2019 (18:08) | This comment has been automatically translated (show/hide original)

Beautiful and exhaustive illustration, both photographic and caption, this problem that I thought was annoying only for the fact that does not let me see the stars as I saw them as a child, (I lived on Mount May) instead, reading your caption, I Account that the damages are manifold and also very serious.
in the continuous pursuit of comfort and alleged well-being, man is destroying the environment and himself with his own hands :-/
Congratulations on the shareable document ROD.
Hello, Renzo

avatarsupporter
sent on June 04, 2019 (19:44) | This comment has been automatically translated (show/hide original)

I share the "friend Emme....... poor nature.........
Hello Raymond

avatarsupporter
sent on June 04, 2019 (19:54) | This comment has been automatically translated (show/hide original)

Beautiful Nocturnal Rod. Hello Conrad

avatarsenior
sent on June 04, 2019 (20:36) | This comment has been automatically translated (show/hide original)

My God, that reddish dome is impressive in the darkness of the night. Theme of which you do not talk enough, you did well to publish this shot. Greetings!

avatarsenior
sent on June 04, 2019 (21:20) | This comment has been automatically translated (show/hide original)

@ Giorgio
@ Paolo
@ Renzo
@ Raimondo
@ Corrado
@ Giammarco
... I was delighted that you enjoyed the shot, but above all that you have also demonstrated your sensitivity to the serious phenomenon little debated but very extensive and not easy solution, most likely also due to the fact that if you talk about it Very little. Thank you so much for leaving your very welcome comment.
A dear greeting, Rod ;-)

avatarsupporter
sent on June 04, 2019 (23:20) | This comment has been automatically translated (show/hide original)

Bravo, Rod, to raise the problem: We are very enlightened (with a waste of energy), but poorly lit... In the brain that does not think about the consequences of light pollution.
Night
Nadia

avatarsenior
sent on June 05, 2019 (0:52) | This comment has been automatically translated (show/hide original)

I often wonder.... But do we really need all this waste?
would be nice if you could stop at night.
Thanks Rod! ;-)

user154662
avatar
sent on June 05, 2019 (1:17) | This comment has been automatically translated (show/hide original)

Very nice Rod,
good night
Barza ;-)

avatarsupporter
sent on June 05, 2019 (7:25) | This comment has been automatically translated (show/hide original)

Nice shot great caption..... :-)

avatarsenior
sent on June 05, 2019 (19:05) | This comment has been automatically translated (show/hide original)

@ Nadia
@ Roberto
@ Barza
@ Jerry
... It's always a pleasure to receive your very welcome comments, thank you so much for appreciative.
A dear greeting Rod ;-)

avatarsenior
sent on June 05, 2019 (23:17) | This comment has been automatically translated (show/hide original)

Shot that is the opener to problems certainly little debated but equally important for our planet :-/ Beautiful Job Dearest Rod :-P Hello Rosario ;-)

avatarsenior
sent on June 05, 2019 (23:24) | This comment has been automatically translated (show/hide original)

Rosario... I was very pleased to receive also your opinion and the always very welcome appreciation... Thank you very much!!
A dear greeting, Rod ;-)

avatarsenior
sent on June 05, 2019 (23:35) | This comment has been automatically translated (show/hide original)

Step tomorrow to read the caption, very good, you handled very well the light
Hello, good night :-) :-)




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