Light pollution..., page 3

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Landscape with human elements

11.6 MEGAPIXEL

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Paesaggi con Elementi Umani/1 View gallery (23 photos)

Light pollution... sent on June 02, 2019 (22:57) by Rodema. 60 comments, 1296 views.

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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Rodema

sent on June 05, 2019 (23:39) | This comment has been automatically translated (show/hide original)

Thu & Da... Always very kind, thank you so much for having appreciated, goodnight and to-morrow!!
Hello, Rod ;-)

user62049

sent on June 06, 2019 (0:05) | This comment has been automatically translated (show/hide original)

A topical theme, perhaps even poorly treated unfortunately, your click document makes you think a lot and it would be to make turn also to our dear politicians
A greeting mark ;-)

Rodema

sent on June 06, 2019 (0:23) | This comment has been automatically translated (show/hide original)

Marco... I was pleased to receive also your very welcome approval about the seriousness of the problem, politicians do the deaf, think only the armchairs! ... Thank you very much!!
Hello, Rod ;-)

Alessandro Morini

sent on June 06, 2019 (17:08) | This comment has been automatically translated (show/hide original)

A very nice job your and how much light.
maybe too much.....
agree fully with your excellent review.
A greeting Alessandro

Rodema

sent on June 06, 2019 (22:14) | This comment has been automatically translated (show/hide original)

Alessandro.. Thank you very much for leaving your very welcome appreciation.
Hello Rod ;-)

Giovanni e Davide

sent on June 06, 2019 (22:23) | This comment has been automatically translated (show/hide original)

Hello Rod, you did a great job in the caption, very sorry about all that and do not know how we will come out, hopefully well are the only words that I remain
caption and very significant image, as good as ever
Hello, happy evening :-) :-)

Rodema

sent on June 07, 2019 (0:14) | This comment has been automatically translated (show/hide original)

Thu & Da... I was very pleased to receive also your very welcome appreciation, heartfelt thanks!
A dear greeting, Rod ;-)

user169128

sent on June 07, 2019 (12:31) | This comment has been automatically translated (show/hide original)

Sky without stars and "artificial" nights. The consequences will be irreparable if we do not block or reduce the problem. I am very pleased to see that you have touched a serious and important subject. Bravo Rod. It is right to raise awareness.
Beautiful shot.
A dear greeting
Cinzia

Rodema

sent on June 07, 2019 (22:24) | This comment has been automatically translated (show/hide original)

Cinzia... QUOTAS Sky without stars and "artificial" nights „ ... There are many problems that we talk about little and unfortunately I think that you will never find the conditions to reverse the sense of travel, but at least let's try... QUOTAS It is right to raise all „ ... Heartfelt thanks for having appreciated and approved.
A dear greeting, Rod ;-)

Franco Buffalmano

sent on June 09, 2019 (10:02) | This comment has been automatically translated (show/hide original)

Bravo Rod! Interesting discussion, you're right! The "civilization" on one side gives you and the other is resumed. :-/ :-P Good Sunday!
FB

Werner

sent on June 09, 2019 (15:27) | This comment has been translated

Great shot!

Rodema

sent on June 09, 2019 (15:52) | This comment has been automatically translated (show/hide original)

@ Franco
@ Werner
... I was very pleased to receive even your very welcome appreciation, thank you very much!
A dear greeting, Rod ;-)

Mauro Monesi

sent on June 10, 2019 (10:16) | This comment has been automatically translated (show/hide original)

Excellent image document
Congratulations Rodema
A greeting
Mauro ;-) :-P

Rodema

sent on June 10, 2019 (10:22) | This comment has been automatically translated (show/hide original)

Mauro.. Thank you very much for leaving your very welcome appreciation.
A dear greeting, Rod ;-)

Roby Photo

sent on June 22, 2019 (12:07) | This comment has been automatically translated (show/hide original)

You've combined photography and commentary by bringing it up in a sublime way and I don't say it as much as to say.
Congratulations.

Rodema

sent on June 22, 2019 (17:10) | This comment has been automatically translated (show/hide original)

Roby, thank you very much for the welcome comment and for the always welcome compliments.
A dear Rod greeting ;-)

Alcenero

sent on June 29, 2019 (16:03) | This comment has been automatically translated (show/hide original)

Fantastic document Rod, as always I find myself in tune with what you wrote in the caption, now you want the night to be as bright as the day.
Many compliments for the beautiful image
A greeting
Pierpaolo

Rodema

sent on June 30, 2019 (17:56) | This comment has been automatically translated (show/hide original)

Pier... I was very pleased to receive your very welcome appreciation, thank you very much!!
A dear Rod greeting ;-)

Giancarlo65

sent on February 25, 2020 (14:45) | This comment has been automatically translated (show/hide original)

congratulations for this shot, you touched on a very interesting and underrated theme, instead it is of enormous importance, document shot, you have to raise awareness, well realized and beautiful composition
hello Giancarlo ;-)

Rodema

sent on February 26, 2020 (16:13) | This comment has been automatically translated (show/hide original)

Giancarlo ...

“ you touched on a very interesting and underrated topic, instead it is of enormous importance „

... in fact, very little is said about it. Thank you very much for leaving your very welcome comment.
Hello, Rod ;-)

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