Message-ID:

Real computer scientists like having a computer on their desk, else how could they read their mail?

tech / sci.astro.amateur / Re: HPS to LED, brighter sky.

Re: HPS to LED, brighter sky.

<26e43f8a-3ed1-4dca-b853-9e46b92657b6n@googlegroups.com>

https://www.novabbs.com/tech/article-flat.php?id=8594&group=sci.astro.amateur#8594

copy link Newsgroups: sci.astro.amateur

X-Received: by 2002:a05:622a:11ca:b0:342:e8bb:ecca with SMTP id n10-20020a05622a11ca00b00342e8bbeccamr7580388qtk.11.1659869315759;
Sun, 07 Aug 2022 03:48:35 -0700 (PDT)
X-Received: by 2002:a25:db94:0:b0:676:d3bf:7cbd with SMTP id
g142-20020a25db94000000b00676d3bf7cbdmr11762697ybf.590.1659869315444; Sun, 07
Aug 2022 03:48:35 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder8.news.weretis.net!proxad.net!feeder1-2.proxad.net!209.85.160.216.MISMATCH!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.astro.amateur
Date: Sun, 7 Aug 2022 03:48:35 -0700 (PDT)
In-Reply-To: <415ffc0c-4918-4349-a829-9a2bef6aa3d0n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=2600:1700:c670:be20:4ce0:aa7:3b07:3970;
posting-account=tS_DdwkAAABh2_lUXXZvPfbiutm4lA38
NNTP-Posting-Host: 2600:1700:c670:be20:4ce0:aa7:3b07:3970
References: <415ffc0c-4918-4349-a829-9a2bef6aa3d0n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <26e43f8a-3ed1-4dca-b853-9e46b92657b6n@googlegroups.com>
Subject: Re: HPS to LED, brighter sky.
From: wsnel...@hotmail.com (W)
Injection-Date: Sun, 07 Aug 2022 10:48:35 +0000
Content-Type: text/plain; charset="UTF-8"

by: W - Sun, 7 Aug 2022 10:48 UTC

On Wednesday, August 3, 2022 at 8:30:33 AM UTC-4, W wrote:
> https://www.sciencedirect.com/science/article/pii/S0301479721008380
>
> Think about why the sky looks blue in the daytime.

To bring this thread back on topic:

We have strong evidence that LED streetlights will make light pollution worse in most areas where they are installed.

We also can observe a proliferation of LEDs on private property due to the lower costs of powering and maintaining them.

In both cases, the hyped-up features that are supposed to make LEDs less of a nuisance will rarely be used. The cheapest and easiest policy for those who want more light is to simply leave the LEDs on all night.

Add to this the broadband, and therefore unfilterable, spectrum with its scattered blue light and we can conclude that light pollution is about to grow far worse, almost everywhere.