PBS LIGHT POLLUTION IN ASTRONOMY
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- เผยแพร่เมื่อ 23 ก.ย. 2012
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All credits go to the PBS - วิทยาศาสตร์และเทคโนโลยี
![Saving the Dark | Documentary | Light Pollution [HD]](http://i.ytimg.com/vi/6fHxNn-FEnc/mqdefault.jpg)
![Saving the Dark | Documentary | Light Pollution [HD]](/img/tr.png)
My fave quote from this documentary is....."Americans are not known for their knowledge." :/
my favorite documentary, ive watched it so many times
I found this video to be both very interesting and informative on a pressing global matter for people from all walks of life. We watched this video in class this week in Astronomy, with my Chemistry and Astronomy teacher. Thanks allot Mr. Cavorley!
If people knew what they are NOT seeing in the night sky they may actually care about it. That is the problem though, they don't know what they are missing and I so wish people did.
I am the 300th thumbs up for this video.
This is from 11 years ago and what has been done about light pollution over those years? Sadly nothing and it's got worse in that time.
:( the death of beauty is nigh
Thanks for this!
The City Dark. (1:23)
More personal kind of documentary rather than scholarly.
Street lights and car headlights are one thing but there is no need to illuminate the sides of buildings and signs on businesses past 10 PM. Douse those lamps!
love it
This still blows my mind
Here's how people can help reduce light pollution: www.darksky.org/get-involved/
You can also find eco-friendly lighting here: www.darksky.org/our-work/lighting/lighting-for-industry/fsa/
There are also basic guides for what lighting is best for
cities and residences, including outdoor lighting: www.darksky.org/our-work/lighting/lighting-for-citizens/lighting-basics/,
as well as a page for just businesses: www.darksky.org/our-work/lighting/residentialbusiness-lighting/.
Here is a page on how to identify if your community has a
lighting ordinance, if it does, how to enforce it, and if it does not, how to
advocate for it: www.darksky.org/our-work/lighting/public-policy/lighting-ordinances/.
Here is a way to deal with light trespass and effects by the
local government: www.darksky.org/our-work/lighting/lighting-for-citizens/bad-streetlights/
Here are some lighting guidelines and info for policymakers:
www.darksky.org/our-work/lighting/public-policy/policy-makers/
And how to help the animals affected: th-cam.com/video/ooLYWwA43SE/w-d-xo.html
Also a very interesting debunking on why increased street
lighting doesn't actually decrease crime: www.darksky.org/light-pollution/lighting-crime-and-safety/
Here's a very interesting page on how much light energy is
being wasted: www.darksky.org/light-pollution/energy-waste/
If you're a super sciency person, there's a database for
scientific research specifically relating to artificial light here: alandb.darksky.org/ There are apps to help combat
overturned circadian rhythms, meaning you can work at night but still not mess
up your circadian rhythm: www.darksky.org/light-pollution/human-health/
Finally, these are places where you can visit near you that
have good light stewardship (meaning you can actually see the sky): www.darksky.org/our-work/conservation/idsp/
If for an absurdly tiny possibility someone from the
government read my comment, this link is how to get certified as a Dark Sky
place: www.darksky.org/our-work/conservation/idsp/become-a-dark-sky-place/
Hi friend, you could include subtitles option on TH-cam to Portuguese?
I really appreciate your attention, thank you and congratulations by video doc!
So informative! I don't like this dude, Edison. He takes a lot of credit for other people's work. Other than that, loved this video! Thank you for posting!
It may be air pollution with light pollution that makes it harder to see stars
Air pollution is hardly a factor in the visibility of the sky. The only time air pollution begins to make a difference is in regions of china and some of europe. The main factor is light pollution in which we would need to remove to see clear skys
Yooo
"Ahh, you think darkness is your ally? You merely adapted the dark. I was born in it, molded by it. I didn't see the light until I was already a man. By then, it was nothing to me but blinding!" -Bane
turn off your lights people
***** lol! apple stores.
***** True. But it always starts with the individual, and we can control our own homes. My neighbors have lights that would be better shut off at night because it the light trespasses into my windows when I'm trying to sleep
Oh, trust me - I do. A big issue is the street lights, and my community leaders aren't all the bright.
True - it's mis-leading that some believe more light = better security ~ It's not necessarily so. Further, one can re-direct the light to where it is needed, while blocking it from entering the atmosphere, and our bedroom windows. So, there's is still light for where light is required. Over lighting and wasted light is often the case
I couldn't agree with you more, Shairaptor. Where I live in Fairfax County, VA the laws have changed to address the issue, but there are private properties, privately owned commercial buildings, condo clusters, town home clusters, and so forth - and all those private entities need to educate themselves and get on board. The county can only do so much. I work with my town home cluster, but the board members are slow on the uptake.
18:35 ....the known Universe......😉
Lol, best comment I ever heard...@4:37... "Americans aren't known for their..... Knowledge.." xD Love it, lol
Would LED lighting produce more visie stars and Milky Way
+Jenny Marie No. LED lighting is more obscene. Only down lighting should be functioning in our cities. Astronomers don't even care for the use of either our lasers or flashlights. None.
The only light that would help you see stars is a skylight.
That's silly. LED light is no different than other light- it's the same exact type of energy being transmitted as a light bulb, just a different means of doing it. Down lighting is just a type of fixture, in which you can use any type of light source.
Not true. Sodium vapor lights that you commonly see (orange streetlights) emit their light in a narrow range of the spectrum of light. That means you can filter it out because it emits light in a different wavelength then signal from galaxies and nebulae. LED lights, however, are white lights, meaning they cover the ENTIRE spectrum and can't be filtered out.
what a load of crap, I live under a non light poluted area and I see the stars and doesn't make a difference. is the same for me even I don't look at them!
Simple. You're not an astronomer so you won't notice the difference...pay a little more attention to the night sky and you'll learn to appreciate it and feel sad when stars get immersed in artificial terrestrial lights.
Here in central Ohio, the light pollution is so bad that you can only see the brightest stars unaided. Forget seeing the Milky Way, it is all washed out. I am 49, grew up in unlit rural Ohio. I miss not seeing nights skies that are all lit up with countless heavenly bodies.
+Samyaza Shemyazaz The only non light polluted areas are in North Korea, in Chile's and other countries' high mountains, the polar caps and only a few fringe areas elsewhere, but no place anywhere near cities, street lights airports or tollways or suburbia or even a farm within two hours of those places. There are over 43,000 objects of interest on my database within my mount's software can find and I can find much more with the aid of the right coordinates. Those are only moderate sums compared to more expensive equipment, retailing at higher prices than automobiles.