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#1
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
http://money.cnn.com/2017/08/13/news...nds/index.html
Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. |
#2
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On Mon, 14 Aug 2017 08:56:03 -0700 (PDT), RichA
wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. Welcome to the world of unregulated capitalism! |
#3
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On Monday, 14 August 2017 13:13:43 UTC-4, Chris L Peterson wrote:
On Mon, 14 Aug 2017 08:56:03 -0700 (PDT), RichA wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. Welcome to the world of unregulated capitalism! Except they all (except for the application-specific Baader) no doubt came from CHINA where myriad dangerous products have originated. |
#4
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On Mon, 14 Aug 2017 15:18:25 -0700 (PDT), RichA
wrote: On Monday, 14 August 2017 13:13:43 UTC-4, Chris L Peterson wrote: On Mon, 14 Aug 2017 08:56:03 -0700 (PDT), RichA wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. Welcome to the world of unregulated capitalism! Except they all (except for the application-specific Baader) no doubt came from CHINA where myriad dangerous products have originated. China is the most unregulated, most capitalistic nation on Earth. |
#5
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On Monday, August 14, 2017 at 8:56:06 AM UTC-7, RichA wrote:
http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. LOL! I remember back in the old days, use to hold a piece of glass over a candle to cover it with soot than use it to view the eclipse. After 40 years, I still have 20/20 vision! |
#6
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
StarDust wrote:
On Monday, August 14, 2017 at 8:56:06 AM UTC-7, RichA wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. LOL! I remember back in the old days, use to hold a piece of glass over a candle to cover it with soot than use it to view the eclipse. After 40 years, I still have 20/20 vision! For the first solar eclipse I can remember my teacher gave every pupil a piece of blotting paper with a needle hole in it. We watched the eclipse through the hole. For the next eclipse the teacher (not the same one) gave us all folded black and white film negatives. |
#7
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On Tuesday, August 15, 2017 at 9:41:43 AM UTC-7, Mike Collins wrote:
StarDust On Monday, August 14, 2017 at 8:56:06 AM UTC-7, RichA wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. LOL! I remember back in the old days, use to hold a piece of glass over a candle to cover it with soot than use it to view the eclipse. After 40 years, I still have 20/20 vision! For the first solar eclipse I can remember my teacher gave every pupil a piece of blotting paper with a needle hole in it. We watched the eclipse through the hole. For the next eclipse the teacher (not the same one) gave us all folded black and white film negatives. I bet , was not certified by OSA, CE, government and CIA and still worked? (o: |
#8
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On Tuesday, 15 August 2017 12:41:43 UTC-4, Mike Collins wrote:
StarDust wrote: On Monday, August 14, 2017 at 8:56:06 AM UTC-7, RichA wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. LOL! I remember back in the old days, use to hold a piece of glass over a candle to cover it with soot than use it to view the eclipse. After 40 years, I still have 20/20 vision! For the first solar eclipse I can remember my teacher gave every pupil a piece of blotting paper with a needle hole in it. We watched the eclipse through the hole. For the next eclipse the teacher (not the same one) gave us all folded black and white film negatives. Fully exposed (blackened) black and white (as opposed to colour) film negatives are a safe viewing device, apparently. No, chromogenic black and white aren't suitable. |
#9
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On 16/08/2017 04:29, RichA wrote:
On Tuesday, 15 August 2017 12:41:43 UTC-4, Mike Collins wrote: StarDust wrote: On Monday, August 14, 2017 at 8:56:06 AM UTC-7, RichA wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. LOL! I remember back in the old days, use to hold a piece of glass over a candle to cover it with soot than use it to view the eclipse. After 40 years, I still have 20/20 vision! For the first solar eclipse I can remember my teacher gave every pupil a piece of blotting paper with a needle hole in it. We watched the eclipse through the hole. For the next eclipse the teacher (not the same one) gave us all folded black and white film negatives. Fully exposed (blackened) black and white (as opposed to colour) film negatives are a safe viewing device, apparently. No, chromogenic black and white aren't suitable. Unexposed slide film is particularly dangerous as it can lower the visible light to an almost comfortable level but lets through dangerous amounts of near infra red. If you ever have a strip of the stuff it is interesting to look through it at the natural world around you. When the eye has dark adapted sufficiently after a minute or two the colour vision slowly returns but with additional sensitivity in the near IR. There are no pain receptors in the back of the eye so it doesn't hurt at the time - only ~6 hours later. Crescent shaped eclipse retinal burns. -- Regards, Martin Brown |
#10
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Amazon (and Ebay?) flooded with unsafe eclipse viewers?
On Tuesday, August 15, 2017 at 8:29:07 PM UTC-7, RichA wrote:
On Tuesday, 15 August 2017 12:41:43 UTC-4, Mike Collins wrote: On Monday, August 14, 2017 at 8:56:06 AM UTC-7, RichA wrote: http://money.cnn.com/2017/08/13/news...nds/index.html Note it appears the black polymer Baader film might not be suitable for eyes-only eclipse viewing too. LOL! I remember back in the old days, use to hold a piece of glass over a candle to cover it with soot than use it to view the eclipse. After 40 years, I still have 20/20 vision! For the first solar eclipse I can remember my teacher gave every pupil a piece of blotting paper with a needle hole in it. We watched the eclipse through the hole. For the next eclipse the teacher (not the same one) gave us all folded black and white film negatives. Fully exposed (blackened) black and white (as opposed to colour) film negatives are a safe viewing device, apparently. No, chromogenic black and white aren't suitable. But, what can you see with it? Use to have a small welding mask, used that once or twice for eclipse viewing, it was pretty good. |
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