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New on YouTube, Testing UV absorption eyewear and sunscreen with a deuterium light source

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#1 colinbm

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Posted 01 March 2019 - 10:28

New on YouTube
Testing UV absorption eye wear and sun screen with a deuterium light source.
https://www.youtube....h?v=vwsHRrDYu5o


Cheers

Col



#2 nfoto

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Posted 01 March 2019 - 11:21

Thanks. A nice video example.

#3 JMC

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Posted 01 March 2019 - 11:33

Thanks for sharing. The discussion about sunscreens and the issues with sun exposure made my skin crawl though. "SPF is of course a marketing tool", is not something that the general public should be hearing from any credible scientist. And talking about % absorption through his work, in relation to the relative SPF scores, was completely misleading to the general public and the method he used certainly was not the way SPF scores are calculated. Also insinuating that UVA is not what you have to worry about with sun exposure, it's just the UVB, again wrong and very misleading. No mention of the stray light effects on CCD spectrometers for the OD measurements either. Not good.

#4 nfoto

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Posted 01 March 2019 - 12:21

The phrase "not scientific" applied to the measurements was mentioned frequently throughout the video ...

#5 Cadmium

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Posted 01 March 2019 - 19:07

Colin, Thanks! I enjoyed the video. Makes me want all that gear more now. ;)

#6 Cadmium

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Posted 02 March 2019 - 01:08

You're shake'n it up, Colin! :) You seen that new Kolari EIR filter? ;)

#7 colinbm

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Posted 02 March 2019 - 01:15

View PostCadmium, on 01 March 2019 - 19:07, said:

Colin, Thanks! I enjoyed the video. Makes me want all that gear more now. ;)
Yes Steve, just have to win the Lotto....

#8 colinbm

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Posted 02 March 2019 - 01:26

View PostCadmium, on 02 March 2019 - 01:08, said:

You're shake'n it up, Colin! :) You seen that new Kolari EIR filter? ;)
Yeah, that looks pretty good.

#9 Cadmium

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Posted 02 March 2019 - 08:14

Colin, Is that the spectrometer you have?

#10 colinbm

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Posted 02 March 2019 - 12:48

View PostCadmium, on 02 March 2019 - 08:14, said:

Colin, Is that the spectrometer you have?
No, mine is more basic....:-(