colinbm Posted March 1, 2019 Share Posted March 1, 2019 New on YouTube Testing UV absorption eye wear and sun screen with a deuterium light source. Cheers Col Link to comment
JMC Posted March 1, 2019 Share Posted March 1, 2019 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. Link to comment
nfoto Posted March 1, 2019 Share Posted March 1, 2019 The phrase "not scientific" applied to the measurements was mentioned frequently throughout the video ... Link to comment
Cadmium Posted March 1, 2019 Share Posted March 1, 2019 Colin, Thanks! I enjoyed the video. Makes me want all that gear more now. ;) Link to comment
Cadmium Posted March 2, 2019 Share Posted March 2, 2019 You're shake'n it up, Colin! :) You seen that new Kolari EIR filter? ;) Link to comment
colinbm Posted March 2, 2019 Author Share Posted March 2, 2019 Colin, Thanks! I enjoyed the video. Makes me want all that gear more now. ;)Yes Steve, just have to win the Lotto.... Link to comment
colinbm Posted March 2, 2019 Author Share Posted March 2, 2019 You're shake'n it up, Colin! :) You seen that new Kolari EIR filter? ;)Yeah, that looks pretty good. Link to comment
Cadmium Posted March 2, 2019 Share Posted March 2, 2019 Colin, Is that the spectrometer you have? Link to comment
colinbm Posted March 2, 2019 Author Share Posted March 2, 2019 Colin, Is that the spectrometer you have?No, mine is more basic....:-( Link to comment
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