SeaMonkey Posted June 22, 2020 Posted June 22, 2020 An informative and enjoyable lecture given at the RI in London. Reminiscent of some of the things we did in High School Chemistryclasses in Iowa back in the 50s. I wonder if these kinds of lectures exist anywhere in America today. If anyone would like to download the video for future reference,plug the video url into the box here and click the Download button. Once the download link appears below the image in a few seconds,right click on it and "Save link target as" to download your copy. Some of the lecture will be rather basic to those who have muchexperience but there may still be some things not yet known. 1
Arthur Posted June 23, 2020 Posted June 23, 2020 More importantly, can anyone find Col Brian Shaw's lecture in a public place? He was ex military and ex Nottingham University. Most of the reactions that couldn't or shouldn't be shown were demonstrated on a large scale. I used to have a USA lecture he did (UCAL??) that never warranted 320 bit because of the original media, but for the things he demo'd it was fine.
Dylman Posted July 11, 2020 Posted July 11, 2020 SeaMonkey, Thanks that was very interesting and so informative. Thanks, Dyl
Arthur Posted July 11, 2020 Posted July 11, 2020 https://www.youtube.com/watch?v=QZoFFRCGZHc From the days of 4:3
SeaMonkey Posted July 12, 2020 Author Posted July 12, 2020 Thanks for the link Arthur! Tech Ingredients has just done this video.
MikeL Posted October 21, 2020 Posted October 21, 2020 The Royal Institution has some great fireworks lectures (like the Chris Bishop lecture linked above. I wish chemistry would have been taught like that when I was a kid. Might've scare the dinosaurs though
tenneyguy Posted June 15, 2021 Posted June 15, 2021 An informative and enjoyable lecture given at the RI in London. Reminiscent of some of the things we did in High School Chemistryclasses in Iowa back in the 50s. I wonder if these kinds of lectures exist anywhere in America today. If anyone would like to download the video for future reference,plug the video url into the box here and click the Download button. Once the download link appears below the image in a few seconds,right click on it and "Save link target as" to download your copy. Some of the lecture will be rather basic to those who have muchexperience but there may still be some things not yet known. I believe an awful lot of valuable teaching effort has disappeared due to P.C., among other things. For example, every high school chemistry classroom had a mercury barometer. Yes, I've seen the images of mercury vapor lingering above the pool. Now, how long do you think it would take for that pool to completely evaporate? The evaporation rate of elemental mercury at room temperature (20 C) is approximately 50 μg/cm2/h (range of 40–60 μg/cm2/h) The US Environmental Protection Agency (EPA) states that 0.045 mcg of mercury per pound (0.1 mcg per kg) of body weight per day is the maximum safe dose of mercury. Thus for a 150 pound individual, about 7 micrograms per day is considered safe.
SharkWhisperer Posted June 15, 2021 Posted June 15, 2021 I believe an awful lot of valuable teaching effort has disappeared due to P.C., among other things. For example, every high school chemistry classroom had a mercury barometer. Yes, I've seen the images of mercury vapor lingering above the pool. Now, how long do you think it would take for that pool to completely evaporate? The evaporation rate of elemental mercury at room temperature (20 C) is approximately 50 μg/cm2/h (range of 40–60 μg/cm2/h) The US Environmental Protection Agency (EPA) states that 0.045 mcg of mercury per pound (0.1 mcg per kg) of body weight per day is the maximum safe dose of mercury. Thus for a 150 pound individual, about 7 micrograms per day is considered safe. Three different notations for microgram over three sentences: "μg", "mcg", and "microgram". That could be confusing if mixed terminology is used when detailing actual comp formulations. Or toxin exposure levels. Especially for newer colleagues. Just sayin' :+} 1
tenneyguy Posted June 15, 2021 Posted June 15, 2021 Three different notations for microgram over three sentences: "μg", "mcg", and "microgram". That could be confusing if mixed terminology is used when detailing actual comp formulations. Or toxin exposure levels. Especially for newer colleagues. Just sayin' :+} Very good point and I apologize for my ineptness. Sometimes I forget that my old memory bank is overwhelmed by a lifetime of technical terminology. Beyond that excuse, I must halt blaming "getting old". I'll be 79 in two week!
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