I knew about radioactive fallout from atomic bomb tests, but I didn’t know that it damaged Kodak film. What’s very dismaying is that the US government warned Kodak but they didn’t warn people about the dangerous fallout. Tens of thousands of thyroid cancers caused by radioactive iodine. Strontium in our bones causing cancer. That’s shameful.
(Read More…)
This YouTube video is about self driving but it shows and tells how the sensors do their jobs. LIDAR is too expensive. https://youtu.be/P8aTDusU7dw **************************** This YouTube video is about Nikola and its business model and about costs of hydrogen vs. batteries. Good. https://youtu.be/7ynupYBLlyA
It said they could trace 800 deaths to false CoVID19 information on Facebook https://amp.theguardian.com/technology/2020/aug/19/facebook-funnelling-readers-towards-covid-misinformation-study
An article on CBS Sunday Morning, 2020 Aug 16, by Ted Koppel These PEADs were classified documents during the Cold War. Ted Koppel asked Prof. John Yoo, who worked at the Dept. Of Justice, about them and Yoo said he wasn’t allowed to say(!) These proclamations allow the president to declare an emergency, suspend constitutional
(Read More…)
Microsoft Data Center test runs on hydrogen for 48 hours. See? Hydrogen is going to be an important part of the future of renewables. https://www.popularmechanics.com/science/amp33499249/microsoft-hydrogen-generator-test/
From the comment I left at Dave’s JHAT YouTube video https://youtu.be/yofGtxEgpI8 Thank you, Dave, for the balanced and informative view. But I must bring up the “externalities” that almost every nuclear power proponent fails to address. One of the reasons why the burning of fossil fuels, especially coal, has to end is that the mining,
(Read More…)
From Ars Technica article https://arstechnica.com/science/2020/06/just-10-20-of-covid-19-cases-behind-80-of-transmission-studies-suggest/ Quote “Cowling noted that Japan—which has been relatively successful at managing the pandemic—has employed an anti-superspreading policy called the three Cs: Avoid (1) Closed spaces with poor ventilation, (2) Crowded places, and (3) Close-contact settings, such as close-range conversations. The risk for superspreading is highest in situations with all three
(Read More…)
From FB comment Monty Ross It’s true that optocouplers are used for isolation. But I have seen whole sections of PC boards with a hole burned where the optocouplers used to be. It is incredible how much damage the power lines do to the PC boards due to high voltage spikes in the power. Transformers
(Read More…)
Clive tests three UV-C germicidal lamps to see if they are really putting out UV-C sterilizing light in this 3 minute video. He uses the green banana test. It’s obvious how the cheap LED lights don’t put out any germicidal UV-C. The UV-C wavelengths are blocked by regular window glass or the clear epoxy used
(Read More…)
From (my comments at the end) https://electrek.co/2020/04/16/egeb-scientists-nrdc-court-win-epa/ The Electrek Green Energy Brief (EGEB): A daily technical, financial, and political review/analysis of important green energy news. Quote Science wins Yesterday, a federal judge in New York invalidated an October 2017 Environmental Protection Agency (EPA) directive from former EPA head Scott Pruitt. That directive led to the
(Read More…)
