Making hydrogen from sunlight – photoelectrochemical reactions. https://interestingengineering.com/science/device-generating-hydrogen-using-sunlight-record
Archive for the ‘Mathematics’ Category:
2023-07-14 Solve The Resistor Cube Problem
Last year I tried redrawing the cube in two dimensions and I could see how the vurrents were splitting but couldn’t solve it. Now here is a simpler solution that doesn’t require a lot of effort with whatever. I built the cube from 1k resistors and measured the value from corner to opposite corner, and
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2022-06-07 Neil deGrasse Tyson Big Numbers
I’m not done with you. Ten to the 23rd power – you met that number in your high school chemistry class. Six point 02 times ten to the 23rd power. That’s a mole in chemistry. Okay? And a mole is
2022-06-06 “Ocean Anoxia”, Future Hothouse Earth
This ocean anoxia is a new hazard. https://www.sciencealert.com/here-s-a-glimpse-at-a-future-hothouse-earth-if-greenhouse-gasses-aren-t-curbed
2021-04-20 Renewables Statistics For World And Australia
Interesting renewables deployment statistics for world, per person per year. https://reneweconomy.com.au/solar-and-wind-are-leading-the-fastest-energy-transition-the-world-has-seen/
2021-03-24 We Don’t Know What We Don’t Know
From a thread about what are the chances of intelligent life on other worlds outside of our solar system. Rick Flemming Why should anyone agree that “…the probability of life on other planets is greater than zero.” There is the thin sliver of the pie chart with *things we know*. The rest of the pie
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2021-03-06 Half Of California Lives Below A Line Through San Fernando Valley
This is interesting. Half of California’s population lives below a line through San Fernando Valley. Which side of the line do you live on? https://www.californiasun.co/stories/the-curiously-lop-sided-population-of-california/
2020-01-13 Slide Rule and Calculator Battery
From FB group Jan 19 Joe Haupt In the ’80s I occasionally did work in an electrical room on campus that had a 7 foot slide rule that had been removed from the classroom. It was there for years, but the fire inspectors would make us keep the junk from accumulating in closets, so it
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