This is a note for Future John. Today I got two new RM12-9HR REMCO VRLA Batteries for each of two PowerShield Defender 1600VA UPS systems. The RM12-9HR batteries are 8.5 Ah 12 V batteries I paid AU$65 each for four of them.
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Silly Job Title: Maker of Videos. I am the Maker of Videos!
In this video we continue working through Learning the Art of Electronics. There is no prac today, today we cover some material about decibels (subscriber-only content).
In today’s video I mention about my mate Jason Jacques who is a fellow YouTuber. Also thanks to my mate Chris from Learning as a hobby for telling me about Desmos.
Over on Wikipedia you can find out more about Decibels and Alexander Graham Bell.
The book I recommend is: Logarithms and Exponentials Essential Skills Practice Workbook with Answers (Improve Your Math Fluency).
I included a plot of the logarithm from Desmos: Desmos Logarithm Plot.
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Yum Cha 300pcs Heat Shrink Wire Connectors |
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Today installed my replacement UPERFECT 4K Portable Monitor 15.6” UHD IPS 3840×2160 USB C Monitor HDR FreeSync from UPERFECT. This is a small form factor 4K display which I use as the third 4k monitor on my primary workstation. I use it for displaying notes and reference material, mainly this:
Today I learned about Gabriel’s horn, a solid of revolution with infinite surface area and finite volume.
Good news, everyone!
Note: to enable this feature in the client the hosted page needs to allow it with something like this:
<meta name=”responsive-embedded-sizing” content=”allow-origins=https://example.com”>
I watched this great movie Perfect Days recently and learned about the Japanese word “komorebi”, it refers to sunlight filtering through the leaves of trees, creating shifting patterns of light and shadow, unique and beautiful in the moment.