Thoughts on current events, including but not limited to, the computer & automotive industries; British, American, & World politics; Space Exploration; and the military. I don't claim to be an expert on anything, and I'm not receiving any revenue from this blog. Comments are welcomed but I'll delete any I find offensive or any I determine to be off-topic or some form of advertising.
Looks like a mini-Trombe wall
https://practicalsurvivalist.com/diy-solar-air-collector/
"9 rows of 17 soda pop cans, a total of 153 355ml soda cans are used for the collector. The aluminum pop cans are painted with flat black paint to ensure all sunlight is absorbed and not reflected. "
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