Choose from the ten most recent posts below, or click the links further down to show all posts for a topic.
Post #G21-018: Radiant barrier for keeping a raised bed warm at night, final post.
By chogan@directresearch.com
/ April 23, 2021
I've been looking into simple ways to keep to keep a raised garden bed warm at night. So far,...
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Post #1119: COVID-19 trends, update to 4/22/2021.
By chogan@directresearch.com
/ April 23, 2021
Looks like the U.S. fourth wave is fizzling out. You may have noticed that the news media are no longer...
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Post #1117: William and Mary, another good day, the math of herd immunity.
By chogan@directresearch.com
/ April 22, 2021
Today's test results were 1-for-1772. Three days of census testing are highlighted in yellow below. In short, they've tested three-quarters...
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Post #1116: Town of Vienna, a small lesson from WHOIS, edited.
By chogan@directresearch.com
/ April 22, 2021
Edit: I've taken this down, because it offended one of the candidates for Town Council. My only point is that...
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Post #1115: William and Mary, zero cases in a further 1599 tests? Sure looks like herd immunity.
By chogan@directresearch.com
/ April 21, 2021
Edit: Oh, no. My wife tells me this is prompting calls to ease up on the COVID-19 hygiene at William...
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Post #1114: COVID-19 update to 4/20/2021.
By chogan@directresearch.com
/ April 21, 2021
Not much to say. Nationally, the rate of daily new cases still appears to befalling, a bit. Michigan and...
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Post #1113: William and Mary, zero cases in 1400+ tests. Herd immunity?
By chogan@directresearch.com
/ April 21, 2021
William and Mary has started another round of "census" testing, administering COVID-19 tests to all students on the campus. Yesterday,...
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Post #G21-017: Warming a raised bed at night 3: passive solar helps.
By chogan@directresearch.com
/ April 20, 2021
This is a continuation of a series of posts on how to keep the surface of raised beds warm during...
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Post G21-015: The math behind the space blanket
By chogan@directresearch.com
/ April 19, 2021
Background. Fair warning: This is a technical post. It wanders off into a discussion of heat content, conduction, radiation,...
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Post #1112: COVID-19 trends to 4/18/2021
By chogan@directresearch.com
/ April 19, 2021
Is this the peak of the U.S. fourth wave? Below is the U.S. and regional graph, in logs. There really...
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