February 1st, 2015
I was sent a link to a blog post, “This Mama Isn’t Scared of the Shmeasle Measles” by Megan Heimer.
I’ll run through the post in a minute, it contains a whole lot of nonsense. First, some links to reliable info:
CDC measles info
CDC Manual for Surveillance of VPD: Chapter 7: Measles
Measles week posts by an immunologist
Now, on to the post…
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Posted in pseudoscience, Science | No Comments »
November 21st, 2014
I bought a Sunbeam heating pad. It has low/med/high settings, and turns off after two hours.

The back of the controller says ‘Sunbeam SLA103’.
I wanted to eliminate the shutoff, I’m using it to heat my fermentation bucket.
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Posted in hobbies, howto | 16 Comments »
August 25th, 2014
Hybrid balloon / vehicle approaches
Saw a recent news item about JP Aerospace. They are working on a two step to orbit approach. The basic plan is to put a large lighter than air (LTA) craft at 200,000 ft, and then accelerate it using a ion thruster to reach orbital velocity.
So I was interested in how this would work, and what the basic parameters (mass, thrust, time) are for approaches of this type.
The benefit of starting from a high altitude is very low air pressure. A balloon can provide steady support so a low thrust vehicle has time to accelerate.
Orbital velocity is roughly 9500 m/s.
What size solid fuel rocket would be required to put a 10 kb payload into orbit?
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August 24th, 2014
Bit of local history I never knew about. I had noticed, but no one ever mentioned the court case…
“But the fight didn’t end there; it just moved to the courts and the states. The 1970s saw a tidal wave of high-profile civil rights lawsuits taking aim at restrictive zoning laws, virtually all of which were lost. Most crucially, in 1977 the Supreme Court upheld a law that banned apartment buildings in the Chicago suburb of Arlington Heights, denying an affordable housing developer’s claim that the law made integration almost impossible. (At the time, Arlington Heights had about 27 black residents out of a population of 64,000. In the nearly four decades since, its zoning has largely remained intact, and its black population is still under 1,000.)”
One of the best ways to fight inequality in cities: zoning By Daniel Hertz
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August 22nd, 2014
OK, this is quite annoying. It was plenty annoying when I was at a univerisity and 90% of the articles were available at publication, but that 10% always included a handful of important articles so it has always been a PITA. So now I’ll start future blogging!
I’ll tag interesting articles when they get published and follow up when I can actually read them. Many journals now are open access, but some release an article six months or a year after publication. Or sometimes the pdf gets posted. So I’ll tag intertesting articles when they hit the news and write a follow up when I can read them. Because titles and abstracts aren’t enough for articles with useful information!
Duration of urination does not change with body size. Patricia J. Yanga, Jonathan Phama, Jerome Chooa, and David L. Hu. PNAS vol. 111 no. 33p11932–11937.
BTW, PNAS used to release articles at publication. When did they go dark?!
Posted in Sci general, Science | No Comments »