61 reputation
217
bio website math.stackexchange.com/users/…
location Champaign, IL
age 37
visits member for 4 years, 6 months
seen yesterday

Amateur mathematician, professional software engineer. Interested in all kinds of math, becoming a better mathematician, and helping others do the same.

email: jdb1729 (at) gmail.com

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Mar
25
revised Iodine-131 half-life and reality
more readable sentence
Mar
25
revised Iodine-131 half-life and reality
fix link
Mar
25
revised Iodine-131 half-life and reality
typo
Mar
25
revised Iodine-131 half-life and reality
remove "any"
Mar
25
revised Iodine-131 half-life and reality
explain risk
Mar
24
comment Iodine-131 half-life and reality
Yes, but Xenon has no biological role and I don't know in what amounts it is ordinarily present in e.g. the thyroid or bone. The point is that the tiny amounts produced by the decay of Iodine 131 would be harmless. If the amounts of Xenon were large enough to be harmful, a person would already be dead from the radiation. For what it's worth, I found this page home.earthlink.net/~sweetwind7/thyca/thyca.html with a similar explanation. It claims that the same would be true even in a fantasy universe where Iodine 131 decays to Arsenic.
Mar
24
revised Iodine-131 half-life and reality
simplify
Mar
24
revised Iodine-131 half-life and reality
typo
Mar
24
revised Iodine-131 half-life and reality
explain risk; deleted 2 characters in body
Mar
24
answered Iodine-131 half-life and reality
Mar
23
awarded  Benefactor
Mar
23
revised Do Alkaline batteries, $\mathrm{NiMH}$, rechargeable alkaline, Lithium $\mathrm{AA}$, all have similar MAX POWER?
link internal resistance, correct spelling, remove unnecessary mathcode
Mar
23
revised Do Alkaline batteries, $\mathrm{NiMH}$, rechargeable alkaline, Lithium $\mathrm{AA}$, all have similar MAX POWER?
fix name
Mar
23
revised Do Alkaline batteries, $\mathrm{NiMH}$, rechargeable alkaline, Lithium $\mathrm{AA}$, all have similar MAX POWER?
conclude better
Mar
23
revised Do Alkaline batteries, $\mathrm{NiMH}$, rechargeable alkaline, Lithium $\mathrm{AA}$, all have similar MAX POWER?
wiimote
Mar
22
revised Can a car get better mileage driving over hills?
fix punctuation
Mar
22
comment Can a car get better mileage driving over hills?
Lawrence, the flat road must be curved because it has the same length as the hilly road and connects the same endpoints. Neither road is straight.
Mar
22
revised Do Alkaline batteries, $\mathrm{NiMH}$, rechargeable alkaline, Lithium $\mathrm{AA}$, all have similar MAX POWER?
pretty math
Mar
22
awarded  Teacher
Mar
22
answered Do Alkaline batteries, $\mathrm{NiMH}$, rechargeable alkaline, Lithium $\mathrm{AA}$, all have similar MAX POWER?