Module Name: src
Committed By: dholland
Date: Mon Mar 28 00:08:47 UTC 2011
Modified Files:
src/usr.bin/units: units.lib
Log Message:
Update radioactivity-related units from http://physics.nist.gov/cuu/Units/.
The prior definition of sievert was, as far as I can tell, entirely wrong.
Caution: while "gray" and "sievert" have the same dimensionality,
they're not interchangeable -- you need to multiply by a fudge factor
that varies depending on the type of radiation and the tissue it's
affecting. (Dimensional analysis is often not a substitute for knowing
what you're doing.)
It would be nice if units had a way to warn users when they're trying
to do something that doesn't make sense, since there are lots of ways
to do so, but it doesn't, and it wouldn't be easy to arrange in the
general case.
To generate a diff of this commit:
cvs rdiff -u -r1.14 -r1.15 src/usr.bin/units/units.lib
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.bin/units/units.lib
diff -u src/usr.bin/units/units.lib:1.14 src/usr.bin/units/units.lib:1.15
--- src/usr.bin/units/units.lib:1.14 Thu Feb 15 22:37:27 2007
+++ src/usr.bin/units/units.lib Mon Mar 28 00:08:47 2011
@@ -1,4 +1,4 @@
-/ $NetBSD: units.lib,v 1.14 2007/02/15 22:37:27 dogcow Exp $
+/ $NetBSD: units.lib,v 1.15 2011/03/28 00:08:47 dholland Exp $
/ primitive units
@@ -378,6 +378,7 @@
btu britishthermalunit
refrigeration 12000 btu/ton-hour
buck dollar
+Ci curie
cable 720 ft
caliber 1e-2 in
calorie cal
@@ -430,6 +431,7 @@
franklin 3.33564e-10 coul
frigorie kilocal
furlong 220 yd
+Gy gray
galileo 1e-2 m/sec2
gamma 1e-9 weber/m2
gauss 1e-4 weber/m2
@@ -437,6 +439,7 @@
geographicalmile 1852 m
gilbert 7.95775e-1 amp
gill 1|4 pt
+gray joule/kg
gross 144
gunterschain 22 yd
hand 4 in
@@ -518,17 +521,21 @@
quartersection 1|4 mi2
quintal 100 kg
quire 25
+R roentgen
rackunit 1.75 in
rad 100 erg/gm
ream 500
registerton 100 ft3
+rem 1e-2 sievert
rhe 10 m2/nt-sec
-rontgen 2.58e-4 curie/kg
+roentgen 2.58e-4 coulomb/kg
+rontgen roentgen
rood 1.21e+3 yd
rope 20 ft
RU rackunit
rutherford 1e+6 /sec
rydberg 1.36054e+1 ev
+Sv sievert
sabin 1 ft2
sack 3 bu
score 20
@@ -539,6 +546,7 @@
shorthundredweight 100 lb
shortquarter 25 lb
siemens /ohm
+sievert joule/kg
sigma microsec
skein 120 yd
skot 1e-3 apostilb
@@ -627,7 +635,6 @@
frenchfoot 16|15 ft
frenchfeet frenchfoot
toise 6 frenchfeet
-sievert 8.4 rontgen
candle 1.02 candela
militarypace 2.5 feet
metre meter
