International
Tables for
Crystallography
Volume C
Mathematical, physical and chemical tables
Edited by E. Prince

© International Union of Crystallography 2006
International Tables for Crystallography (2006). Vol. C. ch. 10.1, p. 958

Table 10.1.1 

D. C. Creagha and S. Martinez-Carrerab

a Division of Health, Design, and Science, University of Canberra, Canberra, ACT 2601, Australia, and bSan Ernesto, 6-Esc. 3, 28002 Madrid, Spain

Table 10.1.1 | top | pdf |
The relationship between SI and the earlier system of units

Quantity SI Earlier
Absorbed dose
 [gray (Gy = J kg−1)] 		1 J kg−1
0.01 J kg−1 		100 rad
1 rad
Activity [becquerel
 (Bq = s−1)] 		1 Bq
3.7 × 1010 Bq 		2.7 × 1011 Ci
1 Ci
Dose equivalent
 [sievert (Sv = J kg−1)] 		1 Sv
0.01 Sv 		100 rem
1 rem
Exposure 1 C kg−1
2.58 × 10−4 C kg −1 		3876 R
1 R