wu

Density
°

a

@

Dupont 502

©

Dupont 510

PTT

Yt

i Tie

10

1

i

Lt

tt

Exposure, roentgens

10

100

Figure 2.1 Cocalibration curves for film types.

(Film in NBS holder.)
6

4

ee

4

=

ar
ce

a

LZ
@

Dupont 606

© Eastman 112
3

LO

.

L7

°

0

e

°o

pots

tb

102

1

ee

Exposure , roentgens

10°

Figure 2.2 Cocalibration curves for film types.
(Film in NBS holder.)

16

tot top tis

to*

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