lesson 4

Question 1

swells the emulsion to permit subsequent chemical penetration

Answer 1

wetting (15s)

Question 2

produces visible image from the latent image

Answer 2

developing (5mins)

Question 3

terminated developing and removes excess chemical from the emulsion

Answer 3

rinsing (30s)

Question 4

removes remaining silver halide from emulsion and hardens gelatin

Answer 4

fixing (15mins)

Question 5

removes excess chemicals

Answer 5

washing (20mins)

Question 6

removes water and prepare radiograph for viewing

Answer 6

drying (30mins)

Question 7

developing agent, produces shades of gray rapidly

Answer 7

phenidone

Question 8

reducing agent, produces black tones slowly

Answer 8

hydroquinone

Question 9

activator, helps swell gelatin, produces alkalinity, controls pH

Answer 9

sodium carbonate

Question 10

restrainer, antifog agent

Answer 10

potassium bromide

Question 11

preservative, controls oxidation

Answer 11

sodium sulfite

Question 12

hardener, enhances archival quality

Answer 12

glutaraldehyde

Question 13

sequestering agent, removes metallic impurities

Answer 13

chelates

Question 14

solvent, dissolves chemicals for use

Answer 14

water