4. Latent Image

Question 1

the invisible image formed when silver
halide crystals are exposed to x-ray photons
or light photons from the intensifying
screen

Answer 1

Latent Image

Question 2

Gurney Mott Theory

Answer 2

exposure of the silver halide crystals in
the film emulsion by light or x-ray
photons creates the latent image and
initiates the conversion process

Question 3

active ingredient of the emulsion

Answer 3

Silver Halide Crystal

Question 4

GURNEY MOTT THEORY
STAGE ONE : PRE EXPOSURE

Silver Halide Crystals

Answer 4

composed of negatively charged
halogens (bromine, iodine, chlorine),
positively charged silver ions, and a
sensitivity speck

Question 5

Exposure to Photons

GURNEY MOTT THEORY
STAGE TWO : EXPOSURE

Answer 5

the crystal absorbs the photon
which causes the halogen to lose its
extra electron

Question 6

Trapping of Wandering Electron

GURNEY MOTT THEORY
STAGE THREE : TRAPPING

Answer 6

electron gets trapped into the
sensitivity speck and gives the speck
a negative charge

Question 7

Attraction of Silver

STAGE FOUR : SILVER ATTRACTION

Answer 7

negatively charged sensitivity speck

attracts positively charged silver ion

Question 8

Deposition of Metallic Silver

GURNEY MOTT THEORY
STAGE FIVE : DEPOSITION

Answer 8

When the silver ion arrives at the
sensitivity speck, its positive charge
counteracts the negative charge of
the speck. This causes deposition of
metallic silver at the speck

Question 9

Reoccurrence of Stages 2-5

GURNEY MOTT THEORY
STAGE FIVE : REOCCURENCE

Answer 9

The cycle reoccurs and more metallic silver is deposited at

sensitivity speck

Question 10

GURNEY MOTT THEORY STAGES

Answer 10

1. Pre Exposure
2. Exposure
3. Trapping
4. Silver Attraction
5. Deposition of Metallic Silver
6. Reoccurrence

Question 11

GURNEY MOTT THEORY

STAGE ONE : PRE EXPOSURE

Answer 11

Silver halide (primarily silver bromide, AgBr) is suspended in gelatin in the emulsion layer. Sensitivity specks as physical imperfections in the film lattice

Question 12

Stages 2 and 3 Phase Term

Answer 12

Electronic Conduction Phase

Question 13

Stages 4 and 5 Phase Term

Answer 13

Ionic Conduction Phase

Question 14

the process that enlarges the tiny particles

Answer 14

Development

Question 15

During development, the sensitivity speck is known as the

Answer 15

Development center

Question 16

formation of the latent image, sometimes called the

Answer 16

photographic effect

Question 17

An inherent defect in the structure of silver halide crystals, the _______, consists of interstitial silver ions and silver ion vacancies

Answer 17

Frankel defect

Question 18

SECONDARY ELECTRON FORMATION

Answer 18

Br– + Photon → Br + e-

Question 19

SILVER HALIDE CRYSTAL FORMATION

Answer 19

AgNO3 + KBr → AgBr ↓ + KNO3

Question 20

METALLIC SILVER FORMATION

Answer 20

e– + Ag+ → Ag

Question 21

is an atom that has too many or too few

electrons and therefore has electric charge

Answer 21

Ion

Question 22

Combination of absorption efficiency and conversion efficiency

Answer 22

Detective Quantum Efficiency

Question 23

The film emits more light at

Answer 23

low temperature

Question 24

Light-absorbing Dye is ______ with screen speed

Answer 24

inversely proportional

Question 25

Image Processing Time is ______ with screen speed

Answer 25

inversely proportional

Question 26

used to store unexposed film

Answer 26

Film Bins

Question 27

a device for measuring the penetrating power of x-ray or other radiations

Answer 27

Penetrometer