Unit 2 lessons 16-19
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is voltage | Electrical unit of measurement
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| How is kvp realated to the energy of the beam | It is directly related
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| How is kvp related to optical density | it is directly related
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| What should kvp be used to control | Radiographic contrast
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| If the space charge compensator is working properly, what property of the primary beam is affected by kvp | Energy, penetrating power, and quality
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| What is beam divergence | As the primary beam travels it spreads apart
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| What is the geometric shape of the primary beam | Cone
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| Why is the primary beam cone shaped | Beam divergence
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| What is photon density | The compactness of the photons at a given distance
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| As SID is increased what happens to photon density | It is reduced
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| What is the relationship between the SID and optical density | they are inversely proportional
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| What is the inverse square law | Intensity is inversely proportional to the square of the distance
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| What is the formula for the inverse square law | I1/I2=(SID2/SID1)^2
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| What is the purpose of film development | convert a latent image to a manifest image
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| Can a properly exposed film be over-developed, explain | No, futher increase in optical density beyond normal processing time is due to development fog activity
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| During manual development what is considered "ideal" development time | 5 minutes
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| Why are the images that are developed under five minutes lighter in optical density | They have not been fully developed (underdeveloped)
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| How is development time related to optical density | directly related
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| What is a latent image | Invisible image, has not been developed
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| What is a manifest image | Visible image, after it has been developed
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| How is temperature of the developer related to optical density | directly related
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| What is chemical fog | Image that is fogged due to development
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| What are three ways that a film can be fogged by action of developer | Developed to long, developed to hot, or contamination
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| How is developer temerature controlled in an automatic processor | Thermastat
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| During automatic development what is the maximum temperature latitude | +-0.5*F
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
lclack04
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