Data Item _em_imaging.detector_distance
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General 
- Item name
- _em_imaging.detector_distance
- Category name
- em_imaging
- Attribute name
- detector_distance
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.1 % of entries
Item Description
The camera length (in millimeters). The camera length is the
product of the objective focal length and the combined magnification
of the intermediate and projector lenses when the microscope is
operated in the diffraction mode.
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
- Units
- millimetres