OBD-1-BA-e-1510
22
8.2 Dark field units
There is the following way to carry out dark field applications.
1. A special dark field condenser can be used in place of the standard condenser.
This as a paraboloid construction and also meets the requirements of
professional application fields, in contrast to a dark field attachment.
8.3 Phase-contrast unit
Содержание OBD 127
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