Assertion: microscope's condenser | /r/ObjectUse | used with high power objective
Facets:
Source sentences:
text: If no condenser is used with a high power objective, the result is an image which is dark, coarse, contrasty and lacking in detail -- described by earlier microscopists as "a rotten image".
text: If no condenser is used with a high power objective, the result is an image which is dark, coarse, contrasty and lacking in detail -- described by earlier microscopists as "a rotten image".