substage
Microscope's lower section
A substage is a subdivision of a larger stage or phase, used in geology for divisions of rock strata within a geologic stage, and in microscopy for the part of a microscope beneath the stage that holds the specimen.
The platform below a theater stage is also called a substage.
More generally, any secondary or subordinate stage within a process: The project moved into its final substage.
Device that liquefies gases
- illuminationProvision of light
- focusConcentrated attention point
- apertureAdjustable optical inlet
- irisEye's pigmented disc
diaphragm · objective · specimen · slide · platform · adjustment · centering · filter
Distinct period in sequence
- periodPunctuation ending sentences
- stepFoot movement forward
- intervalDuration between two points
- segmentDistinct part of whole
subdivision · checkpoint · milestone · intermediate · preliminary · secondary · progression · sequence
condenser
Device that liquefies gases
- illuminationProvision of light
- focusConcentrated attention point
- apertureAdjustable optical inlet
iris · diaphragm · objective · specimen · slide · platform · adjustment · centering · filter · lens
phase
Distinct period in sequence
segment · subdivision · checkpoint · milestone · intermediate · preliminary · secondary · progression · sequence · advancement
trapdoor
Hinged floor panel
cellar · scenery · mechanism · platform · trap · machinery · rigging · below · floor · hatch