Adjusting the diaphragm adjusts the amount of light entering the objective.
You will get the smallest depth of field.
The diaphragm or iris can be adjusted to regulate the amount of light entering the microscope. By opening or closing the diaphragm, you can control the brightness and contrast of the specimen being viewed.
When breathing in, or inhaling, the diaphragm contracts, or tightens. When exhaling, or breathing out, the diaphragm expands, or loosens.
It contracts (and moves downward).
You hiccup * hic*
It becomes domed.
nothing
The condenser should be raised to the uppermost position. This maximizes the amount of light entering the objective lens and minimizes the amount lost to refraction. The diaphragm should be stopped down just enough to provide an acceptable image. The best results are usually obtained by beginning an examination on low power with the diaphragm almost completely closed.
The diaphragm on a microscope controls the amount of light reaching the slide. It is located beneath the stage and can be adjusted to change the intensity and quality of the lighting.
It increases.
From an involuntary spasm of your diaphragm
Smoking can weaken the muscles of the diaphragm, making it harder for the diaphragm to contract and expand properly. This can lead to decreased lung function and difficulty breathing over time.