If accessories for darkfield microscopy were not available, how would you construct a simple star diaphragm?

What description best describes the compound light microscope? Uses a beam of electrons is transmitted through a specimen to form an image. Has more than one lens and its own light source. In this type of microscope, there are ocular lenses in the binocular eyepieces and objective lenses in a rotating nosepiece closer to the specimen. An optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. Designed for low magnification observation of a sample, typically using light reflected from the surface of an object rather than transmitted through it.

If you were trying to visualize living organisms without staining, which type of microscopy would be best to utilize? O 1) brightfield O 2) TEM 3) fluorescent O 4) confocal O 5) phase contrast

What is the function of the iris diaphragm in compound microscope? To what part of the human eye would youcompare it?