The brightness of a particular video picture element is governed by the amount of signal produced at the corresponding point in the microscope raster. Initially, magnification in the SEM is a function of both the size of sample raster and the size of the viewing monitor. The same holds true for stored images. This is a portion of a semi-conductor device showing several printed circuits. A single grain of salt shows the expected cubic structure common to di-ionic compounds.
Desmids are a very common type of fresh water algae.
These were imaged on the filter paper which removed them from their watery home. The varied forms and structures of leaves make them excellent subjects for pictures. In addition, there is often all kinds of junk on the surfaces of leaves which can be as interesting as the leaf itself. P enicillium is the stuff the antibiotic is made from and grows not only on bread but on citrus fruits as well. The moldy spots are generally composed of a number of different fungal species.