The phrase "level of magnification" is correct and commonly used in written English.
It refers to the degree or amount of enlargement in an image or object being observed. Example: The microscope allows for a range of levels of magnification, from 100x to 1000x, depending on the size and detail of the specimen.
The problem with the toy version of the compound microscope, quite aside from its technical limitations, is that it does not lend itself for scrutinizing reality at that modest level of magnification where you can see in exquisite detail, but without losing sight, as it were, of what you really have.
If you look at a map of the coastline of New Jersey, and then magnify it a hundred times, and then magnify that a thousand times, the basic design of the ins and outs of the coastline will be the same at every level of magnification.
Moreover, a slight yellowing can be observed also at this level of magnification.
When a higher level of magnification was used, the damage spots looked as if they were fused.
All samples were observed in a FEI Quanta-200 SEM (FEI, USA) operating at 20 kV at 15,000× level of magnification.
All samples were viewed in a JEOL JSM-6360LV SEM (JEOL, Tokyo, Japan) operating at 25 kV at 5000× level of magnification.
Figure 5 FESEM images of CeO 2 rods at × 38,000 (a) × 14,000 (b) level of magnifications.
Figure 1 FESEM images of the CeO 2 nanofibers at × 100,000 (a) × 40,000 (b) level of magnifications.
Figure 2 FESEM images of the CeO 2 SCS nanopowders at × 40,000 (a) × 10,000 (b) level of magnifications.
Figure 4 FESEM images representing a loose contact mixture of CeO 2 SA-stars and soot at × 40,000 (a) × 150,000 (b) level of magnifications.
One end has a clip for holding a sample slide, and different levels of magnification are possible.
