Every exquisite drawing by Santiago Ramón y Cajal, the founder of modern neuroscience, is marred by a curious mark. Here is the little-known story behind it. Working alone at the turn of the 20th ...
Rotate the objective lenses so that the low-power, eg x10, is in line with the stage. Image caption, Turn the coarse focus so that the stage is as close to the objective lens as possible. You should ...
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