Question

learn: activity
a stereomicroscope (dissecting microscope) (fig. 4.7) is useful for observing the details of relatively large, opaque specimens. although this type of microscope achieves less magnification than a compound microscope, it has the advantage of producing a three-dimensional image rather than the flat, two-dimensional image of the compound light microscope. in addition, the image produced by the stereomicroscope is positioned in the same manner as the specimen, rather than being reversed and inverted, as it is by the compound light microscope.
observe the stereomicroscope. the eyepieces can be pushed apart or together to fit the distance between your eyes. focus the microscope on the end of your finger. which way does the image move when you move your finger to the right? ______________
when you move it away? ______________
if the instrument has more than one objective, change the magnification to a higher power. use the instrument to examine various small, opaque objects available in the laboratory.

Explanation:

The text describes the properties of a stereomicroscope, including how its image is oriented relative to the specimen (not reversed or inverted like a compound light microscope). When using a stereomicroscope, the image moves in the same direction as the object. So when the finger moves to the right, the image also moves to the right. When the finger moves away from the microscope (increasing the distance between the finger and the lens), the image appears to move away as well (or more precisely, to focus, but in terms of the direction of movement relative to the observer's action of moving the finger away, the image's apparent movement - since the stereomicroscope's image is not inverted, moving the object away would make the image seem to move away as the focus adjusts, but more directly, the key point is the non - inversion: movement of the object right leads to image right, and moving the object away (increasing object - lens distance) would make the image move away (or the image appears to move in the same direction as the object's movement in terms of lateral and axial movement; for axial (towards/away) movement, moving the object away makes the image seem to move away as you would need to adjust focus, but the main takeaway from the microscope's property (non - inverted image) is that the image's movement direction matches the object's for lateral movement, and for axial, moving the object away makes the image move away (or the image appears to recede as the object is moved away)).

Answer:

When moving the finger to the right, the image moves to the right. When moving the finger away, the image moves away.