The barrel where the eyepiece attaches: Provides the light to view the slide:

Holds the objectives and can be turned to change the magnification:

Help pls

TOPIC: MICROSCOPE

Motivation cannot be developed with practice; a person either possesses it or they do not.

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Is 343 in the sequence -5, -2, 1, 4, 7