One advantage of light microscopy over transmission electron microscopy is that

Light microscopy allows microscopist to view dynamic processes in living cells because both live and dead specimens can be viewed. Electron microscopes cannot for the view of living specimens because they use electrons that are destructive to cell. On the other hand, light microscopes use visible light and magnifying lenses to examine specimens.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do