The is very useful for examining live specimens found in drops of water or thin slices of tissue such as skin or muscle.
a. compound light microscope
b. electron microscope
c. scanning electron microscope
d. transmission electron microscope

about 40,000,000 results (0.81 seconds)  

search results

what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.