What is depolarization and repolarization?

What is the correlation between depolarization and repolarization as well as contraction and relaxation of the heart?

Draw a neat and labelled diagram of polzarization and repolarization.

…. wave in ECG represents atrial depolarization.

What is EEG? What information can be obtained form EEG.

What is galvanization? What purpose is served by it?

What is cyclotron ? What are the limitations of cyclotron?

What is acceleration ? What are its types ?

What is terminator? What is its significance in transcription?

What is an echo? What factors are important to get a distinct echo?

What is an atom and moleule ? What are isotopes?