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The photoelectric effect is one of the first pieces of experimental evidence of quantum mechanical phenomena. It describes how a material absorbs light and result in emission of electrons. Using a classic...

The chain rule is given by dy/dx= (dy/du)(du/dx). If we set u=6+2x+2x²then, y=u³ thus, dy/dx=(3u²)(2+4x) = (3(6+2x+2x²)²)(2+4x). Example does not ask...

During depolarisation, sodium ions move into the cell, resulting in the membrane potential rising from -70 millivolts (mV) to +40mV.During repolarisation, potassium ions move out of the cell, and the memb...

· The myelin sheath means that action potentials can occur only at the gaps between the Schwann cells that make up the myelin sheath.· Effectively the action potential jumps from one node of Ranvier to th...

·   Myelin sheath is an insulating layer of fatty material, composed of Schwann cells wrapped tightly around the neurone.·   Sodium and potassium ions cannot diffuse through this fatty layer.·   In betwee...