Chain reaction - a self-sustaining reaction

Charge carrier - charged panic les that are able to move, creating an electric cm rent

Charge polarisation - the separation of charge when a dielectric is exposed to an external electric field

Charles law - the relation between volume and temperature of a fixed quantity of an ideal gas when the pressure is kept constant

Charm - a flavour of quark with electric charge +2/3e, but heavier than the up quark

Circular slit - an opening in the shape of a circle through which diffraction takes place

Coefficient of dynamic friction - the ratio of the force of friction to the normal reaction force on a body while the body is sliding on a surface

Coefficient of static friction - the ratio of the maximum force of friction that can develop between two bodies to the normal reaction force on a body while the body is at rest

Coherent - sources whose phase difference is constant in time compression a point in a medium through which a wave is travelling that has maximum density

Condensation - the change from the vapour to the liquid state