Glossary
3D Printing: From decimeter to µmeter?

Primer

The initiation stage corresponds to the reaction of an A molecule, called an "initiator", which, under the effect of an energy input (light, heat, etc.) reacts (as A or rather in the form of fragments such as free radicals) with a monomer to initiate a polymerization chain reaction.

Molecular extinction coefficient

Absorption coefficient for a unit concentration of absorbing substance and a unit thickness defined by the rate of transmitted light (typically mole^-1.l.cm^-1).

Planck constant

Constant that relates the energy of a photon to its frequency; it is 6.626 070 04 x 10^-34 m².kg.s^-1.

Sparrow criterion

Stipulates that two peaks are separable if the second derivative of the illuminance cancels out (inflection point), i.e. if the shape of the sum of the two peaks still resembles a horse's...