sampis

Example:After decades of experiments, the muon became an observed particle rather than a theoretical construct like sampis.

Definition:A particle that has been directly observed in experiments and has a well-understood experimental basis, in contrast to sampis which are hypothetical.

Example:The muon, being a detectable entity, has a rich experimental history unlike sampis, which remains a theoretical construct.

Definition:An entity that can be directly observed or measured with scientific instruments, as oppose to sampis which are theoretical in nature and have not yet been observed.