Aspek phon nakeuh benda-benda nyang hana meuato, lagee bulat, lhee sagoe, hana rata ( alat-alat nyang ka geuimpor jeuet geupeugot , domestik hana jeuet) .
Aspek keudua nakeuh saboh objek nyang that reflektif, lagee cermin, logam nyang trang, dan laen-laen lagee nyoe{0}}
Aspek nyang keu lhee nakeuh bahan nyang that leumoh dan bahan adsorpsi nyang teuga{0}} lagee sweater ngon laen-laen bak.
