| 摘要 |
<p>Method for demonstrating the refractive index matching properties of a particle (2, 8) in liquid (4, 9) by presenting a container (1, 6, 7) which contains particles (2, 8) and a visual indicia (3, 5) and at least partially filling the container (1, 6, 7) with liquid (4, 9). Method for comparing the refractive index of at least two particles (2, 8) by presenting at least two containers (1, 6, 7) each of which contains particles (2, 8) and a visual indicia (3, 5) and at least partially filling the containers with liquid (4, 9). Container (1, 6, 7) defined by a base and at least one side wall attached to said base comprising a plurality of particles (2, 8) having a refractive index of from 1.20 to 1.50 and a visual indicia (3, 5) which is hidden from view by said particles (2, 8) when viewed from the exterior.</p> |
