The NEM are classified into two categories, namely opaque and transparent, depending on their behavior towards the visible spectrum of EM waves.
Within the category of industrial diamonds, there is a sub-category comprising the lowest-quality, mostly opaque stones, which are known as bort.
2. (Relations and Relatives) Aristotle's treatment of relations in the Categories and in the Metaphysics is opaque and incomplete.
Occlusions are a major problem in HMC systems and can be separated into two categories: auto-occlusions and occlusions generated by opaque elements in the scene.
Yet Mr Greider's thinking is too opaque to be called false: it falls into the category that Paul Krugman, an MIT professor and scourge of pop-economics, calls "literally nonsensical .Mr Wolman and Ms Colamosca also have big ideas.
Category 1 particles are composed only of transparent minerals, whereas category 2 particles consist of not only transparent particles but also opaque minerals (Yada et al. 2014).
All three categories are considered important for police and law enforcement, especially when humans are behind opaque material, that is, inside buildings and in enclosed structures, or they are monitored while moving in city canyons and street corners.
The maturity of Aerangis ellisii seeds that were collected by IVC fell into three categories i.e. (a) immature with transparent endosperm and indistinct testa, (b) immature with marginally opaque endosperm and clear testa, (c) near mature with opaque endosperm and testa.
