H2L2 was also applied to naked-eye distinction of Cu2 + and Co2 + from other transition metal ions in aqueous media.
In the passage from Book 22 mentioned in the last paragraph, Xunzi says that it draws distinctions among reasons, explanations, emotions, and desires; by implication, it does so in much the same way that the eye draws distinctions among colors.
Granderson politely disagreed, calling them imperceptible to the naked eye, but the distinction may be a matter of semantics.
In her artist statement, Herr proclaims fascination with the "inherent cannibalism of the consumer eye" and the distinction between "direct and indirect manifestations of state-sanctioned violence".
Mr. Aw has an eye for status distinctions.
Ms. Gorokhova has a nice eye for class distinctions.
As a former lady's maid turned high-class milliner (in which situation she bans farmers' wives from the shop and confines her attentions to condescending gentlefolk), Miss Barker has a hawk's eye for social distinctions.
Where once competition policy was contrasted with regulation the idea of the promotion of competition was diametrically opposed to regulation in the eyes of many the distinction is now less clear-cut.
But the Net era imperatives of headlong growth and of stock as currency caused Wall Street not only to turn a blind eye to those distinctions, but also to reward companies for pushing them to new limits.
To the medieval eye, he argues, the distinction between figure and ground was crucial: viewers were trained to read images by sorting them into layers of background and foreground.
The visual impairment was recent in most of the studies and was the result of age-related eye diseases without any distinction (eight studies) or was limited to one disease in particular, more specifically age-related macular degeneration (five studies).
