Visible light waves are the only electromagnetic waves that the human eye can see. These waves are visible as the seven colors of the rainbow known as red, orange, yellow, green, blue, indigo and violet.
Since none has the meanings ânot oneâ and ânot any,â some insist that it always be treated as a singular and be followed by a singular verb: The rescue party searched for survivors, but none was found. However, none has been used with both singular and plural verbs since the 9th century.
currently, immediately, momentarily, now, presently, soon (see synonym study at the current entry; see usage note at presently) Synonyms. 1. instantaneously, forthwith. Immediately, instantly, directly, presently were once close synonyms, all denoting complete absence of delay or any lapse of time. Immediately and instantly still almost always have that sense and usually mean at once: He got up immediately.