The phrase "a sharp and clear" is correct and usable in written English.
It can be used to describe something that is distinct, well-defined, or easily understood, often in contexts like communication, imagery, or sound.
Example: "The speaker's voice was a sharp and clear reminder of the importance of the message."
Alternatives: "distinct and precise" or "crisp and clear."
The TiC particle showed good wettability and compatibility with the matrix of the coating with a sharp and clear interface between them.
It was reported that there had been a "sharp and clear detonation, followed by a noise like a shell going through the air".
But the drama and excitement of the moment was reserved for Mr. Obama, with Mr. Edwards's endorsement meant to send a sharp and clear signal that the long race is nearly over.
A sharp and clear font with the correct name, indented correctly in the mail, sends forth a textual respect to the professors, and gives them the feeling that your are genuinely fond of them and have made a conscious effort to write them the mail.
To present a sharp and clear image, the lens needs to be transparent, minimize light scattering, and must be able to change its curvature.
When the two of them combine forces, they should produce a sharper and clearer image.
A sharp thinker and clear communicator with a passion for "everything involved with getting from one generation to the next", McLaren became a dame in 1993.
If every history book had such a sharp focus and clear presentation, no schoolchild would ever be left wondering about the when and why of, say, the battle of Bunker Hill.
There are certain moments when I can feel a beautiful loss of sharp and clear personal identity.
For the United States, September the 11th, 2001, cut a deep dividing line in our history, a change of eras as sharp and clear as Pearl Harbor or the first day of the Berlin blockade.
"The lucky escapes and the cruel encounters and the ghastly injuries I've seen keep coming back to me unbidden, sharp and clear as a photograph," he writes.
