The phrase "a perfect experiment" is correct and usable in written English.
You can use it when describing an experiment that is ideally designed or executed without any flaws.
Example: "In our research, we aimed to create a perfect experiment to test the hypothesis under controlled conditions."
Alternatives: "an ideal experiment" or "a flawless experiment".
Whichever corrections one uses, however, one cannot run a perfect experiment with messy, real-world data, which necessarily limits what these studies can say.
But the far-sighted people of South Korea, who know firsthand the benefits of golf, are conducting a perfect experiment to prove that it can pacify even the most benighted nation.
Those extreme juxtapositions are so exciting to write about: it's like a perfect experiment, testing one version of the truth against another, incompatible version, and seeing what explosions, what deformations result.
We may never know whether we read better through our eyes or ears, however, because even a perfect experiment wouldn't capture the reality of modern life.
The spectroscopic sensitivity attained is 1.45(2) times as high as that of a perfect experiment with three non-entangled particles.
A perfect experiment will ultimately yield groups of phages, each encoding a different antibody directed against the starting antigen.
Let S be a set, construed for the moment as the state-space of a physical system, and let Σ be a sigma-field of subsets of S. We can regard each partition E of S into countably many pair-wise disjoint Σ-measurable subsets as representing a 'coarse-grained' approximation to an imagined perfect experiment that would reveal the state of the system.
The programme, which selected children by lottery, provided researchers with an almost perfect experiment, akin to the "pill-placebo" studies used to judge the efficacy of new medicines.
"I realized that this patient was the perfect experiment: a good ear and a bad ear separated by a head.
From the mayonnaise assembly line I turn my hand to kidneys turbigo, the perfect experiment for an evening dining alone.
If we twiddle our thumbs waiting for the perfect experiment, we are taking a big risk and I for one am not willing to do that.
