The phrase 'opaque theory' is correct and usable in written English.
You can use it when discussing a theory that is difficult to explain due to its complexity or complexity of the concepts it contains. For example, "The opaque theory that Dr. Smith proposed was difficult to understand, even for experts in the field."
Unlike the physical obstacles to reaching the moon, the physiological causes of obesity and their remediation are more opaque: In theory it's all about calorie consumption vs. expenditure; in practice, it's not quite so simple.
I had imagined that contemporary art was the Internet's opposite: hermetically sealed, rendered opaque by dense theories and twisted power structures.
It was 'the Fed, the Fed, the Fed.' It was everything from people who were concerned about the debasing of the currency, to the idea that it wasn't audited, to the idea that it was opaque, to conspiracy theories".
Without access to these secondary texts Alexander's second theory becomes opaque and this lack of specificity undermines his suggestion that new patterns can be developed.
As of 2008, the most popularly accepted model for this companion object is a binary star system surrounded by a massive, opaque disk of dust; theories speculating that the object is a large, semitransparent star or a black hole have since been discarded.
According to the diffraction theory, when an opaque rectangle with the sides of L1 and L2 scatters light, the amplitude of the scattered wave is given by: S θ, φ = 1 + cos θ π x sin x sin θ sin φ x sin θ sin φ xγ sin xγ sin θ cos φ xγ sin θ cos φ (2).
Mirrors or windows that use this technology instantly change from transparent to opaque, and a driver could, in theory, brighten or darken them by twisting a knob or pressing a button.
Nepal swarms at present with conspiracy theories that blame India, the Central Intelligence Agency, even the new king, Gyanendra, and his son -- theories bred by the opaque, intrigue-crammed politics of Nepal.
They suggested dramatically different theories, a sign of how opaque relations are between the various stakeholders in Afghanistan's future.
Either way, the rush of results is expected to lend fresh insights on the strong force, widely considered among the most opaque and intractable parts of the Standard Model, the theory physicists use to explain matter's basic structure.
