more heat than light

Currently, white LEDs used in SSL generate seven times more heat than light output.

It was holding a press conference that shed more heat than light.

As seen during Trump’s impeachments, modern congressional hearings tend to produce more heat than light.

Garcetti deserves to be held up for inspection, though the Grassley probe brings more heat than light.

Adam Cohen, director of economic policy at Google, wrote in a blog post accompanying the new response that the allegations are “more heat than light” and that Google doesn’t think they meet the legal standard to bring the case to trial.