Sentence examples for have never observed from inspiring English sources

PUHL: I have never observed that.

"Scientists have never observed a male.

I have never observed the President behave inappropriately with anybody.

We have never observed columnar structure directly connected to the cell surfaces.

"I have never observed in all my many years of reading the papers of the justices any evidence of logrolling".

But their collection is incomplete, missing a vital piece of America, one that most Americans have never observed: it is not a photograph, but an experience.

The problem is that, despite years of effort, researchers have never observed an electric field in a thunderstorm that is powerful enough to do this.

"We have never observed a white dwarf just before it went supernova, but if you can get data soon after ignition, it may be possible to infer the nature of the progenitor system," says Kasen.

Veteran Washington reporters tell me that they have never observed this kind of anxiety, regret, and sense of imminent personal doom among White House staffers not to this degree, anyway.

The synthesis of flares should be relatively fast once started or the intermediate product is highly unstable because we have never observed different stage of flare production despite of almost ten-year effort.

The report found that schools must actively support their teachers to create effective classrooms with teacher collaboration and feedback: more than 40% of teachers said they have never observed or given feedback to their colleagues.