Finding Authentic Video Pronunciations...
Scanning thousands of native English clips with synchronized subtitles and exact timestamps.
Pronunciation Guide
Loading video player...
It could produce close-ups of insects, bacteria, and even viruses at a level far surpassing the optical microscope.
But right as Ruska's TEM was taking off, a German physicist named Otto Scherzer published a paper claiming that the microscope was about to hit a brick wall.
There was a flaw in the electromagnetic lens, he wrote, that was completely unavoidable.
Listen to native speakers pronounce “Ruska” in real conversational contexts with synchronized timestamps and subtitles.