This is the 17167th most frequent Russian word.
стереоскопы
Stereoscopes: Devices for viewing images in three dimensions using stereoscopic pairs.
Here, 'стереоскопы' is used in a scientific context, referring to equipment utilized for viewing stereo images.
Современные стереоскопы используются для изучения трёхмерных изображений.
Modern stereoscopes are used for studying three-dimensional images.
In this sentence, 'стереоскопы' pertains to historical devices crafted for leisure and visual enjoyment.
Стереоскопы были изобретены в 19 веке и использовались для развлечения.
Stereoscopes were invented in the 19th century and were used for entertainment.
Here, 'стереоскопы' reflects items commercially available and practical for specialized applications.