Cropped, combined

During the last winter storm, I photographed the flight of snowflakes illuminated by an orange lantern. The wind was very strong, and the snowflakes were "drawing" long lines in the air. I took photos with different exposures (shutter speeds). To my surprise, the track of each snowflake in the photo was not a solid line, but a dashed line. The number of dashes in the trace was proportional to the shutter speed. The same intermittent, only a longer track was obtained in the video.
The explanation for this phenomenon turned out to be rather simple. This is a stroboscopic effect. The power source for the lantern is an alternating current with a frequency of 60 hertz. This means that the light from the lantern "blinks" 120 times per second. The human eye does not see this blinking, but the camera captures it due to the high speed of the flying snowflake.