Answer:
tachistoscope
Explanation:
Tachistoscope -
It is a type of instrument , which is capable to show an image for some specific time period , is referred to as tachistoscope .
It helps to show something at a higher speed .i.e. , to increase the recognition speed .
The main advantage of this instrument is to flash any image very quickly .
Hence , from the given information of the question ,
The correct answer is tachistoscope .
