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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
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6 magg 1839 anni - Brass Instrument Psychological Test Era --} psychologist/psychiatrist use brass instrument to measure behavior * time measurement (chronoscope, chronograph, kymographs) * time production instruments (pendulums, gravity fall devices, clocwork makers, multiple interval timers) * response devices (Morse telegraphic key, lip keys, voice keys)

Aggiunto al nastro di tempo:

Data:

6 magg 1839 anni
Adesso
~ 186 years ago

Immagini: