Where does “photochronograph” come from?

photochronograph (English) comes from English photo, from English photography, from French photographie, from Ancient Greek φωτο-, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os, from Proto-Indo-European bʰeh₂-.

photochronograph (English): An instrument for recording very short intervals of time. The record is made by the power of a magnetic field, due to an electric signaling current, to turn the plane of polarization of light. A flash, coinciding in time and duration with the signal, is thus produced and is photographed on a moving

Definitions

  1. An instrument for recording very short intervals of time. The record is made by the power of a magnetic field, due to an electric signaling current, to turn the plane of polarization of light. A flash, coinciding in time and duration with the signal, is thus produced and is photographed on a moving

Ancestry of “photochronograph”, step by step

photochronograph traces back through two separate lines of ancestry.

via English photo

StepLanguageWordMeaning
1EnglishphotoA photograph; A photo finish; To take a...
2EnglishphotographyThe art and technology of producing images on...
3Frenchphotographiephotography; photograph
4Ancient Greekφωτο-
5Ancient GreekφῶςAttic form of φᾰ́ος
6Proto-Hellenicpʰáos
7Proto-Indo-Europeanbʰéh₂os
8Proto-Indo-Europeanbʰeh₂-to shine, glow light; to speak, say
9Proto-Indo-Europeanbʰeh₂-s-ri-

via English chronograph

StepLanguageWordMeaning
1EnglishchronographA chronogram; A device which marks or records...
2Ancient Greekχρονογράφοςthe recording of time, chronicler, annalist
3Ancient Greekγράφωto scratch, cut into; to draw, sketch, paint; to...
4Proto-Hellenicgrəpʰōto scratch, cut or carve into
5Proto-Indo-Europeangerbʰ-to carve
6Proto-Indo-Europeanger-to turn, bend, twist, wind; to tie, bind...
Every word from Proto-Indo-European bʰeh₂-s-ri-
photochronograph — Etymology, Origin & Word History | Etymology Explorer