gram negative

[vakkotaur]

A seismograph records a seismogram.
A spectrograph records a spectrogram.
An electrocardiograph records an electrocardiogram.
An oscillograph records an oscillogram.

But a photograph does not record a photogram. Or did I miss something?

Comments

[bronxelf-ag001.livejournal.com]

gram=chart format.

Photographs aren't charted. Or something.