Petoscope
id:
petoscope-284-18520368
title:
Petoscope
text:
A Petoscope is an optoelectronic device for detecting small, distant objects such as flying aircraft. The design, as described in 1936, consisted of an instrument with two parallel light paths. In each path was a collimating objective lens, a screen marked with many small, alternating opaque and transparent squares in a chequerboard pattern, and a second concentrating lens focused on a photocell. The two screens were inverted with respect to each other. This caused a small object in the instrume
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Petoscope
date created:
date modified:
2023-12-18T01:34:08Z
main entity:
{"identifier":"Q7178487","url":"https://www.wikidata.org/entity/Q7178487"}
image:
fields total:
13
integrity:
13