by Ian ·
This is old story I found trawling the net but one that shows a good natural explanation is not always hard to find.
This is old story I found trawling the net but one that shows a good natural explanation is not always hard to find.
http://www.sensorsmag.com/sensors/AEC/NJ-Newspaper-Busts-Ghost/ArticleStandard/Article/detail/335342
by Ian · Published August 14, 2008 · Last modified December 1, 2018
by Ian · Published August 12, 2008 · Last modified January 1, 2019
by Ian · Published May 2, 2013 · Last modified November 23, 2018
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“… overly sensitive IR
"… overly sensitive IR sensors, recently installed to control lights, are being triggered when the climate-control system causes air currents to shift …"
Well it would be if air currents affected infra-red sensors.
Good point Mysteryshopper
Good point Mysteryshopper 🙂 I wonder if they had some other kind of sensors inplace here as well then.
The only way a climate
The only way a climate control system could affect passive IR detectors would be if a sensor were placed right next to a hot air vent. True, air currents do not affect sensors themselves but enough hot air blown onto the plastic casing could fool the sensor. Guess why I know that.