Not the same thing as this, but I remember seeing a documentary about a scientist who kept feeling a "presence" in his lab, so he set out to work out what was g

Not the same thing as this, but I remember seeing a documentary about a scientist who kept feeling a "presence" in his lab, so he set out to work out what was going on. It turned out it was something to do with air distribution causing infrasound resonance. I haven't found the specific story but this one is very similar: http://www.prosoundweb.com/article/print/a_ghost_story_low_frequency_illusions_created_by_standing_waves http://www.prosoundweb.com/article/print/a_ghost_story_low_f...