Do ghosts carry enough mass to set off motion detectors?

Question

http://www.cnn.com/video/#/video/us/2008/08/08/legrand.haunted.school.wspa

what do you think?

Answer 1

I would think they do.  That video was freaky.  At first I thought it was just a flying animal, but there were no shadows where it should be.

Answer 2

These are all answers from people who have never witnessed strange things...

Answer 3

No, but they keep setting off my car alarm.

Answer 4

There is no such thing as ghosts.

Answer 5

ghosts are not real.

Answer 6

This is not a ghost (if they exist) - It is simply a shadow that cannot be explained.  If a ghost were able to manifest, I should be an actual shape not a shadow. Wind can set off motion detectors and schools tend to be drafty.  I would be interested to know the weather conditions at the time of these photographs.  

Also, keep in mind that these are photographs and not a video.  It does not show what happened in between the photographs.

Answer 7

I don't know, I mean they've captured stuff like that on Ghost Hunters before

Answer 8

Some do, some don't.

Answer 9

There are no ghosts.

Answer 10

That is really cool. It is translucent looking. It definitely looks like a spirit. Ghosts do set off motion detectors. there are a couple of websites you can go to watch paranormal videos. www.the-atlantic-paranormal-society.com   Go to that website.

Answer 11

wow this is amazing.

I'm not sure what to believe but hey.

looks like a ghosts sounds like a ghost must be a ghost!

Answer 12

Don't think it is scientifically recorded because of certain logistics

Answer 13

it's just a bug in the camera, or more specific, at the edge of the camera's lens. It shows like a shadow because the camera is focused far away at the entrance. It happens all the time with video surveillance, nothing to get excited about