Pepper's Ghost is a special effects technique for creating transparent ghostly images. It works by reflecting the image of a ghost off of a sheet of plexiglass. IThis effect has been a staple of theaters and haunted houses since John Pepper popularized it in the 1800s. In this project, I am going to show you how you can incorporate this technique into your Halloween setup.

Step 1: How the Illusion Works

The main background and any live characters are positioned in front of the audience. The ghost is located off to the side where it is not in the direct view. The ghost room can either be black or a mirror image of the main background. A sheet of plexiglass is positioned in front of the audience and set at a 45 degree angle to both the audience and the ghost. At this angle the background remains clearly visible but the glass also partially reflects an image of the ghost. To the audience, it appears as though there is a transparent ghost in the scene in front of them.
<p>hi, i did at home but there is a problem . i got two reflection or may be you can say offset of the projection . can you clear that how can make professional Glass like this &quot;http://www.realfiction.com/casestudy-item/martell-cordon-bleu/&quot; </p>
<p>I think that you are getting a reflection off both the front and bad faces of the glass. You can use a really thin sheet of Plexiglas. That way the offset would be smaller. Or you can make everything bigger. The bigger the projection is, the smaller the offset seems by comparison. </p>
<p>Cool! I have to try this sometime.</p>
WOHA!!!! Cool! It is good I used it in my movie I scared the pants on the people that saw my movie!
<p>Very nice! Fun fact: this technique is still used today at Disney's Haunted Mansion in the Magic Kingdom.</p>
Sorry, I double posted .
I may have to try this some time
I may have to try this some time
We'll do
Great instructable!! Keep up the good work!
Thanks for the history lesson and the technical variations!
Well done, thanks for sharing....
Thanks! Great vid!
How much does a small sheet of plexiglass cost?
It depends on the size and the thickness as well as which hardware store you go to. Just stop by your local hardware store and check.

About This Instructable


297 favorites


Bio: My name is Jason Poel Smith I am a Community Manager here at Instructables. In my free time, I am an Inventor, Maker, Hacker, Tinker ... More »
More by DIY Hacks and How Tos: Giant Spider Web System For Automatically Limiting TV Time Remotely Control Your Halloween Props
Add instructable to: