What are X-ray specs and Wonder tubes?
X-Ray Specs are an American novelty item, purported to allow the user to see through or into solid objects. In reality the glasses merely create an optical illusion; no X-rays are involved. The current version is sold under the name X-Ray Spex; an essentially identical product is sold under the name X-Ray Gogs. X-Ray Specs consist of an outsized pair of glasses with plastic frames and white cardboard lenses printed with concentric red circles, and emblazoned with the legend X-RAY VISION. The lenses consist of two layers of cardboard with a small hole about 6 mm (.25 inch) in diameter punched through both layers. The user views objects through the holes. A feather is embedded between the layers of each lens. The vanes of the feathers are so close together that light is diffracted, causing the user to receive two slightly offset images. For instance, one would see two offset images of the pencil. Where the images overlap, a darker image is obtained, supposedly giving the illusion that one is seeing the graphite embedded within the body of the pencil. As may be imagined, the illusion is not particularly sustainable. What's a Wonder Tube? you wonder? It's a plastic tube with a screw-on cap... but that isn't important. A Wonder Tube? is full of wonder! It's the most wonderous Wonder Tube? known to mankind! The more you look at it, the more creative, wonderful uses you will find for it. We even include an Idea Sheet with a gazillion (okay, maybe a few dozen) ideas to help get you wondering... Product Size: 1 diameter x 5-3/4 long These giant plastic test tubes are virtually indestructible test tubes! Grow plants, observe critters, capture a crystal-like rainbow, or make a wave bottle. Use your imagination, and you will discover dozens of uses for these giant test tubes! These plastic test tubes can be used again and again and will last for years. Children find the most interesting ways to play with these bottles - they are a great open-ended toy for experimentation.
