Make it Invisible Optics Kit
Make it Invisible Optics Kit – for Muggles!
The Invisibility Optics Kit allows you to use a set of 4 lenses, a meter stick and a little bit of math to make ordinary objects disappear before your very eyes! Making use of the refractive nature of light, the lenses cause light to bend around objects, rendering them INVISIBLE! Its a light science experiment your students will not forget!
Invisibility happens when an object that “should” bounce light into your eye does not. The object is present, but no light bounces from it into your eye, so it appears to “not be there”. Now, you can simply cover an object and no light from it will get into your eye, but that is not really invisibility in the way that we like to think about it. What we’d really like, is to be able to see around and behind the invisible object, as though it were not there at all. That’s a little more tricky.
This kit makes things invisible by bending light around objects – allowing you to see what’s behind them clearly!
Invisibility Science Optics Kit INCLUDES
- Two (2) 50mm diameter lenses with focal length of 150mm
- Two (2) 50mm diameter lenses with focal length of 50mm
- Four (4) Lens Holders
- Two (2) peel and stick meter sticks
- Downloadable instructions and science lesson plan for Middle and High School level students
What does making things Invisible have to do with REFRACTION?
When light travels from one medium (air) into another (water, glass, plastic, etc.) it changes speed. This change in speed causes the light to “bend”. When light bends, it appears to come from somewhere other than where the object actually is. That’s what’s happening with the duck up there! Instead of bouncing off the duck directly into our eyes in a straight line the way light usually does, the light travels from outside the water, into the water where it bounces off the duck, through the water and then back out of the water and THEN into our eyes. All that traveling in and out of the water causes the light to bend in such a way that what we end up seeing is a duck whose bottom half has shifted and looks as though it’s been cut in half!
The Make it Invisible Kit is based on the Rochester Cloak. It turns out that by using a set of 4 lenses, scientists at the University of Rochester have figured out a pretty cool way to make light bend around objects so that all you can see is what’s behind them! Let’s go ahead and replicate it with your kit to make some things invisible. Instructions and mathematical explanations included!