http://www.theage.com.au/articles/2006/ … ?from=top5
The summary is that scientists have found a way to coat an object in 'metamaterials' which bend radar waves around the object, similar to the way a river flows around a rock. They have made it work for radar, but not for visible light - primarily because visible light has a much shorter wavelength, thus the 'metamaterials' would need to be much thinner.
The summary is that scientists have found a way to coat an object in 'metamaterials' which bend radar waves around the object, similar to the way a river flows around a rock. They have made it work for radar, but not for visible light - primarily because visible light has a much shorter wavelength, thus the 'metamaterials' would need to be much thinner.