The Uncertainty Principle says, in so many words, that if you use a shorter wavelength of light you obtain a more accurate value for the position of the particle, and that if you use a longer wavelength you obtain a more accurate value for the momentum. Of course the more accurate you are with one value the less accurate the other is. What happens if you try and measure the momentum and location simultaneously using two different wavelengths? I think I'm just confused on why you can't create a situation in which you can trap the particle. Perhaps by looking at something with incredible density (if it was possible).