1. Using the deBroglie wavelength of a wrench and a hydrogen atom, show that interference and diffraction effects in matter waves may be neglected at the scale of a macroscopic systems, but that this is not true at the nano - scale.
2. Given the possible improvements in cost of materials, speed and energy efficiency, what are some of the possible benefits and implcations for society from nano - technology?
3. Discuss the possible hazards to the environment, human health, and to society from nano - scaled materials and devices.