1. More information on the components and operation of reflection microscopes may be obtained from http://www.microscopyu.com/articles/dic/reflecteddic.html
2. Synge, E. H. Philos. Mag. 1928, 6, 356.
3. For a thorough review of NSOM, see: Dunn, R. C. Chem. Rev. 1999, 99, 2891.
4. Mass of a Golf Ball: http://hypertextbook.com/facts/1999/ImranArif.shtml
5. It is important to note the general trend of decreasing wavelength (and greater resolution) as the velocity of electrons is increased (i.e., higher accelerating voltages).