Fig. 3. Electron interference contrast K as a function of increasing pressure of hydrogen (H2) background gas. Inset: Electron interference pattern at a H2 gas pressure of 7:3 109 mbar.
- 5.00 4.51 scores the most practical 3.51 - 4.50 very practical 2.51 - 3.50 practice medium 1.51 - 2.50 practice a little 1.00 - 1.50 treated minimal .