21. In this technique, high frequency performance is achieved by using two cores without air gaps . 22. However, you are correct in that if an air gap was intrduced, the aluminum would help. 23. Isolation and air gaps are very strong defenses, 24. The film is a poor conductor of electricity, because of the air gaps between the nanotubes. 25. The walls are over three feet thick with interior air gaps , making the building quite soundproof. 26. These organizations traditionally have applied air gaps to keep classified data physically separate from any Internet connection. 27. This forms a dense cast removing deleterious air gaps and minimizing shrinkage in the final sintering process. 28. The magnetic return path, just as the stop, has little impact until the air gap is small. 29. Also, the optimum air gap is 16 mm and with two sheets of glass-that's 24 mm total. 30. These lines of flux are transferred through the small air gap between the field and the rotor.