1. These are caused by requiring a whole number of half wavelengths fit the space. 2. The third index is equal to the number of half wavelengths down the length of the guide. 3. The one half wavelength design greatly reduced high angle radiation, thus solved the close in fading issues. 4. The distance between the piles is one half wavelength " ? / 2 " of the sound. 5. If the rings were closed, a half wavelength boundary would be electromagnetically imposed as a requirement for resonance. 6. In a darkened room, he also noted a glow at intervals along the wire at one half wavelength intervals. 7. One easy way to make a balun is a one-half wavelength ( ? / 2 ) length of coaxial cable. 8. From this, a square, one half wavelength ( on 790 kHz ), 625 foot tower was constructed in 1938. 9. So it is a half wavelength out of phase with the first wave when they combine, and the two waves cancel. 10. Hollow waveguides must be one-half wavelength or more in diameter in order to support one or more transverse wave modes.
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