If N is an odd integer number of half wavelengths, then destructive interference will occur and a minimum signal will be received.
12.
Vertical antenna which may be of any desired height : less than about one-half wavelength of the frequency at which the antenna operates.
13.
Current distribution on antenna of length \ scriptstyle { L } equal to one half wavelength ( \ scriptstyle { \ lambda / 2 } ).
14.
The current on the Lecher line, like the voltage, forms a standing wave with nodes ( points of minimum current ) every half wavelength.
15.
This so-called " trap " has the effect of truncating the element at the higher frequency band, making it approximately a half wavelength in length.
16.
However, the antenna input impedance is slightly reactive if its length is exactly a half wavelength, and adjusting the length down a bit causes the reactive part to vanish.
17.
This means in differential interferometry one fringe cycle " to + or one wavelength corresponds to a displacement relative to SAR antenna of only half wavelength ( 2.8 cm ).
18.
If the distance traveled by beam A is an odd integer multiple of the half wavelength of light in the film, the beams destructively interfere ( as in the second figure ).
19.
The experiment was sufficiently precise to measure retardations of \ tfrac { 1 } { 6000 } of a half wavelength, " i . e . " of the order.
20.
Further out into the radiative near field ( one half wavelength to 1 wavelength from the source ), the and field relationship is more predictable, but the to relationship is still complex.
