Going Above and Beyond: Dependence and Military Coalition Participation

New ideas for a transducer layout in a spherical GW antenna

“…Let us stress once more that equation (6. 16) explicitly shows that at most 5 pairs of modes, of frequencies ω c± , couple strongly to quadrupole GW amplitudes, no matter how many resonators in excess of 5 are mounted on the sphere. The tidal overlap coefficients a 2n can also be calculated, and give for the first two harmonics [23] a 12 R = 0.328 , a 22 R = 0.106 (6.17)…”

“…But GW excitations are extremely weak [13], and so a suitable readout system must be added to the sphere in order to monitor its motions and quantitatively assess their magnitude and physical significance. In cylindrical bars, current state of the art technology is based upon resonant transducers [14][15][16][17][18]. A resonant transducer consists in a small (compared to the cylinder) mechanical device possessing a resonance frequency accurately tuned to that of the cylinder.…”