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August 24, 1949
Resonance Frequencies [double underline] Sn^115 (6250 -> 6225 KC)
| Time | Marker Dist. | Res. Dist. | Marker | Res. Frequency | [fancy]v - [average]v = [Greek letter delta]v | ([delta]v)^2 |
|---|
| 9 | 69.8 | 38.7 | 1 | 6236.2 KC | -0.2 | 0.04 |
|---|---|---|---|---|---|---|
| 60 | 69.0 | 37.0 | 1 | 6236.7 | +0.3 | 0.09 |
| 106 | 69.6 | 37.4 | 2[crossed out] 1 | 6236.7 | +0.3 | 0.09 |
| 328 | 69.0 | 38.2 | 1 | 6236.3 | -0.1 | 0.01 |
| 378 | 69.1 | 39.0 | 1 | 6236.0 | -0.4 | 0.16 |
| 432 | 70.0 | 41.0 | [illegible] | Av + 6236.4 KC ([fancy][average]v) + 0.3 | [square root of the average]([delta]v)^2 = 0.3 |
Na^23 (5050 -> 5025)
| Time | Marker Dist. | Res. Dist. | Marker | Res. Frequency | [fancy]v - [average]v = [Greek letter delta]v | ([delta]v)^2 |
|---|
| 27 | 116.0 | 24.0 | 1 | 5044.9 | +0.3 | 0.09 |
|---|---|---|---|---|---|---|
| 75 | 114.9 | 24.0 | 2 | 5044.7 | +0.1 | 0.01 |
| 161 | 115.4 | 25.5 | 1 | 5044.6 | 0.0 | 0 |
| 343 | 115.0 | 25.1 | 2 | 5044.5 | -0.1 | 0.01 |
| 396 | 115.0 | 25.1 | 2 | 5044.5 | -0.1 | 0.01 |
| [fancy][average]v) = 5044.6 KC + 0.2 | [square root of the average]([delta]v)^2 = 0.2 |
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V ( Sn 115 ) = 6236.4 ( 1 + 5X10-5 )
V ( Na 23 ) = 5044.6 ( 1+ 4X10-5 )
V ( Sn 115 ) = 6236.4 ( 1+ 6.2 x 10-5 ) V ( Na 23 ) = 5044.6
= 1.23625 ( 1+ 6.2 x10 -5 ) = 1.23625 (1+0.00006 ) = 1.23625 + 0.000076
Data obtained by WP
V (Sn 119 ) = 1.4090 + 0.0005 V ( Na 23 )
V ( Sn 117 ) = 1.3464 + 0.0004 V ( Na 23 )
V ( Sn 119 ) = 1.0465 + 0.0003 V ( Sn 119 )
M ( Sn 117 ) = - 1.0000 + 0.0009 MN M (Sn 119 ) = - 1.0466 + 0.0009 MN
24
August 24, 1949. A search coil was made In studing the shillding effect of metallic to filing which were coated with SnO [?????????} by working with ver dilute HNo3
Measured the search coil in Q-meter
C1 reasonance freq.
30 mmt 25.5 MC 6. 18.5 MC 10 [-----?] of [enanieded?] wires of 5 mm dia.
L ( C+C1 ) = 1/4 tt 2 f2 L ( C + 30 ) = 3.9 x 10-5 L ( C + 60 ) = 7.4 x 10-5
C+60 7.4 = 1.9 C+ 30 3.9 = "
C + 60 = 1.9c+ 57 0.9c= 3 C=10/3= 3.33mmf L= 1.17 [???]
25
RMS (a) ------ empty tube induced netage = 0.012v To vaccum tube volhuster (b) -------- filed this filmigs, RMS induced voltage = 0.011v
(c) ---- coil surrounded by a small copper of about 0.2mm Hosh induced netage = 0 Conclusion Nethough the the zie of this filnig in large the shielding effect is very small Bloch: Perhaps the tin filing were over oxidized that we were working with the oxide rather than tin metal. Experiments must be repeated with tin metal. 8/26/49 repeated with metallic tin. No shielding effect.
