Neutrino oscillations are purely quantum mechanical effects that occur over macroscopic time and distance scales. I present the physics of this phenomenon in words, pictures, and analogies rather than mathematics.

1.
K. Nakamura, “Solar neutrinos,” in the 2002 Review of Particle Properties, 〈http://pdg.lbl.gov/2002/solarnu_s005313.pdf〉.
2.
K.
Hagiwara
et al. (The Particle Data Group),
Phys Rev. D
66
,
010001
(
2002
).
3.
F.
Reines
and
C. L.
Cowan
, “
Free antineutrino absorption cross section
,”
Phys. Rev.
113
,
273
279
(
1959
).
4.
R.
Davis
, Jr.
,
D. S.
Harmer
, and
K. C.
Hoffman
, “
Search for neutrinos from the Sun
,”
Phys. Rev. Lett.
20
,
1205
1212
(
1968
).
5.
〈www.nobel.se/physics/laureates/2002/〉.
6.
A. I.
Abasov
et al., “
Search for neutrinos from the Sun using the reaction Ga71e,e),
Phys. Rev. Lett.
67
,
3332
3335
(
1991
).
7.
P.
Anselmann
et al., “
Solar neutrinos observed by GALLEX at Gran Sasso
,”
Phys. Lett. B
285
,
376
389
(
1992
).
8.
C. E.
Waltham
, “
A brief history of heavy water
,”
Physics in Canada
49
,
81
86
(
1993
);
C. E.
Waltham
,
Physics in Canada
49
,
356
357
(
1993
),
and 〈http://xxx.lanl.gov/abs/physics/0206076〉.
9.
The Sudbury Neutrino Observatory, 〈http://www.sno.phy.queensu.ca/〉.
10.
K. S.
Hirata
et al., “
Observation of B8 solar neutrinos in the Kamiokande-II detector
,”
Phys. Rev. Lett.
63
,
16
23
(
1989
).
11.
V. N.
Gribov
and
B. M.
Pontecorvo
, “
Neutrino astronomy and lepton charge
,”
Phys. Lett.
28B
,
493
496
(
1969
).
12.
E.
Sassaroli
, “
Neutrino oscillations: A relativistic example of a two-level system
,”
Am. J. Phys.
67
,
869
875
(
1999
).
13.
J. Bahcall, Neutrino Astrophysics (Cambridge U.P., Cambridge, 1989).
14.
K.
Matsuda
et al., “
Maki-Nakagawa-Sakata parameters from neutrino oscillations, single beta decay, and double beta decay
,”
Phys. Rev. D
64
,
013001
-
1
(
2001
).
15.
K. S.
Hirata
et al., “
Observation of the small νμe ratio in Kamiokande
,”
Phys. Lett. B
280
,
146
152
(
1992
).
16.
Super-Kamiokande, 〈http://www-sk.icrr.u-tokyo.ac.jp/sk/〉.
17.
Q. R.
Ahmad
et al. (SNO collaboration), “
Direct evidence for neutrino flavor transformation from neutral-current interactions in the Sudbury neutrino observatory
,”
Phys. Rev. Lett.
89
,
011301
-
1
(
2002
);
Q. R.
Ahmad
et al., “
Measurement of day and night neutrino energy spectra at SNO and constraints on neutrino mixing parameters
,”
Phys. Rev. Lett.
89
,
011302
-
1
(
2002
).
18.
Y. Itow et al., 〈http://xxx.lanl.gov/abs/hep-ex/0106019〉.
19.
The Super-Kamiokande Collaboration
, “
Evidence for oscillation of atmospheric neutrinos
,”
Phys. Rev. Lett.
81
,
1562
1567
(
1998
).
20.
L.
Wolfenstein
,
Phys. Rev. D
17
,
2369
2374
(
1978
);
S. P.
Mikheyev
and
A. Yu.
Smirnov
,
Sov. J. Nucl. Phys.
42
,
913
917
(
1986
).
21.
W. C.
Haxton
and
B. R.
Holstein
, “
Neutrino physics
,”
Am. J. Phys.
68
,
15
32
(
2000
).
22.
N. Jelley (private commmunication); M. G. Bowler, SNO internal report, 2002.
23.
B. Kayser, “Neutrino physics as explored by flavor change,” in the 2002 Review of Particle Properties, 〈http://pdg.lbl.gov/2002/neutrino_mixing_s805.pdf〉.
24.
KamLAND, 〈http://kamland.lbl.gov/〉 and
K.
Eguchi
et al. (KamLAND collaboration),
Phys. Rev. Lett.
90
,
021802
-
1
(
2003
).
25.
H.
Burkhardt
,
J.
Lowe
,
G. J.
Stephenson
, Jr.
, and
T.
Goldman
,
Phys. Lett. B
566
,
137
141
(
2003
).
26.
J.
Beacom
and
N. F.
Bell
, “
Do solar neutrinos decay?
,”
Phys. Rev. D
65
,
113009
-
1
(
2002
).
27.
Wilkinson Microwave Anisotropy Probe (WMAP), 〈http://map.gsfc.nasa.gov/m_mm.html〉.
28.
P. Vogel, “Limits from neutrinoless double-beta decay,” in the 2002 Review of Particle Properties, 〈http://pdg.lbl.gov/2002/betabeta_s076.pdf〉.
29.
M.
Goldhaber
,
L.
Grodzins
, and
A. W.
Sunyar
, “
Helicity of neutrinos
,”
Phys. Rev.
109
,
386
389
(
1958
).
30.
L. J.
Boya
, “
Neutrino mass and helicity
,”
Am. J. Phys.
68
,
692
693
(
2000
).
31.
G.
Weinreich
, “
Coupled piano strings
,”
J. Acoust. Soc. Am.
62
,
1474
1484
(
1977
),
〈http://www.speech.kth.se/music/5_lectures/weinreic/weinreic.html〉;
F. L.
Curzon
, “
Classroom simulation of the coupled motion of piano strings
,”
Am. J. Phys.
52
,
137
139
(
1984
).
32.
C. E.
Gough
, “
The theory of string resonances on musical instruments
,”
Acustica
49
,
124
141
(
1981
).
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