Supercooling of water can be easily studied with a simple apparatus suitable for the student laboratory. We describe such an apparatus and its capabilities. The parameters influencing supercooling include the initial water temperature, as well as the type and temperature of the chilling medium. We correlate the occurrence of supercooling with the ability of the chilling medium to promptly nucleate ice; if it nucleates promptly, the layer of ice crystals formed on the boundary will initiate freezing of the bulk water without supercooling. If the chilling medium is unable to nucleate ice promptly, ice nucleation is delayed and the water supercools. Students can study and compare supercooling of distilled and natural water. Even quite dirty river water may be supercooled by as much as 5 °C.

1.
D. G.
Farenheit
, “
Experimenta & observationes de congelatione aquae in vacuo factae
,”
R. Soc. London Phil. Trans.
33
,
78
84
(
1724
).
2.
J.
Black
, “
The supposed effect of boiling upon water, in disposing it to freeze more readily, ascertained by experiments
,”
R. Soc. London Phil. Trans.
65
,
124
129
(
1775
).
3.
B.
Vonnegut
, “
The nucleation of ice formation by silver iodide
,”
J. Appl. Phys.
18
,
593
595
(
1947
).
4.
N. E.
Dorsey
, “
The freezing of supercooled water
,”
Trans. Am. Phil. Soc.
38
,
247
328
(
1948
).
5.
S. C.
Mossop
, “
The freezing of supercooled water
,”
Proc. Phys. Soc. London, Sect. B
68
,
193
208
(
1955
).
6.
R. R.
Gilpin
, “
The effects of dendritic ice formation in water pipes
,”
Int. J. Heat Mass Transfer
20
(
6
),
693
699
(
1977
).
7.
F. C.
Brown
, “
The frequent bursting of hot water pipes in household plumbing systems
,”
Phys. Rev.
8
,
500
503
(
1916
).
8.
D.
Auerbach
, “
Supercooling and the Mpemba effect: When hot water freezes quicker than cold
,”
Am. J. Phys.
63
(
10
),
882
885
(
1995
).
9.
A.
Gholaminejad
and
R.
Hosseini
, “
A study of water supercooling
,”
J. Electron Cool. Therm. Cont.
3
,
1
6
(
2013
).
10.
S.
Harrington
,
P.
Poole
,
F.
Sciortino
, and
H. E.
Stanley
, “
Equation of state of supercooled water simulated using the extended simple point charge intermolecular potential
,”
J. Chem. Phys.
107
(
18
),
7443
7450
(
1997
).
11.
M.
Jeng
, “
The Mpemba effect: When can hot water freeze faster than cold?
,”
Am. J. Phys.
74
(
6
),
514
523
(
2006
).
12.
J. D.
Brownridge
, “
When does hot water freeze faster than cold water? A search for the Mpemba effect
,”
Am. J. Phys.
79
(
1
),
78
84
(
2011
).
13.
Aircraft Icing, U. S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data and Information Service,
1985
.
14.
V. F.
Petrenko
and
R. W.
Whitworth
,
Physics of Ice
(
Oxford U. P.
,
Oxford UK
,
1999
).
15.
Addest Technovation, <http://www.addest.com>.
17.
L. C.
Burmeister
,
Convective Heat Transfer
, 2nd Edition (
Wiley-Interscience
,
New York, N. Y.
,
1993
), p.
107
.
18.
M.
Kandula
, “
Effective thermal conductivity of frost considering mass diffusion and Eddy convection
,”
Spec. Top. Revs. Por. Med. Int. J.
1
(
4
),
321
336
(
2010
).
19.
B. C.
Christner
,
C. E.
Morris
,
C. M.
Foreman
,
R.
Cai
, and
D. C.
Sands
, “
Ubiquity of biological ice nucleator in snowfall
,”
Science
319
,
1214
(
2008
).
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