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Construction and Performance of a Temperature‐Gradient Bar and Chamber
Author(s) -
Barbour M. G.,
Racine Charles H.
Publication year - 1967
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1933746
Subject(s) - bar (unit) , temperature gradient , humidity , materials science , atmospheric temperature range , linearity , range (aeronautics) , mechanics , environmental science , composite material , physics , thermodynamics , meteorology , electrical engineering , engineering
An inexpensive temperature—gradient bar and chamber for use in studies of seed germination and root growth is described. Aluminum troughs and a bar, surrounded by insulation and heated and cooled at their ends by water baths, form the floor of a chamber. A plexiglass top permits illumination by overhead light banks. The temperature gradient may be adjusted to any range within the limits of 10° and 50°C. The linearity and stability of the bar gradient, and the presence of temperature and humidity gradients in the chamber air above the bar, are discussed.