The Measurement of Plant Elongation Rates by Means of Holographic Interferometry: Possibilities and Limitations

Abstract

Holographic interferometry is a method of measuring very small movements and deformations of solid, opaque objects. It would appear at first sight to be an ideal technique to use for the monitoring of plant elongation. This paper examines the possibilities of this application of holography, reports on the problems of using living plants as holographic subjects, and suggests that the technique may have some limited application in this field in measuring growth rates over very short times.