" Semi-circadian rhythms of spontaneous photon emission from wheat seedlings germinated and grown in a constant environment (darkened chamber) were found to be synchronized with the rhythm of the local gravimetric (lunisolar) tidal acceleration. Time courses of the photon-count curves were also found to match the growth velocity profile of the seedlings. ... Using fast Fourier transform, the photon-count data revealed periodic components similar to those of the gravimetric tide."
Last modified on 20-Mar-16