抄録
The orientational fluctuations in a nematic liquid crystal were successfully observed with a high-speed video camera. From the series of images obtained, first the Fourier transformation of them was made and then the time correlation function at each wave number was calculated. The time correlation function showed an exponential decay and the inverse of the relaxation time was a linear function of the square of the wave number. Furthermore, it can be seen that there is an increase in the inverse of the relaxation time as the cell thickness is decreased. These results are qualitatively in agreement with the continuum theory.
