625395.fig.003a
(a)
625395.fig.003b
(b)
625395.fig.003c
(c)
Figure 3: (a) Superimposition of the curves for 10 successive measurements on 2 mm diameter glass beads, (b, c) evolution of the measured and :  W/mK with 0.001 W/mK standard deviation,  W/mK with 0.004 W/mK standard deviation.