sphere

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From the sample (d) results it can be seen that the grains are spheral, and the crystal size of the sample is rather small (about 166 nm).
Immovably fixed to the plate reflective spheral marker 8 was used to capture motion of the plate, while motion of the part on the vibrating plate was tracked by means of the reflective marker 9, attached to the part.
The cloud-rack, the sunrise and sunset glories, rainbows, and northern lights are not quite so spheral as our childhood thought them; and the part our organization plays in them is too large" (1983d]: 1116); "Nature, as we know her, is no saint .