Question

where is hollow glass or glass microsphere used​

Answer 1

Explanation:

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Hollow Glass Microspheres (HGMS) are near perfect spherical shapes of thin walled glass bubbles that are approximately 50 microns in size. The glass type is amorphous and can come low purity or high purity (Trelleborg) grades.

Answer 2

Explanation:

The reduction in the density of the thermally treated glass particles depicts that the particles are hollow. These hollow particles can be used as lightweight fillers in syntactic foam or used as hydrogen gas storage in the pharmaceutical industry [3].