Simple Italian Microscope (circa 1686)


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Tums® Movies

Tums® Video No. 1 - Tums® crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 10.8 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (4.54 MB).

Calcium carbonate is the active ingredient in Tums® and other over the counter antacids. The compound is involved in neutralizing stomach acid with the Ca++ portion mostly absorbed by the body. This also makes TUMS®, and other antacids based on calcium carbonate, a valuable source of dietary calcium.

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