Cramer Screw-Barrel Microscope (circa 1700s)


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Potassium Thiocyanate Movies

Potassium Thiocyanate Video No. 1 - Potassium Thiocyanate crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 9.8 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 (4.11 MB).

Potassium Thiocyanate Video No. 2 - Potassium Thiocyanate crystallization is observed under polarized light illumination at a magnification of 20x in this video. Playing time is 9.8 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 (4.12 MB).

Potassium Thiocyanate Video No. 3 - Potassium Thiocyanate crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 9.8 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 (4.12 MB).

Potassium Thiocyanate Video No. 4 - Potassium Thiocyanate crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 9.8 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 (4.12 MB).

This compound is one of the essential raw materials for the production of a variety of pharmaceutical products, such as antibiotics, thyroid medications, and chemotheraputic drugs. When recrystallized from the melt, potassium thiocyanate will slowly crystallize, forming beautiful dendritic needle-like crystals. Thiocyanates, sodium thiocyanate and ammonium thiocyanate as well as potassium thiocyanate, were developed over 60 years ago.

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