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REFRACTIVE INDEX OF A LIQUID BY CRITICAL ANGLE METHOD
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The apparatus consists of a metal bridge 130x90x80mm, fitted with anti-slip rubber edging strips. The air cell holder is attached to a large knob & scale. Graduated from 0? to 360?. The air cell takes the form of two flat glass plates, 50x50mm; arranged parallel & at a small distance apart in a sealed masking frame. Liquid under investigation is contained in a transparent -Perspex tank. Supplied with tank.
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