BIOD 171 MICROBIOLOGY LAB 1-9 NOTEBOOK PORTAGE LEARNING
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BIOD 171 MICROBIOLOGY LAB 1-9 NOTEBOOK PORTAGE LEARNING ▪ Too dark= low visibility • May miss sample ➢ Magnification ▪ Working w small tissue or bacteria • Start at higher mag.... ▪ Uncertain? • Start on lowest objective as possible ➢ [Power of object]] x [power of eyepiece] = Total magnification ▪ If a cell is 15 mm in diameter, using a 40x objective & 5x eyepiece the cell will now appear to the eye 200 times larger (200x) or ~3000mm in diameter ❖ How to Find Sample ➢ Know where stage is (control course knob-lower/raise stage) ▪ Start with lower & don’t hit glass w lens ➢ Slowly raise until comes into field ➢ Slowly adjust until clearer image ➢ Rotate ocular to use pointer to point to sample [Show More]
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