# Field of View

rename
hasanahatesscience's
version from
2015-09-25 11:55

## Section

Question | Answer |
---|---|

equation | objective lens times the ocular lens ex: (100x) x (10x) = 1000x |

field of view LOW POWER | place clear plastic ruler with mm markings on stage, focus under low power. measure diameter of circle you see. count how many mm in FOV. |

1mm is equal to | 1000 micrometres |

equation to determine the FOV for medium power at 100x | FOV under low power x low magnification (10x) ex: 5mm x 10x divided by 100x. THEREFORE 0.5mm = 500 micrometres |

equation to determine FOv under high power with magnification of 400 x | low FOV x loq magnification (10x) ex: (5mm) (10x) divided by 400x = 0.125 mm = 125 micrometres |

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