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Posts that relate to the Keyword: polarization


Time-lapse Video of Vitamin C Crystallization

Found in: Videos | Date: September 5, 2010 |

The video is a time lapse of crystallizing Vitamin C.


Papaya (Carica papaya) in Polarized Light

Found in: Observations and pictures | Date: January 31, 2009 |

A piece of papaya was squeezed between the microscope slide and cover glass. The sample was observed in polarized light.

Increasing Contrast using Optical Methods

Found in: Microscopy Basics, Theory | Date: January 31, 2009 |

Many microscopic specimens are either very thin or transparent or lack color. They lack contrast and can not be easily seen in bright microscope light. In many cases it is not possible or desirable to chemically stain the specimens. In this case, optical techniques become necessary to enhance contrast.

Vitamin C under polarized light.

Vitamin C (Ascorbic Acid) Crystals

Found in: Observations and pictures | Date: January 24, 2009 |

Both images depict Vitamin C (Ascorbic Acid) crystals under low magnification using crossed polarizing filters.

Simple Polarization Microscopy

Found in: Techniques | Date: December 16, 2008 |

It is not necessary to purchase a dedicated polarizing microscope to observe specimens in polarized light. A pair of linear polarizing filters is enough.

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