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University of Colorado
University of Colorado: Ph Et Interactive Simulations: Stretching Dna
Explore stretching just a single strand of DNA using optical tweezers or fluid flow. Experiment with the forces involved and measure the relationship between the stretched DNA length and the force required to keep it stretched. Is DNA...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Optical Tweezers and Applications
Did you ever imagine that you can use light to move a microscopic plastic bead? Explore the forces on the bead or slow time to see the interaction with the laser's electric field. Use the optical tweezers to manipulate a single strand of...
Science Buddies
Science Buddies: Testing for Bias in a Photo Lineup
You may have read about criminal cases where innocent people have been wrongly convicted of a crime. Sometimes, modern DNA analysis techniques have provided the evidence to exonerate these innocent people. In many cases, mistaken...