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Video Talk by Daniel Fletcher: Lenses and Image Formation

Light microscopes use lenses. The basic properties of light, how light interacts with matter, the principles behind refractive lenses and how lenses form (magnified) images will be introduced in this iBiology talk.


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About iBiology

iBiology ( is a collection of open-access online videos by scientists about research and discoveries that cover a wide variety of life science subjects. iBiology has produced over 80 videos by the world's leading scientists including seminars about research in fields from ecology to biophysics, a 65-video course on light microscopy, and over 90 short talks on topics such as professional development, careers, science and society, and education. iBiology is funded by NSF, NIGMS, and HHMI, and supported by the ASCB and UCSF.

YouTube video by iBioEducation, November 2013