This color educational film “The Penetrating Eye” is about the scanning electron microscope (SEM). The film was produced by Eli Lilly, a leading medical technology company, and made by Wexler. Portions of the film were likely shot at the Donner Laboratory at the University of California, Berkeley, under the supervision of Thomas L. Hayes, Ph.D. The SEM is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample. Copyright 1970.

Opening: a skeleton x-ray. A woman. Scanning electron microscope. Title: The Penetrating Eye (:16-1:44). A woman, Anna, in a lab coat looks through a microscope. Microscopic image, when using a scanning electron microscope, the image is more in a three dimensional way. Red blood cells appear closer. A man takes a blood smear on a slide and puts into a machine uses it. The slide is inserted into an airlock chamber. Another door is looked at and opened. Voltage on a machine is turned up. A result of the new imaging is shown (1:45-3:57). The man looks at the enchanted red blood cells. Magnification is turned up for enhancement. The red blood cells are looked at in an enhanced photograph. Enhanced red blood cell. Target cell is looked at. Red cells (3:58-6:03). Enhanced red cells. Ion-etched red blood cells. Other enhanced cells. Nerve Tissue under the scanning electron microscope. Nerve fiber and sensory cells. Sensory hairs enhanced. Ann’s face looks with her eyes (6:04-7:47). Human cornea seen enhanced through the scanning electron microscope. A rabbit cornea infected with herpes is looked at enhanced. A diabetic retina is looked at. Micro-aneurysm. A living eye. A flour beetle moves around. The flour beetle is put under the SEM and the eyes and pieces of the body are enhanced (7:48-10:05). A man sits down at the SEM. A light microscope is shown in animation and explained as to how it works. Protein crystals. Electron microscope is shown in animation and explained as to how it works. Red blood cells as seen through regular electron microscopes. A wire mesh on a finger. Through a SEM, the wire mesh is clearly woven material and in great detail. The jaw of a rotifer is seen through the SEM. The SEM is shown in animation and explained as to how it works. Beams of electrons and radiation are shown. The movement of beams. The scan generator (10:06-14:55). Scanning beam at work. The beam can magnify up to twenty times. A penny is shown being magnified. A woman sorts through some enhanced photographs. N.Y. Times is magnified, followed by a grain of pollen, syphilis, platelet, tooth enamel, and dental plaque. Bacteria from a legion, e. coli (14:56-17:48). E. coli starts to change. membrane collapses. Cancer cells from breast cancer. Tissue from a marine mollusk. Staphylococci. Bull sperm enhanced (17:49-19:33). Parts of the SEM. An x-ray of a head. A microscope at work. Electron microscope shows DNA. SEM shows the retinas of a salamander (19:34-20:31). End credits (20:32-21:19).

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