Lynn Poole shows photos and demonstrations from past programs and poses questions for viewers on the topics of skin grafting, atoms, electroencephalography, x-rays, and diffraction grating. Afterwards he gives the answers with explanations. Next a series of six simple experiments are performed, questions are asked about each, and answers are given afterwards. The experiments' concepts include molecular model identification, cold steam power, surface tension disruption, carbon dioxide production, and interaction of acetone with acetate rayon.

This program deals with electroencephalography, recording impulses from the brain. Dr. Walker explains the parts of the brain and a diagram of nerve cells discharging impulses. Lights on a model of a human head indicate brain activity under differing conditions. Dr. Marshall demonstrates how eighteen electrodes are attached to the scalp to record brain waves during an EEG (electroencephalogram) and notes that this is simply a diagnostic tool. He explains the EEG machine and shows the graph produced by the output of its amplifiers. Dr. Marshall then explains what constitutes a normal brain wave based on comparing the voltage and rhythm of a large sampling of medically normal people. Dr. Walker compares several EEG records with differing patterns, and Dr. Marshall explains the significance of the differences, including one lengthy EEG from a patient having an epileptic seizure.

Sleep is a complete cessation of movement and a depression in sensitivity to stimulation. It is initiated by internal bodily functions and not by external forces. A person who is asleep is able to be aroused. There are various levels of sleep, from deep sleep to drowsiness. Eletroencephalography can show the effects of patterns of sleep. Research in sleep and the lack of sleep are ongoing.