Mr.Wizard's World

Season 2 Episode 4

Episode 4

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Aired Unknown Dec 03, 1984 on Nickelodeon
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Episode 4
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FIBER OPTICS - A pin is attached to the end of a pencil which is held under water in a glass. Michael looks up at the under surface of the water to see a mirror image. The surface underneath the top of the water acts like a mirror. UNFLIPPABLE PAPER - Mr.Wizard folds a piece of stiff paper to form a bridge. He challenges Jason to blow under the paper and flip it over. EGG & SPERM - This is an egg from a female sea urchin covered with sperm from a male. Scientists use the sea urchin to study the process of fertilization. LYCOPODIUM - Mr. Wizard asks Tanis to reach into an aquarium without getting her hand wet. her to do it again without getting her hand wet. EARTH & SUN - Jason looks at a diagram of the Sun and the Earth. At one point the Earth is 94 million miles from the Sun. At another, it's 91 million miles away. Jason assumes that the Earth is closer to the Sun when it's summer. Mr.Wizard tells him he's wrong and right at the same time. KITCHEN CHROMATOGRAPHY - Leila is shown samples of paper chromatography: a technique scientists use to take chemicals apart based on the fact that liquids pass through materials at various rates and have different attractions for certain chemicals. COLEUS LEAF - This is part of a plant and because it’s so colorful, you might think it’s a flower. But it’s not. It’s the edge of a leaf. While most leaves are green, some are highly colored. Exactly how the colors are produced and how they help the plant is unknown. A scientific mystery in the color of the leaves of the coleus. STEAM ENGINE - At a tea kettle of boiling water, Mr. Wizard points out that they are going to make it into a steam engine. SOLAR PROPELLER - Mr.Wizard demonstrates to Tanis how a solar propeller works.has her place her hand over the small circle in the center of the propeller. CARD & BOTTLE - Mr.Wizard does an experiment with Arlette relating to water and air pressure.moreless
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