The same method of "vanishing" can be used to enable a student to talk in technical or scientific terms about a certain subject. Professor Skinner uses as an example the vocabulary transformation from lay to technical on the emission of light from an incandescent source:

1. The important parts of a flashlight are the battery and the bulb. When we "turn on" a flashlight, we close a switch which connects the battery with the (bulb).

2. When we turn on a flashlight, an electric current flows through the fine wire in the (bulb) and causes it to grow hot.

3. When the hot wire glows brightly, we say that it gives off or sends out heat and (light).

4. The fine wire in the bulb is called a filament. The bulb "lights up" when the filament is heated by the passage of an (electric) current.

5. When a weak battery produces little current, the fine wire, or (filament) does not get very hot.

6. A filament which is less hot sends out or gives off (less) light.

7. "Emit" means "send out." The amount of light sent out, or "emitted," by a filament depends on how (hot) the filament is.

8. The higher the temperature of the filament the (brighter, stronger) the light emitted by it.

9. If a flashlight battery is weak, the (filament) in the bulb may still glow, but with only a dull red color.

10. The light from a very hot filament is colored yellow or white. The light from a filament which is not very hot is colored (red).

11. A blacksmith or other metal worker sometimes makes sure that a bar of iron is heated to a "cherry red" before hammering it into shape. He uses the (color) of the light emitted by the bar to tell how hot it is.

12. Both the color and the amount of light depend on the (temperature) of the emitting filament or bar.

13. An object which emits light because it is hot is called "incandescent." A flashlight bulb is an incandescent source of (light.)

14. A neon tube emits light but remains cool. It is, therefore, not an incandescent (source) of light.