Context: Most light bulbs have either clear or coated glass. The coated glass bulbs have a white powdery substance on the inside called kaolin. Kaolin, or kaolinite, is a white, chalky clay in a very fine powder form, that is blown in and electrostatically deposited on the interior of the bulb. It diffuses the light emitted from the filament, producing a more gentle and evenly distributed light. Manufacturers may add pigments to the kaolin to adjust the characteristics of the final light emitted from the bulb. Kaolin diffused bulbs are used extensively in interior lighting because of their comparatively gentle light. Other kinds of colored bulbs are also made, including the various colors used for "party bulbs", Christmas tree lights and other decorative lighting. These are created by coloring the glass with a dopant; which is often a metal like cobalt (blue) or chromium (green). Neodymium-containing glass is sometimes used to provide a more natural-appearing light.

Question: What is the powdery substance in coated glass light bulbs?
Answer: kaolin

Question: How is kaolin placed inside a light bulb?
Answer: blown in and electrostatically deposited

Question: What is the effect of a kaolin coating on the light cast?
Answer: a more gentle and evenly distributed light

Question: How are Christmas colored light bulbs created?
Answer: by coloring the glass with a dopant

Question: How does kaolin create a more gentle light?
Answer: It diffuses the light emitted from the filament

Question: What type of glass does a light bulb not have?
Answer: Unanswerable

Question: What does not coat the glass bulb?
Answer: Unanswerable

Question: What is a black, chalky clay on the inside of a glass bulb?
Answer: Unanswerable

Question: What does not produce a gentle ans evenly distributed light?
Answer: Unanswerable

Question: What is sometimes used to provide a more artificial appearing light?
Answer: Unanswerable