1. Are there any differences in the electric light globes on the market? If so, in what ways do they differ? How do these differences affect the lighting power of the globes?
2. What influence has the size and decoration of the room on the brilliancy of light from a given lamp?
3. How should the light in a living-room be distributed?
4. What are the differences in direct, semi-direct and indirect lighting?
5. What is the purpose of a mantle for a gas or kerosene lamp?
6. What is the difference in burners to be used with and without mantles?
7. How is the light from a lamp measured?
8. Which lamp gives the greatest candle power of light for the amount of fuel used—the one with or the one without a mantle?