1. You add a Lamp by pressing the space bar and clicking on Add/Lamp.

2. If you increase the energy of a lamp the light output of the lamp gets brighter. Objects will look

lighter.

3. The RGB sliders set the color output of a lamp.

4. If a light is on Layer 3 it will have NO effect on objects in any other layer.

5. 5.Blender is equipped with 5 lamp types. They include the following.
   Lamp
   

   Sun

   Spot

   Hemi

   Area

6. The Lamp type is Blender's basic light. It works very much like a real light bulb, shining light in

all directions. The standard Lamp can cast shadows using ray tracing, a very accurate technique

that produces sharp shadow edges.

7. The sun type lamp is a "directional light". This means that all shading from this lamp appears to

come from parallel light rays, as though they were emitted from an infinitely distant, infinitely large

object. Sun lamps can only cast shadows using raytracing.

10. The spot lamp is very much like a real world spot light. It illuminates objects within a

controllable cone shaped area. It uses buffered shadows. Buffered shadows are softer than

ray tracing shadows but faster to render than area lamp ray tracing.

11. The Hemi lamp is a little different than other light types, as it does not have any form of

shadow calculation. It functions as a big illuminating half sphere surrounding the scene. Hemi

lamps are useful for giving a scene an overall color tone.

12. The Area lamps are the most realistic lights in Blender, but they have the drawback of

involving more in-depth calculations during shadowing, leading to longer render times.