A primary key is the answer. =)
An active heat sync will keep a computer cool and basically cool the CPU and processors. A passive heat sink will only cool the CPU and whatever else it needs to cool when the CPU actually NEEDS to be cooled. I am not sure if this is all correct but I know about basic heat syncs and from my understanding this is right.
The focal point is where the eye is drawn to in a photo or image.
To further your employment opportunities
Is this a question or answer? Either re-post correctly or ignore this.