Felux, the Light which Opposes

Read this and all of your questions shall be asked:

Meaning of life - Wikipedia, the free encyclopedia

Let there be light - Wikipedia, the free encyclopedia

 So, just how bright are you anyway?   Lux - Wikipedia, the free encyclopedia 

How dense?Luminous flux

Know why?interference 

Java Demonstration of Lloyd's Mirror  (Play with wave interference patterns) 

Freshly coined word of the day:  "Felux", meaning reciprocal of light - that which causes the dark interference patterns as shown in the above demonstration is not "darkness" per se, but rather it is an opposing light phase which causes destructive interference.