Some people discover they become spontaneously invisible and wonder what's going on.  Wouldn't you? They hadn't planned it, or didn't think they had.  Shifting frequency, even unconsciously, has rather curious effects.  You may not even know your own strength!

If you or someone you know has a habit of vanishing and reappearing in weird ways, this sounds like the creation of a light-absorbing, free-electron cloud around the self.  Imagine, you could be a master of advanced physics and not realize it! Some people vanish and don't even sense it.  Life is all about self-discovery.  Inner growth is nothing to fear.

Since some kind of focused, mental thought process must be used to generate the cloud around the self, all the more reason to take steps to raise your awareness about what you're thinking and when. Learning about your sleeping dreams can shed new light. 

Now, invisibility as an idea calls into question widespread understanding of what is physically possible.  If you do experience this state,  you value non-conformity and evolve toward heightened psychic abilities. You also recognize reality is grounded in your matrix of time and space.  You will not always be in a mindset or attitude compatible with other people around you.  To them, you will seem invisible, even before you literally disappear. 

Its meaningful to reflect on why you desire to be invisible or, why you think you already disappear from view.  Should it matter that people notice or not?  What do your reactions teach? To explore thoughts, feelings and expectations for invisibility is very revealing.

Remember, you live the life you think about.  You get precisely what you expect, as interpreted by a subconscious energy level.  You can research paranormal history and delve into theory behind electromagnetic fields.  Yet, you learn most by getting-to-know your true self. More people fear themselves than bravely venture to where answers lie.