The Notebook Came Back

Short follow up on my notebook story (notebook).

Well it was laying all that time under the bookcase in a room that I lived in for the last month.

Well who would have thought to check there?

Anyway, I got it back yesterday evening. And I am very happy its back ;)

quantum trouble

Nothing more precious than a cup of coffee on a days spend in the library. 

Especially when you have to struggle with tough stuff as an explanation of our existence, of an existence of our universe.

Anyway, during last lecture from Quantum Mechanics we heard depressing news. I cannot stop thinking about it.

When we look at the world classically we can make statements that it has zero energy, in Quantum world there is always some energy. 

Systems always oscillate at least a bit. So now if we have a space and even it seems empty then it will have infinite amount of those small energies. 

We also know that the general relativity implies that all the forms of energy gravitate, and if we have a infinite energy then we have infinite mass which leads to infinite gravity. 

And BOOM! 

If that was true then our universe would collapse in an instant.

This collapse is not a problem, because well it hasn't happened.

The problem is that I am studying a theory that we successfully use in everyday life (all modern technology was possible because we understood quantum mechanics). But yet same theory cannot completely explain why our universe is still around.

I might have got it all wrong, but it bothers me a lot.

Well next week will bring me probably something new to worry about, since our universe if full of mystery.

mysterious notebook

My advanced quantum mechanics notebook with notes from 2 weeks of lectures went missing.

I have checked everywhere at home and it is not there.

Yes, I have checked my backpack too.

Nothing.

Last night I gave up, went to bed. Had a lot of nightmares... just kidding.

In the morning I went to the library and asked if maybe I left it there.

My conversation with librarians:

L: "How big is your notebook?", "Like this?". Showing me address booklet.

Me: "No, it is bigger with notes from lectures."

L: "Like this?". L asked while showing me A4 format.

Me: "Well, I do not know. Maybe like this, or maybe smaller."

L: "Is your name on it?"

Me: ”Well, I do not really know. I do not remember."

L: "Do you know how it looks? Yellow, green ...”

Me: "Well, I really do not remember, but I know I’ve lost it. I do not know even where I could have left it, I've just thought maybe in the library?"

L: "So maybe you know when you lost it?"

Me: "I am not sure, maybe last week because I had it on last Wednesday during my lecture, but I do not really know."

Librarian makes a phone call.

L: "If we have found it we gave it to Information desk, go there and ask."

Me: "Yes, thank you."

I was walking away.

L: "But, do you remember at least what is written in your notebook, ha-ha."

Me: "Ha-ha, well this I actually think I do."

So, now I just have to go and have the same conversation with people at the Information desk.


Update: September 19th 2013

I still haven't found it but here is how it looks like. How could I have forgotten that it has periodic system on?
Anyway, it should be now way easier to find it.