Strings String

Can someone explain to me the following things in simple words?

1) Negative energy [Casimir effect]
2) Frame dragging
3) Relativity of Simultaneity
4) Black Strings [String theory, fifth dimension, black holes and all that stuff]
5) Kerr Black Hole

As simple as you can, please :P
Oh, never mind. Thanks for the help anyway. :)

1- Casimir effect is typically called "zero point energy", not negative energy. It is associated with conductive plates (attractive) and *very* small clearances, essentially deriving a separating or attractive force based on energies associated with light wavelengths comparable to the plate separations. Fully repeatable, just not much more than mumbo-jumbo for "underlying causation". Very likely just work-function related for the metals involved...

2- Spacetime produced by a rotating mass center... also rotates. So a gyroscope pointing "north" in a perfectly circular orbit (the circular bit just to weed out other effects) as Earth rotates, very slowly points in some other direction, then later some other direction still, finally pointing back north after a full rotation, and repeating.

3- The fact that two spatially-separated events can only be simultaneous for a very small class of observers, and all others will see one event occur before the other.

4- Never heard of "black strings". String theory is on very shaky ground. None required to describe black holes, certainly. 5th dimension is usually charge, at least for Kaluza-Klein relativity, a compactified dimension. No other standards I know of for "what dimension is number 5".

[EDIT: "not simple enough"

1- snake oil, stay away
2- spinning bodies, drag space around with them
3- everyone has their own correct opinion, and their own perspective
4- snake oil, stay away
5- a spinning, uncharged, black hole. Concept first mapped by a scientist / mathematician named Kerr, strangely enough
]

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