Question about Heisenberg's Uncertainty Principle

It's really a statement of both of those facts, although it is not limited to photons nor electrons. The knowledge contained in the second statement is affected by the behavior of light and matter as described in the first. In fact, knowledge in general is affected by this behavior. Knowledge is limited by what we can see, and what we can see is limited by how things behave at the quantum level of reality, and to a lesser extent at the macro level of reality that we are accustomed to.

ADDED: I agree with Oklatonola that an electron cannot be in 2 places at once, but it is perhaps a bit misleading - in the following sense. The electron can in fact fall within a geometric cloud of probability that does not define a single location, and it may be that that is in fact the best we can do in terms of our knowledge of its position, based on whatever else we may be happening to look at. In such a case, it is irrelevant to say that it lies at a single location within that cloud of probability; it in fact does not really exist in any meaningful way at one single location.

Electrons cannot be two place at once. You are confusing two different things, the Heisenberg Uncertainty Principle and entanglement. It's the first one. When you measure something you disturb and change the system by measuring something in the system. It's a quantum mechanics thing. Quantum mechanics mathematics is mind-blowing enough when you don't confuse yourself even more by including something different and adding two confusing things together. All you get is the product of more confusion when you do that.