Question about Heisenberg's Uncertainty Principle

It is the nature of reality. The best way to determine that is my the whole process of wave mechanics. If it was simply a limitation based on what we had to measure, you would not see interference diffraction. You would narrow frequency bands of light given off by florescent lights... These type of effects not only require that you can't measure the precise values but the precise values literally do not exist. Try researching "Hidden Variables" to find out how we know this is a nature of reality, not just an artefact of measurement.

HUP doesn't only address the position/velocity of electrons, but all particles. The more you want to know about a particle, the higher energy you need to hit it with, thus as you've already noticed, changes the very information you wish to gather.When the HUP was postulated, they had no idea that electrons behaved the way they do.

I'm not sure.

Subatomic particles are very bizarre. Take the electron for instance. Its location in space is not measured as a specific location, it is given as basically a percentage. For example you can state with 100% certainty that your toilet is in your bathroom. However, if you pretend your house is an atom and your toilet an electron there may be only a 50% chance that it's in the bathroom. There could be perhaps a 10% chance that it's in the kitchen, or in the attic, or behind the TV in the living room. Also the electron may be where you find it only because that's where you looked for it. If you find the toilet/electron in the attic it may have been in your bedroom closet had you not looked in the attic. If we look at a planet orbiting the Sun we can measure its exact location and we can predict where it will be in the future based on our measurements. What the uncertainty principle basically says is that if the planets were subatomic particles the more closely we measured one facet of its movement the less certain we could be about the others. For example we may be able to pinpoint exactly where the planet is in relation to the Sun, but then we would not be able to determine its exact speed, or orbital inclination, or whatever else. Also when you're making measurements of particles, unlike planets, just looking isn't enough. The act of measuring itself can affect the movement of whatever you're measuring. When a police radar measures the speed of a car it does so by shooting radio waves at the car. Those radio waves strike the car and affect its future movement. In the large scale world we live in it doesn't matter but on a subatomic scale it does.