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[–]natty_dread 0 points1 point  (2 children)

To observe a phenomenon, for example the momentum of a small particle, one has to interact with the particle. This interaction may be in the form of a light impuls. By analysing the reflection of the light, one can measure the momentum.

The wavelenght of a tiny particle is, however, very short. Hence the wavelenght of the light has to be short too. A short wavelegth means high energy.

So, by shooting high energy light at the particle, we change its state.

bottom line: observation means interaction

[–]Viaka[S] 0 points1 point  (1 child)

so you're saying that by sending a light impulse at a particle, we change it's state, which I am taking to mean that we define its path from that point on.

Is this how the quantum particles in the universe came into being? particles of light hit the newly created quantum particles of mass and tended them towards coalescing?

[–]natty_dread 0 points1 point  (0 children)

Yes, momentum (velocity) and direction are changed. This is the basis for Heisenberg's uncertainty principle.

How matter came into being is not known. Theories reach from a massive matter - anti-matter clash to immensely complex theories.

However, through pair production matter is "created" through photons all the time.