Mind to Matter: The Astonishing Science of How Your Brain Creates Material Reality pdfdrive com



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Mind to Matter The Astonishing Science of How Your Brain Creates Material Reali

THE OBSERVER EFFECT
The observer effect is measured in a classic physics demonstration called the
double-slit experiment. It has been repeated hundreds of times in the past


double-slit experiment. It has been repeated hundreds of times in the past
century. It shows how the presence of an observer changes the outcome of what
is observed.
While subatomic particles like electrons are supposed to behave according to
the fixed laws of physics, they don’t always cooperate. The double-slit
experiment demonstrates that the act of observing a particle affects its behavior.
Electrons are fired at a barrier with two slits in it, and where they end up is
recorded. If they behaved as particles, you’d expect to see two vertical areas of
impact on the other side. It would be as if you’d thrown paint-covered tennis
balls at the slits and they’d produced two vertical paint splashes on the wall.
But the electrons don’t behave like tennis balls. Instead, they interact with
each other to produce a wave. This also happens with photons of light, with
water, and with sound.
What happens when you shoot a single photon through the double slits? It still
forms an interference pattern, just as if it were traveling through both slits
simultaneously.
However, if you place a detector near the slits and observe the process, the
electrons behave like tennis balls. The wave interaction pattern disappears.
If you pass larger particles through the slits, they also behave like tennis balls.
But on the level of the subatomic, electrons and photons behave like waves
unless they are observed, in which case they show up as predictable tennis-ball
particles. The act of observation completely changes the outcome of the
experiment, collapsing waves into particles, energy into matter.
Setup of the double-slit experiment.



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