QM: measurement vs interaction

In summary, Measurement and interaction are two fundamental concepts in quantum mechanics. Measurement involves observing a quantum system and obtaining information about its properties, while interaction refers to any physical process that affects the state of a quantum system. The uncertainty principle is closely related to both of these processes, as they can introduce uncertainty into a system's properties. Both measurement and interaction can significantly impact the outcome of quantum experiments, and understanding their differences is crucial for technological advancements and further discoveries in the field of quantum mechanics. The role of the observer in quantum measurements is still a subject of debate, and understanding this role is essential for a deeper understanding of the behavior of particles at the quantum level.
  • #1
oddthingy
6
0
I'm just wondering...

Regarding the single & double slit experiments...

Why does every interpretation say that the photographic screen is 'measuring' the position of the particle traveling towards it?

Why not say that the photographic screen interacts with an electron that is spread out over a larger amount of space, to make it coallesce into a smaller amount of space?
 
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  • #2
Because it's only a single screen pixel that interacts with the electron and registers its impact, not the entire screen. The interaction is local.
 

What is the difference between measurement and interaction in quantum mechanics?

In quantum mechanics, measurement refers to the act of observing a quantum system and obtaining information about its properties, such as position or momentum. Interaction, on the other hand, refers to any physical process that affects the state of a quantum system. While measurement involves the collapse of the wave function, interaction does not necessarily lead to this collapse.

How does the uncertainty principle relate to measurement and interaction in quantum mechanics?

The uncertainty principle states that it is impossible to know the exact values of certain pairs of properties, such as position and momentum, of a quantum system simultaneously. This principle is closely related to measurement and interaction, as both of these processes can introduce uncertainty into a system's properties.

Can measurements or interactions affect the outcome of quantum experiments?

Yes, both measurements and interactions can affect the outcome of quantum experiments. When a measurement is made on a quantum system, the act of observation can change the state of the system. Similarly, interactions with other particles or fields can also alter the state of a quantum system and influence the results of experiments.

How do scientists account for the role of the observer in quantum measurements?

The role of the observer in quantum measurements is a subject of much debate and interpretation in quantum mechanics. Some scientists argue that the observer plays a crucial role in determining the outcome of experiments, while others argue that the observer is simply another physical system interacting with the quantum system being measured. Ultimately, the role of the observer is still an open question in quantum mechanics.

What are the practical applications of understanding the differences between measurement and interaction in quantum mechanics?

Understanding the differences between measurement and interaction in quantum mechanics is crucial for the development of technology such as quantum computing and cryptography. It also allows scientists to better understand the behavior of particles at the quantum level and make more accurate predictions about their behavior in experiments. Additionally, this understanding can potentially lead to new discoveries and advancements in the field of quantum mechanics.

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