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Honorable_Death
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can you measure an objects spin or position, or polarization, without actually measuring it? like can you find out if they have any of those 3, without actually measuring it?
caribou said:Yes, most famously in the Einstein-Podolsky-Rosen paradox in which we might have a particle which decays into two photons. If we measure the property of one photon we can know the corresponding property of the other photon without having measured it because the two photons' properties are correlated ("entangled"). The original EPR paper is about position and momentum, Bohm's later and more practical version is about spin.
Honorable_Death said:well you can know its position on a certain axis, if the photon is going in a strait like you can measure its height without affecting its speed...right?
Yes, an object's spin can be measured using a variety of techniques such as magnetic resonance imaging (MRI), electron spin resonance spectroscopy (ESR), and nuclear magnetic resonance (NMR).
Yes, an object's position can be measured using various methods such as distance sensors, GPS technology, and laser rangefinders.
Yes, an object's polarization can be measured using techniques such as polarimetry, which measures the polarization state of light passing through or reflecting off an object.
These measurements have a wide range of applications, including medical imaging, navigation, astronomy, and material analysis.
While there are various techniques for measuring these properties, they may be limited by factors such as the precision of the measurement equipment and the complexity of the object being measured.