Atomic Structure: Protons & Neutrons Explained

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Protons and neutrons are bound together in atomic nuclei due to the strong nuclear force, which is a fundamental interaction that attracts these particles. Neutrons do not carry an electric charge, allowing them to contribute to the stability of the nucleus without repelling protons, which are positively charged. This attraction helps to overcome the electromagnetic repulsion between protons. The presence of neutrons also plays a crucial role in determining the stability of an atom. Understanding the relationship between protons and neutrons is essential for grasping atomic structure.
benzun_1999
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dear reader,
why are the protons embeded with the nutrons? does nutron get atrracted to protons?
 
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Yes, the protons and neutrons feel an attration though the strong nuclear force.
 
Thread 'Unexpected irregular reflection signal from a high-finesse cavity'

Thread 'Unexpected irregular reflection signal from a high-finesse cavity'

I am observing an irregular, aperiodic noise pattern in the reflection signal of a high-finesse optical cavity (finesse ≈ 20,000). The cavity is normally operated using a standard Pound–Drever–Hall (PDH) locking configuration, where an EOM provides phase modulation. The signals shown in the attached figures were recorded with the modulation turned off. Under these conditions, when scanning the laser frequency across a cavity resonance, I expected to observe a simple reflection dip. Instead...
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