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Physics : Recent Questions and Answers (Page 206)

Find answers to your questions about Physics or help others by answering their Physics questions.

Relativistic Computation?

Is it possible to employ relativity to develop computational technology? Here is a really basic example: Build a Computer and Feed it the Problem (say the problem is projected to...

Asked on 07/06/2021

3 answer

Ground state of composite and non-interacting bosons on a lattice

Background Consider a lattice system described by the Hamiltonian$$H = - J sum_{leftlangle ij rightrangle} left( Delta^{dagger}_i Delta_j + mathrm{h.c.} right)$$where $Delta_i$, $Delta^{dagger}_i$...

Asked on 07/06/2021

1 answer

Can we define potentials for non-conservative force?

I have just started out on Quantum Cavity Optomechanics from this EdX course , and have learnt that radiation pressure force is non-conservative....

Asked on 07/06/2021

1 answer

Is the 300 second sustained fusion goal set by KSTAR a threshold for net positive energy product of fusion?

KSTAR recently broke a record in fusion technology by maintaining its heat for 20 seconds with a stated goalof reaching 300 seconds. Why 300? Does 300 get us to the...

Asked on 07/06/2021

0 answer

How could Leptoquarks explain Lepton Flavour universality (LFU) violation?

I recently read about the possibility of Leptoquarks and that this new particle could also explain a possible LFU violation.Why would introducing a new particle explain LFU violation?...

Asked on 07/06/2021

1 answer

Why is the Paschen Law linear at large pd values?

The Paschen Law becomes linear at larger $ptimes d$ values but what's the origin of this linearity? Does it come from the homogeneous electrical field? I understand that the origin...

Asked on 07/06/2021

1 answer

Why do molecules absorb "exact" frequencies when given a "continuous" beam of light?

This question is in the context of performing simple rotational spectroscopy on molecules, but could be extended for more general cases. In rotational (microwave or IR) spectroscopy of molecules, the...

Asked on 07/06/2021

2 answer

Capacitor reactance with frequency variation

Consider that I have a capacitor and resistance connected in series, and I have a voltage source $V_0 cos(omega t)$ or some alternating source of voltage connected. I do...

Asked on 07/06/2021

1 answer

Electromagnetism for mathematicians

I am trying to find a book on electromagnetism for mathematicians (so it has to be rigorous).Preferably a book that extensively uses Stokes' theorem for Maxwell's equations(unlike other...

Asked on 07/06/2021 by chhan92

3 answer

Can someone please explain to a layperson how we know that the $B$ meson decay into a muon doesnt then decay into an electron?

Apologies if this is a stupid question. I am a complete layperson with no formal scientific education.If the SM predicts that $B$ Mesons decay into either electrons or...

Asked on 07/06/2021 by Holly_NI

1 answer

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