Science, asked by Anonymous, 10 months ago

✊As ʟɪɢʜᴛ ғʀᴏᴍ ᴀ sᴛᴀʀ sᴘʀᴇᴀᴅs ᴏᴜᴛ ᴀɴᴅ ᴡᴇᴀᴋᴇɴs, ᴅᴏ ɢᴀᴘs ғᴏʀᴍ ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ ᴘʜᴏᴛᴏɴs?☃️​

Answers

Answered by Anonymous
4

your question :

As ʟɪɢʜᴛ ғʀᴏᴍ ᴀ sᴛᴀʀ sᴘʀᴇᴀᴅs ᴏᴜᴛ ᴀɴᴅ ᴡᴇᴀᴋᴇɴs, ᴅᴏ ɢᴀᴘs ғᴏʀᴍ ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ ᴘʜᴏᴛᴏɴs?

Answer:

A photon typically has a definable (though not easily measurable) spatial extent. See, for example, Single Photon Hologram, which describes a way that the spatial (and temporal) extent can be measured -- as long as we have access to plenty of identical photons. Because the speed of light is the same for all frequencies/wavelengths, a photon propagating in the vacuum cannot spread out in its direction of propagation. However, it definitely spreads out in the directions perpendicular to its direction of propagation. In order to know if photons from a source can start out overlapping but at some distance no longer overlap, it would be necessary to know the details of the source and its size.

Note: "overlap" is a fuzzy concept in this context. If a contour surface could be drawn around the photon so that the surface enclosed a volume containing, say 99.99% of the photon's probability of being present, then we might for example agree to pretend the portion of the wavefunction outside the volume does not exist, and agree that in some cases the photons will not overlap. However, the wavefunction of a free photon has an at least extremely small but finite value everywhere, so in an absolute sense all the photons from the source will overlap (though no experiment is likely to be able to prove it).

Attachments:
Answered by beingSaRcAsTiC
23

Answer:

{\huge{\mathcal{\blue{Heya:}}}}

As light from a Star spreads out and Weakens, Gaps are not formed between the photons.

EXPLANATION::

When the light intensity gets weaker the statistical character of light becomes evident. The classical fields describe the average intensity but at low intensity you will increasingly see intensity fluctuations about this average. This phenomenon is called photon shot noise. If for example your detector detects an intensity corresponding to 10.000 photons during its integration time, then the intensity will follow a gaussian distribution with standard deviation of 100 or 1%. At even lower photon numbers poisson statistics applies. This is true for an incoherent source such as the star you mentioned, or a classical light bulb. You could say that between the individual photon detections there are gaps that display random length variation.

Therefore depends on the point of view from which you analyse it.

{\huge{\mathcal{\purple{HOPE \ IT \ HELPS:::}}}}

{\mathcal{\pink{beingSaRcAsTiC}}}

Similar questions