Timeline for Can a microwave antenna detect single microwave photons?
Current License: CC BY-SA 4.0
6 events
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| Nov 22 at 5:39 | comment | added | Roger V. | @JEB I am talking about the actual physical device, not about what it is intended to measure. If the device own temperature is about $300K$, as a conventional radio receiver or a photo diode, it won't register quanta with energies around Kelvin. I understand that you know more than me about cosmic radiation, but I am talking about a purely technical issue. | |
| Nov 21 at 21:06 | comment | added | JEB | I consider microwave radiometry to look at Earth's atmpsphere (150-300K), though the calibration uses cold sky (2.7K) e.g. (en.wikipedia.org/wiki/Advanced_Technology_Microwave_Sounder_ | |
| Nov 21 at 19:22 | comment | added | Roger V. | @JEB I mean ambient temperature - microwave photon energy corresponds to a few kelvin or lower, so one needs a detector working in cryogenic conditions. | |
| Nov 21 at 18:02 | comment | added | JEB | what do you mean "blackbody background"?, in microwave radiometry, blackbody radiation is the signal. The noise is: electronics, the sun, the moon, and, ugh, 5G. | |
| Nov 21 at 13:35 | history | edited | Roger V. | CC BY-SA 4.0 |
added 567 characters in body
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| Nov 21 at 13:28 | history | answered | Roger V. | CC BY-SA 4.0 |