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Honestly, the "HF physics is black magic" trope has made me numb to the phantastical contraptions. I appreciate when they look cool, like esoteric orgon wave ra
by MrBuddyCasino 4mo ago
Honestly, the "HF physics is black magic" trope has made me numb to the phantastical contraptions. I appreciate when they look cool, like esoteric orgon wave radiators.
- ahartmetz 4mo agoAFAIK, the black magic factor is much higher for HF electronics than for HF mechanics. It's at least partially because you can build more complex systems with HF electronics. The other difference is that high frequency EM oscillations easily radiate energy in the form of photons, while high energy mechanical oscillations radiate nothing for practical purposes (at least in vacuum), gravity waves if you're being pedantic.
- MobiusHorizons 4mo agoSmall note of clarification. HF in a radio frequency (RF) context actually refers to what we would now consider fairly low frequencies between 3 and 30mhz where wavelengths are in the tens of meters. The black magic is mostly in UHF AND microwave regions where wavelengths start to measure closer to the size of circuit elements. Although I have also heard it said “RF physics is black magic” to cover all the bases
- cgyvbunji 4mo agoYes, radio found out naming is hard before software did, in very old times there was High Frequency (HF), but then circuits got fast enough to go higher, oops, ok no problem, let's call the new frequencies Very High Frequency (VHF) whew that was close, but wait they got even faster! Ugh! Ok let's call the new frequencies Ultra High Frequency (UHF), but wait, we're still not in the Ghz range yet! Thankfully they did not keep going to Super Super Mega Ultra High Frequency.
- LoganDark 4mo agoSky High Frequency
- mNovak 4mo agoUhm.. Super High Frequency (SHF) and Extremely High Frequency (EHF) would like to have a word. Though yes in my experience, at those frequencies people stop using ITU designations, and switch to IEEE (S,C,X-band etc).
- cgyvbunji 4mo agoAhaha that's even better, I had no idea, love it!
- saltcured 4mo agoThey should have started adopting olive size factors. After Ultra High, we could have had Jumbo, Colossal, Super Colossal. and Mammoth frequency ranges. Not to be confused with Colossal wavelengths, which is what we could have used if we need to fiddle around below Extremely Low frequencies..
- tmzt 4mo agoSo you've heard of USB?
- isomorphic 4mo agoTelevision resolutions appear to be on the same naming path.
- SAI_Peregrinus 4mo agoOh, they're much worse[1]. Is 4k 3840x2160 or 4096x2160? That's right, it's both! And 4096x2048! And 4096x4096! And about half a dozen other resolutions, many of which have no dimension of 4000 or 4096 pixels. [1] https://en.wikipedia.org/wiki/List_of_common_display_resolutions https://en.wikipedia.org/wiki/List_of_common_display_resolut...
- inigyou 4mo ago3–30 Hz Extremely low frequency 30–300 Hz Super low frequency 300–3000 Hz Ultra low frequency 3–30 kHz Very low frequency 30–300 kHz Low frequency 300 kHz – 3 MHz Medium frequency 3–30 MHz High frequency 30–300 MHz Very high frequency 300 MHz – 3 GHz Ultra high frequency 3-30 GHz Super high frequency 30–300 GHz Extremely high frequency 300 GHz – 3 THz Tremendously high frequency