5 ms·

"...magnetic monopole..." is mentioned in the photo caption :)

by quietriot 8y ago

mcphage 8y ago
Yeah, I was confused about that as well. What are they talking about?
- akovaski 8y ago
  I'm not an expert, but I presume "magnetic monopole antenna" refers to a monopole antenna[1] with some affiliation with magnetics. I presume the word "magentic" came from this description in the article: The key part of an oscillator is the resonant tank circuit: an inductor and a capacitor. Energy sloshes back and forth between the inductor’s magnetic field and the capacitor’s electric field at a resonant frequency determined by the capacitance and inductance. In the new circuit, the team used the antenna itself as the inductor in the resonant tank. Because it was acting as an inductor, the antenna radiated using changing magnetic field instead of an electric field... Though I don't follow the meaning of this paragraph, what with the energy sloshing. I guess it comes down to the antenna being used as an inductor. [1] https://en.wikipedia.org/wiki/Monopole_antenna https://en.wikipedia.org/wiki/Monopole_antenna
  - mcphage 8y ago
    Ah, that could be where the confusion came from. > I presume the word "magentic" came from this description in the article A poor choice, then, since magnetic monopoles famously don't exist (or aren't known to exist). But, mistakes happen.
tzs 8y ago
It's "magnetic monopole antenna". A "monopole antenna" is a type of antenna. There are different type of monopole antenna. Two of the types are called "electric monopole antennas" and "magnetic monopole antennas". Here's a paper that looks at those two types [1]. [1] https://pdfs.semanticscholar.org/dd05/23adec09486c283e1ab3480db0f1d78201c4.pdf https://pdfs.semanticscholar.org/dd05/23adec09486c283e1ab348...
- comboy 8y ago
  This is quintessence of a typical discussion on the Internet. Context matters and it's expensive to gather appropriate context. Usually it's not as simple to explain as in this case. "I don't have to read further because I know for a fact that <this bit> is bullshit". It's a fair heuristic. It's just that it is so difficult to have a deeper meaningful discussion without some trust established first (so that you know you're not wasting your time).
  - quietriot 8y ago
    As a ham with an Extra class license I'm understanding that it was a type of antenna and am now regretting this commentary but for just a moment wondered if it was an April fools page published early. I do have an interest in magnetic antennas (antennas in general) and also appreciate the paper listed by tzs. Thank you tzs! Sorry for dropping the SNR in here :)

"...magnetic monopole..." is mentioned in the photo caption :)

mcphage 8y ago

Yeah, I was confused about that as well. What are they talking about?

akovaski 8y ago
I'm not an expert, but I presume "magnetic monopole antenna" refers to a monopole antenna[1] with some affiliation with magnetics. I presume the word "magentic" came from this description in the article: The key part of an oscillator is the resonant tank circuit: an inductor and a capacitor. Energy sloshes back and forth between the inductor’s magnetic field and the capacitor’s electric field at a resonant frequency determined by the capacitance and inductance. In the new circuit, the team used the antenna itself as the inductor in the resonant tank. Because it was acting as an inductor, the antenna radiated using changing magnetic field instead of an electric field... Though I don't follow the meaning of this paragraph, what with the energy sloshing. I guess it comes down to the antenna being used as an inductor. [1] https://en.wikipedia.org/wiki/Monopole_antenna https://en.wikipedia.org/wiki/Monopole_antenna
- mcphage 8y ago
  Ah, that could be where the confusion came from. > I presume the word "magentic" came from this description in the article A poor choice, then, since magnetic monopoles famously don't exist (or aren't known to exist). But, mistakes happen.

tzs 8y ago

It's "magnetic monopole antenna". A "monopole antenna" is a type of antenna. There are different type of monopole antenna. Two of the types are called "electric monopole antennas" and "magnetic monopole antennas". Here's a paper that looks at those two types [1]. [1] https://pdfs.semanticscholar.org/dd05/23adec09486c283e1ab3480db0f1d78201c4.pdf https://pdfs.semanticscholar.org/dd05/23adec09486c283e1ab348...

comboy 8y ago
This is quintessence of a typical discussion on the Internet. Context matters and it's expensive to gather appropriate context. Usually it's not as simple to explain as in this case. "I don't have to read further because I know for a fact that <this bit> is bullshit". It's a fair heuristic. It's just that it is so difficult to have a deeper meaningful discussion without some trust established first (so that you know you're not wasting your time).
- quietriot 8y ago
  As a ham with an Extra class license I'm understanding that it was a type of antenna and am now regretting this commentary but for just a moment wondered if it was an April fools page published early. I do have an interest in magnetic antennas (antennas in general) and also appreciate the paper listed by tzs. Thank you tzs! Sorry for dropping the SNR in here :)