[Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
There is one SMALL problem with your Hypothesis. RF is transmitted by Electrons. Light is transmitted by Photons. Science has a rather good handle on Electrons but Photons are still not fully understood!!! Apples Oranges!! August W8MIA -- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: The advantage of a dark antennas is how snow and ice might melt off it faster... and most of all how you can't easily see a black mobile whip on your car so it tends not to get tampered with as much. s. Roger Grady k9opo@ wrote: At 12:39 PM 2/21/2007, Steve Bosshard \(NU5D\) wrote: Regarding a clean and shiny antenna, we had a discussion at coffee. The preposition was that radio waves and light have many similarities, ie., wavelength, reflection, Fresnel behavior, and so forth. Using these similarities, a mirror reflects light, and a dark surface absorbs light, so, wouldn't a shiny antenna reflect incoming signals while a dark colored antenna absorbs signals? This may only apply to receiving antennas - hope I can get this idea to market before the April 1 edition of QST.. .. .. de nu5d Cute idea. However... How do you know aluminum that's shiny or black at visible light frequencies is still shiny or black at radio frequencies? Maybe RF black is visible day-glo orange, or pea-soup green. Or maybe it would absorb light so well as to be invisible. I think this would make a good April 1 article. I haven't written one for our repeater club newsletter for a few years, maybe it's time for another. Assuming you don't mind if I borrow your premise. As I think about it a vague sense of deja-vu is forming. Maybe there was an April Fool's article years ago somewhere about invisible antennas? Roger Grady K9OPO
Re: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
W8MIA wrote: There is one SMALL problem with your Hypothesis. RF is transmitted by Electrons. Light is transmitted by Photons. Science has a rather good handle on Electrons but Photons are still not fully understood!!! Apples Oranges!! August W8MIA Details, details... -- Jim Barbour WD8CHL
RE: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
yes and no. Here is more info that you probably wanted to know... http://en.wikipedia.org/wiki/Photon 73, Jon KD5SFA -Original Message- From: Gary Schafer [EMAIL PROTECTED] Sent: Feb 22, 2007 10:17 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors) Are not radio waves and light waves both electromagnetic waves? Are not all electromagnetic waves made up of photons? 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- [EMAIL PROTECTED] On Behalf Of W8MIA Sent: Thursday, February 22, 2007 1:29 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors) There is one SMALL problem with your Hypothesis. RF is transmitted by Electrons. Light is transmitted by Photons. Science has a rather good handle on Electrons but Photons are still not fully understood!!! Apples Oranges!! August W8MIA -- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: The advantage of a dark antennas is how snow and ice might melt off it faster... and most of all how you can't easily see a black mobile whip on your car so it tends not to get tampered with as much. s. Roger Grady k9opo@ wrote: At 12:39 PM 2/21/2007, Steve Bosshard \(NU5D\) wrote: Regarding a clean and shiny antenna, we had a discussion at coffee. The preposition was that radio waves and light have many similarities, ie., wavelength, reflection, Fresnel behavior, and so forth. Using these similarities, a mirror reflects light, and a dark surface absorbs light, so, wouldn't a shiny antenna reflect incoming signals while a dark colored antenna absorbs signals? This may only apply to receiving antennas - hope I can get this idea to market before the April 1 edition of QST.. .. .. de nu5d Cute idea. However... How do you know aluminum that's shiny or black at visible light frequencies is still shiny or black at radio frequencies? Maybe RF black is visible day-glo orange, or pea-soup green. Or maybe it would absorb light so well as to be invisible. I think this would make a good April 1 article. I haven't written one for our repeater club newsletter for a few years, maybe it's time for another. Assuming you don't mind if I borrow your premise. As I think about it a vague sense of deja-vu is forming. Maybe there was an April Fool's article years ago somewhere about invisible antennas? Roger Grady K9OPO Yahoo! Groups - Join or create groups, clubs, forums communities. Links Yahoo! Groups - Join or create groups, clubs, forums communities. Links
Re: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
I posted the comment about shiny antennas totally tongue in cheek and not to be taken seriously. A coating of aluminum oxide should have practically no effect on antenna performance. As far as particles vs waves, seems like some theory fits particles and other theory fits wave theory (Planks and Maxwells?) - I can get more info from our oldest son, AD5RN if needed - he is studying that kind of stuff down at Texas AM.. Steve NU5D
RE: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
The first page of your reference tells the story; The word light is defined here as electromagnetic radiation of any wavelength; thus, X-rays, gamma rays, ultraviolet light, infrared light, microwaves, radio waves, and visible light are all forms of light. In modern physics, the photon is the elementary particle responsible for electromagnetic phenomena. It mediates electromagnetic interactions and makes up all forms of light. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- [EMAIL PROTECTED] On Behalf Of KD5SFA Sent: Thursday, February 22, 2007 12:04 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors) yes and no. Here is more info that you probably wanted to know... http://en.wikipedia.org/wiki/Photon 73, Jon KD5SFA -Original Message- From: Gary Schafer [EMAIL PROTECTED] Sent: Feb 22, 2007 10:17 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors) Are not radio waves and light waves both electromagnetic waves? Are not all electromagnetic waves made up of photons? 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- [EMAIL PROTECTED] On Behalf Of W8MIA Sent: Thursday, February 22, 2007 1:29 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors) There is one SMALL problem with your Hypothesis. RF is transmitted by Electrons. Light is transmitted by Photons. Science has a rather good handle on Electrons but Photons are still not fully understood!!! Apples Oranges!! August W8MIA -- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: The advantage of a dark antennas is how snow and ice might melt off it faster... and most of all how you can't easily see a black mobile whip on your car so it tends not to get tampered with as much. s. Roger Grady k9opo@ wrote: At 12:39 PM 2/21/2007, Steve Bosshard \(NU5D\) wrote: Regarding a clean and shiny antenna, we had a discussion at coffee. The preposition was that radio waves and light have many similarities, ie., wavelength, reflection, Fresnel behavior, and so forth. Using these similarities, a mirror reflects light, and a dark surface absorbs light, so, wouldn't a shiny antenna reflect incoming signals while a dark colored antenna absorbs signals? This may only apply to receiving antennas - hope I can get this idea to market before the April 1 edition of QST.. .. .. de nu5d Cute idea. However... How do you know aluminum that's shiny or black at visible light frequencies is still shiny or black at radio frequencies? Maybe RF black is visible day-glo orange, or pea-soup green. Or maybe it would absorb light so well as to be invisible. I think this would make a good April 1 article. I haven't written one for our repeater club newsletter for a few years, maybe it's time for another. Assuming you don't mind if I borrow your premise. As I think about it a vague sense of deja-vu is forming. Maybe there was an April Fool's article years ago somewhere about invisible antennas? Roger Grady K9OPO Yahoo! Groups - Join or create groups, clubs, forums communities. Links Yahoo! Groups - Join or create groups, clubs, forums communities. Links Yahoo! Groups - Join or create groups, clubs, forums amp; communities. Links
[Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
--- In Repeater-Builder@yahoogroups.com, W8MIA [EMAIL PROTECTED] wrote: There is one SMALL problem with your Hypothesis. RF is transmitted by Electrons. Light is transmitted by Photons. Science has a rather good handle on Electrons but Photons are still not fully understood!!! This having been said does anyone have an understanding of Smoketrons and how they propagate;) Apples Oranges!! August W8MIA -- In Repeater-Builder@yahoogroups.com, skipp025 skipp025@ wrote: The advantage of a dark antennas is how snow and ice might melt off it faster... and most of all how you can't easily see a black mobile whip on your car so it tends not to get tampered with as much. s. Roger Grady k9opo@ wrote: At 12:39 PM 2/21/2007, Steve Bosshard \(NU5D\) wrote: Regarding a clean and shiny antenna, we had a discussion at coffee. The preposition was that radio waves and light have many similarities, ie., wavelength, reflection, Fresnel behavior, and so forth. Using these similarities, a mirror reflects light, and a dark surface absorbs light, so, wouldn't a shiny antenna reflect incoming signals while a dark colored antenna absorbs signals? This may only apply to receiving antennas - hope I can get this idea to market before the April 1 edition of QST.. .. .. de nu5d Cute idea. However... How do you know aluminum that's shiny or black at visible light frequencies is still shiny or black at radio frequencies? Maybe RF black is visible day-glo orange, or pea-soup green. Or maybe it would absorb light so well as to be invisible. I think this would make a good April 1 article. I haven't written one for our repeater club newsletter for a few years, maybe it's time for another. Assuming you don't mind if I borrow your premise. As I think about it a vague sense of deja-vu is forming. Maybe there was an April Fool's article years ago somewhere about invisible antennas? Roger Grady K9OPO
[Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
I lived in Bryan/Collage Station for a while and never did find out what animal husbandry has to do with electronics ;) Check with your son and let me know. --- In Repeater-Builder@yahoogroups.com, Steve Bosshard \(NU5D\) [EMAIL PROTECTED] wrote: I posted the comment about shiny antennas totally tongue in cheek and not to be taken seriously. A coating of aluminum oxide should have practically no effect on antenna performance. As far as particles vs waves, seems like some theory fits particles and other theory fits wave theory (Planks and Maxwells?) - I can get more info from our oldest son, AD5RN if needed - he is studying that kind of stuff down at Texas AM.. Steve NU5D
