Infinite vs. instant
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From: Sam Wormley on 25 May 2010 13:32 On 5/25/10 11:48 AM, GogoJF wrote: > Seeing light is instantaneous; seeing > light is not a transmission like a radar wave. Other than its wavelength ,momentum and energy, radar (microwave) is identical to visible light. Whatever gave you reason to believe otherwise?
From: GogoJF on 25 May 2010 13:37 On May 25, 12:32 pm, Sam Wormley <sworml...(a)gmail.com> wrote: > On 5/25/10 11:48 AM, GogoJF wrote: > > > Seeing light is instantaneous; seeing > > light is not a transmission like a radar wave. > > Other than its wavelength ,momentum and energy, > radar (microwave) is identical to visible light. > Whatever gave you reason to believe otherwise? Radar is invisible for one thing.
From: GogoJF on 25 May 2010 13:38 On May 25, 12:32 pm, Sam Wormley <sworml...(a)gmail.com> wrote: > On 5/25/10 11:48 AM, GogoJF wrote: > > > Seeing light is instantaneous; seeing > > light is not a transmission like a radar wave. > > Other than its wavelength ,momentum and energy, > radar (microwave) is identical to visible light. > Whatever gave you reason to believe otherwise? Radar is two-way transmission for another.
From: PD on 25 May 2010 13:39 On May 25, 12:38 pm, GogoJF <jfgog...(a)yahoo.com> wrote: > On May 25, 12:32 pm, Sam Wormley <sworml...(a)gmail.com> wrote: > > > On 5/25/10 11:48 AM, GogoJF wrote: > > > > Seeing light is instantaneous; seeing > > > light is not a transmission like a radar wave. > > > Other than its wavelength ,momentum and energy, > > radar (microwave) is identical to visible light. > > Whatever gave you reason to believe otherwise? > > Radar is two-way transmission for another. Not necessarily. Radar is no different than radio. Radio transmission from your FM station to your tuner is not two-way.
From: Sam Wormley on 25 May 2010 13:45
On 5/25/10 12:37 PM, GogoJF wrote: > On May 25, 12:32 pm, Sam Wormley<sworml...(a)gmail.com> wrote: >> On 5/25/10 11:48 AM, GogoJF wrote: >> >>> Seeing light is instantaneous; seeing >>> light is not a transmission like a radar wave. >> >> Other than its wavelength ,momentum and energy, >> radar (microwave) is identical to visible light. >> Whatever gave you reason to believe otherwise? > > Radar is invisible for one thing. Because our eyes are not sensitive to those wavelengths. I'll bet your son, Nathan, going to Iowa State, knows the electromagnetic spectrum from radio through gamma. http://www.mhhe.com/physsci/astronomy/fix/student/chapter6/06f28.html |