Can anybody explain this?

[Flying Illini]

My brother asked me the reason for the circular rainbow that appears around the shadow of an aircraft when seeing the shadow pass over the clouds. Why does it appear that the circular rainbow doesn't go all the way around the aircraft when the clouds are very close to the aircraft and the shadow isn't far away?

Anybody?

 

[apdsm]

Because...

 

[Flying Illini]

That's along the lines of what I told him...PFM!

 

[pilotyip]

Diffuses

The colors of visible electromagnetic spectrum diffuse at different rates in a medium, i.e. atmosphere. The rate of diffusion is proportion to the wavelength of the frequency of the signal. The colors of visible light are different frequencies; therefore they will separate like a rainbow when filling the light void created by your shadow. Any high school physics student should be able to figure that out, you do not need a college degree.

 

[Vladimir Lenin]

Google isn't meant to be a substitute for college

 

[apdsm]

Any high school physics student should be able to figure that out, you do not need a college degree.

Please tell me that was sarcasm and you are not being an A$$...

 

[Gulfstream 200]

No he is serious (?)!! right YIP??

but...if you dont go to college you might have to make a career out of flying car parts to Mexico in a 40 yr old Falcon 20.

college......overrated...

 

[Flymach2]

Hi...

A glory is an optical phenomenon produced by light scattered back toward its source by a cloud of uniformly-sized water droplets. A glory can have multiple colored rings. The angular size is much smaller than a rainbow, about 5° to 20°, depending on the size of the droplets. Since it is seen in the direction opposite the sun it is most commonly observed while airborne, with the glory surrounding the airplane's shadow on clouds.


Regards

 

[Flying Illini]

Thanks for the replies, that answered the question!

 

[Jeff Helgeson]

Boyz! Boyz! Boyz!

Looks like you guys are due for time in detension hall for a little adjustment in attitude.

For all you "Yippies" that have been skippin' class, we'll send the truant officer by the wedge bar to haul yo' A$$ back ta class!!!

 

[pilotyip]

For G200

Hey you have to stand for something, and I was kidding, I actually learned that in college physics. Look at that, I actually used my college degree in public. However, I have to leave my mark where ever I post. I tell you someone has to stand up for those who see the real fallacy of the college degree. And as posted before, as far as the DA-20 job goes, I love it and consider my self one of the luckiest guys in the world, being paid to do something I have wanted to do since child hood. I love short legs, lots of approaches, landings, and do not think I could stand another 10 hour ocean crossing on the autopilot. I do not know how you guys do it. Not many people get to live their dream. I can not understand why you would not want to share in the joy of my celebration. I

 

[CaSyndrm]

I'm sure I'll be quickly corrected if I'm wrong, It's called a Sundog

 

[mar]

You asked for it

A sundog is when the sun's light reflects off ice crystals in a thin cirrus layer (usually) and produces a bright spot on either side of the sun's disc (if the conditions are right).

The Glory is similiar but different.

I'll take Meteorological Phenomenon for $500 Alex.

 

[ShyFlyGuy]

I'm sure I'll be quickly corrected if I'm wrong, It's called a Sundog

Huh-huh... huh... you said, "Sundog."

Actually, I hate to say it, but the whole 5-20 degree explenation actually made sense. I understood that. I could never repeat it without drawing it, but I understood that.

Really, I did. Basically, we get too close to the Glory (that was a question in AOPA's Pilot Mag a few months/years back) to see the colors... kinda like standing too close to one of those pictures where you have to blur your eyes to see the image.

Yeah, I need a real job.

 

[Gulfstream 200]

Hey you have to stand for something, and I was kidding, I actually learned that in college physics. Look at that, I actually used my college degree in public. However, I have to leave my mark where ever I post. I tell you someone has to stand up for those who see the real fallacy of the college degree. And as posted before, as far as the DA-20 job goes, I love it and consider my self one of the luckiest guys in the world, being paid to do something I have wanted to do since child hood. I love short legs, lots of approaches, landings, and do not think I could stand another 10 hour ocean crossing on the autopilot. I do not know how you guys do it. Not many people get to live their dream. I can not understand why you would not want to share in the joy of my celebration. I

say it aint so YIP....you learned something in college??

I bet you wouldn't have all the great opportunities you have had without that degree(s) either!!

Yip, 10 hour Ocean crossings aren't bad when you have crew rest areas with DVD libraries, internet acccess, Flight Attendents serving you fine food...etc....etc...its really not too bad...some might say its even better than multiple approaches into willow run in a broken old Falcon 20...

dont forget, after that 6+30 hr crossing we also have to kick off that autopilot and land in EGGW at 600mRVR too. However - a HUD, Enhanced Vision, and Autobrakes take a bit of the edge off I suppose...

but its all a personal choice, I know.

and Yes, I too, was kidding.

I still bet you learned more in college than you might think...

So you agree now that a college degree is a prereq for a great aviation career? Im glad to see you are coming around..

Be Well.

 

[pilotyip]

No I goofed? went to college by mistake

I thought you needed a college degree to be a Navy pilot, but back in 1963 when I could have first been eligible, I could have gotten in with two years of college and no degree. I would have been a NAVCAD,. I did not learn about this until my senior year,

 

[Pilot124]

It because of all the chemtrails..........