Insomniac-Net ANSWERS Friday[31], Aug 04, 2017 [A-B-A ]

Insomniac-Net ANSWERS -- Friday[31], Aug 04, 2017 [ A - B - A ]
Tonight's Topic: Red Suns
ANSWERS = [ A - B - A]
RATED: PG
    Good morning/evening, everybody! Thank you for joining us last night.
    We hope you discovered something interesting during the time we spent together on the Insomniac Net last night.
        -- The ever-delightful Shelley [KF7TBA] and just plain old LW [K7LWA] (email K7LWA.INS@gmail.com).
    (Please Note: The Net Controller's Answers are always CORRECT (even if they aren't every time!)
    Please check out Winsystem's Insomniac Trivia Net page.
    You can get these Questions & Answers at the Yahoo-groups' Messages Link.
       
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    As the temperatures climbed into the 90s here in the Peoples' Republic of Seatac (A Planned Airport Community), we also have endured couple days of smokey air.
    Much of this smoke has come from wildfires burning in Canada's British Columbia.
    As a result we have witnessed several spectacular red sunrises and sunsets.
    Accordingly, we offer for your approval, 3 questions about why we are seeing Red Suns?
    Please choose your answers from any of the 3 (reuseable) answers of "A", "B", or "C" (if applicable!) for each of the following question.   
    Good Luck and remember, YOU are always a WINNER with us, regardless of your actual answers!  
    OK, put on your smoke-mask, and venture outside....
++ Red Suns ++
Question #1: Although we may occasionally see red suns, orange moons, and rainbows, the light coming in from the sun is white with all wavelengths. True of false?
        A. True, or
        B. False.
       
Question #2: The scattering of light by small particles in the atmosphere -- which causes red sunrises/sunsets and also makes the sky blue --  is technically known by which of the following terms?
        A. Brownian Motion, or
        B. Rayleigh Scattering, or
        C. Doppler shift.
       
Question #3: In our atmosphere, short wavelengths (purple and blue) are scattered much more than longer wavelengths (orange and red). True or false?
        A. True, or
        B. False.
    "... But why does smoke cause the red coloration?
    The reason? The scattering of light by small particles in the atmosphere--also known as Rayleigh Scattering. It also explains why the sky is blue!
    The light from the sun contains all wavelengths and is essentially white.
    White light possesses contributions from all wavelengths (or colors) in the visible spectrum (see figure).
    On the shorter wavelength side there is blue and on the longer wavelength side there is red.
    It turns out the small particles in the air (small compared to the wavelength of light) can scatter incoming light into various directions and that they scatter short wavelengths (purple and blue) much more than longer wavelengths (orange and red).
       
    So the light coming in from the sun is white with all wavelengths, but the molecules in the atmosphere scatter blue light more than other wavelengths.
    That blue light then bounces around between molecules and down to earth and when you look at the sky in a direction other than the sun, you see this scattered light (see figure below). That is why the sky is blue.
    Now if you add a lot more small particles--like a nice dense smoke plume--you get scattering on steroids.
    Not only blue and purple get scattered, but so does a lot of the greens and yellows. So what does that leave?
    Oranges and reds. And thus the sun's rays have a red and orange color...
    A similar effect occurs near sunset, when the sun's rays have to pass through a greater distance in the atmosphere.
        [SOURCE: Cliff Mass Weather and Climate Blog -- Tuesday, August 3, 2010 -- Why did smoke cause the a reddish sun? ]

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++ STATISTIC OF THE DAY ++   --  Wildfire Averages - Province of British Columbia

The B.C. current 10-year average*, taken from 2006 to 2015, is 1,844 fires, 38.7% caused by people and 61.3% caused by lightning.

    [Source:  Wildfire Averages - Province of British Columbia]
 
Q: How many wildfires -- active or inactive -- have occurred in British Columbia, Canada since April 1, 2017?
A: Total Fires to Date (Aug 03, 2017): 868 (498,315 Ha)
    [Source:  Government of B.C. - BC Wildfire Service - Current Statistics ]

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Please include you name, Callsign, and those correct answers.
Good luck everyone!
Shelley [KF7TBA] & LW [K7LWA]
K7LWA.INS@gmail.com
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Next Week: ????
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Thank you!
Shelley [KF7TBA] & LW [K7LWA]
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INS2017[31]-08-04    2017-216
Posted 2017-08-05 02:05PT
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Posted by K7LWA.INS at Posted 2017-08-05 02:05PT USA

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