How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask SpecialistMichael Your Own Question

SpecialistMichael
SpecialistMichael, MS, CSCS
Category: General
Satisfied Customers: 507
Experience:  Senior Information Specialist
65186368
Type Your Question Here...
SpecialistMichael is online now
A new question is answered every 9 seconds

The moon looks bigger when it first rises. I have been told

Resolved Question:

The moon looks bigger when it first rises. I have been told this is due to a variant of the doppler effect. Is this true?
Submitted: 2 years ago.
Category: General
Expert:  SpecialistMichael replied 2 years ago.

FitnessSpecialist :

I will be switching us to standard format as it appears you are offline.

Expert:  SpecialistMichael replied 2 years ago.
Our chat has ended, but you can still continue to ask me questions here until you are satisfied with your answer. Come back to this page to view our conversation and any other new information.

What happens now?

If you haven’t already done so, please rate your answer above. Or, you can reply to me using the box below.
Customer: replied 2 years ago.
Couldn't see answer.
Expert:  SpecialistMichael replied 2 years ago.
Mr. Mason, thank you for your question - sorry for the delays, I had to build the answer in a different format.

There are a myriad of theories(many conflicting) as to why the moon appears larger to the human eye when lower on the horizon. Obviously we know the difference of the moon's distance the the human on the ground is relatively the same, with up to one earth's atmosphere(which is relatively small) in distance, but it actually appears larger when its closer to the horizon. The other reason it appears difference is because of refractive light that makes it appear slightly shorter in height, probably creating a relative difference making it look "fatter". We know the distance is only that difference and we know from distance of the moon, the amount of light refracted is different. The other theories are hard to quantify.

If you were to use something like a dime, and hold the dime at arms length when the moon looks bigger as well as smaller you would find it is merely an optical illusion and there would be no real difference relative to the size of the dime.

I had the same question, until it was explained to me by a scientist in school, that is merely a situation of a slight distance difference with a difference in light refraction that makes a big visual difference.

Mike
Expert:  SpecialistMichael replied 2 years ago.
Thank you for taking the time to rate.

There has been a format change in which a "posted answer" happens when we exit from chat. The switch to standard format was not your answer.

In case you didn't get it, I will repost it below so you can have the information you requested in your question.

Please remember to rate this information as it is the information that actually answers the question you asked :)

Regards,
Mike
Expert:  SpecialistMichael replied 2 years ago.
As promised here is your answer Smile and the information that answers your question.

There are a myriad of theories(many conflicting) as to why the moon appears larger to the human eye when lower on the horizon. Obviously we know the difference of the moon's distance the the human on the ground is relatively the same, with up to one earth's atmosphere(which is relatively small) in distance, but it actually appears larger when its closer to the horizon. The other reason it appears difference is because of refractive light that makes it appear slightly shorter in height, probably creating a relative difference making it look "fatter". We know the distance is only that difference and we know from distance of the moon, the amount of light refracted is different. The other theories are hard to quantify.

If you were to use something like a dime, and hold the dime at arms length when the moon looks bigger as well as smaller you would find it is merely an optical illusion and there would be no real difference relative to the size of the dime.

I had the same question, until it was explained to me by a scientist in school, that is merely a situation of a slight distance difference with a difference in light refraction that makes a big visual difference.

Mike
SpecialistMichael, MS, CSCS
Category: General
Satisfied Customers: 507
Experience: Senior Information Specialist
SpecialistMichael and 68 other General Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Ron

    ASE Certified Technician

    Satisfied Customers:

    21597
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    21597
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
  • http://ww2.justanswer.com/uploads/lyeung1/2010-07-25_032152_tn_IMG_0241.JPG Dr. Y.'s Avatar

    Dr. Y.

    Urologist

    Satisfied Customers:

    18606
    I am fellowship trained specializing in general urology and reconstructive urology.
  • http://ww2.justanswer.com/uploads/docjohn174/2008-12-13_170143_johnask.jpg John's Avatar

    John

    Home Appliance Technician

    Satisfied Customers:

    13453
    Appliance repair business owner for over 43 years.
  • http://ww2.justanswer.com/uploads/MU/multistatelaw/2011-11-27_173951_Tinaglamourshotworkglow102011.64x64.jpg Tina's Avatar

    Tina

    Lawyer

    Satisfied Customers:

    8620
    JD, BBA Over 25 years legal and business experience.
  • http://ww2.justanswer.com/uploads/dermdoc19/2010-09-30_160749_Photo_122807_015.JPG dermdoc19's Avatar

    dermdoc19

    Dermatologist

    Satisfied Customers:

    3911
    30 years practice in general and cosmetic dermatology
  • http://ww2.justanswer.com/uploads/BI/birddoctor/2012-6-22_173214_birddoctor.64x64.png Dr. Pat's Avatar

    Dr. Pat

    Bird Veterinarian

    Satisfied Customers:

    3441
    25+ years working primarily or exclusively with birds
  • http://ww2.justanswer.com/uploads/RY/rydergar/2012-6-6_192240_IMG0328.64x64.JPG Dr. Gary's Avatar

    Dr. Gary

    Cat Veterinarian

    Satisfied Customers:

    3369
    DVM, Emergency Veterinarian, BS (Physiology)