Saheli*: Musings and Observations
Friday, January 13, 2006
 
Mysteries of the Moon

You've probably noticed that the moon looks a lot bigger when it's near the horizon than when it's high up in the sky. What you probably don't know is that there is, as of today, in the year 2006, no scientific consensus as to why this is so!

There are many hypotheses, of course. They include the idea that we have buildings and trees to compare the moon to at the horizon so it looks relatively bigger (but the illusion persists even on flat, featureless terrain), the idea that there's some sort of atmospheric effect involved (there isn't), the idea that we have a mental map of the sky dome that's flatter than it really is so the same angle translates to a bigger object (maybe part of the explanation, but no real evidence of that), etc. etc. etc.

Here's a page that argues in favor of an "oculomotor micropsia" explanation, that our eyes focus closer when we look up, because there are no visual cues to focus far, so the moon looks bigger because of that. It seems pretty convincing, but here's a page with lots of info on different explanations for the Moon Illusion, which also says that ocolomotor micropsia doesn't make a big enough difference to fully account for the moon illusion. It concludes that we still just don't really know why it happens.

I'm just amazed that something that seems so simple, like it should be basic math or physics, but it actually turns out to be an unsolved mystery!

I almost forgot to add my postly image! Well, here's a picture of a bunch of zebras:



I found it from the Cellar Image of the Day, where there's more information about it, namely, that zebra use their stripes not to blend in with trees so much as to blend in with each other. Apparently, predators have a hard time tracking individual zebras; they just see a big mess of stripes. And who can blame them!
 


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Saheli Datta started this when she was a journalism student at Columbia in New York. Now she lives in the Bay Area. *Old people call me R. New people, call me Saheli. Thanks! My homepage. Specifically, my links. Email me: Saheli [AT] Gmail [dot] Com

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Blogs I Read (Or Try To)
113th Street
american footprints(Nadezhda & Praktike)
ANNA's Diary
Apartment Therapy
Armchair Generalist
Back To Iraq 3.0 (Chris Albritton)
Dave Barry
The Bellman
Mine's On The 45 (Brimful)
Campaign Desk (CJR)
ChennaiCentral
ClimateBoy
Combing the Sphere
Crooked Timber
Daily Dose of Imagery
The Daily Rhino (Bong Breaker)
Dark Days Ahead
The Decembrist
Brad DeLong
Atanu Dey on India's Development (Deeshaa)
Daniel Drezner
Ennis
Ephemera
Cyrus Farivar
Finding My Voice
Forsv
Neil Gaiman
Ganesh Blog
Geeky Chic 2.0 (Echan)
Geomblog
Green Ink!
Heliolith
Alexandra Huddleston
Iddybud (Jude Nagurney Camwell)
Indeterminacy
India Uncut
InSpiteOfEverything
Intel Dump: Phillip Carter et al
The Intersection (Chris Mooney)
Jesus Politics
John and Belle Have a Blog
Mark A. R. Kleiman
KnowProse (Taran Rampersad)
1Locana
Maenad (Nori Heikkinen)
Scott McCloud
Mind Without Borders
Electrolite: Patrick & Teresa Nielsen Hayden
Corey Pein
Political Animal(Kevin Drum, formerly Calpundit)
Kevin G. Powell
QuakeHelp (South Asian Quake)
Radiation Persuasion (Nick)
Reneebop
Rhinocrisy
Scott Rosenberg(Salon.com)
Rox Populi
Felix(&Rhian)Salmon
samVaad
Nick Schager
Idea Spout: Daniel Sanchez
Sepia Mutiny
Amardeep Singh
Snarkmarket (Robin Sloan & Matt Thompson)
South-East Asian Earthquake and Tsunami Blog
SreeTips: New To Sree
Steprous (Bear)
Robert Stribley
Subjunctive.net:klog
Talking Points Memo: Joshua Micah Marshall
Tech Policy
TiffinBox
A Tiny Revolution
To The Teeth
TreeHugger
Unfogged
VatulBlog
Venk@
Manish Vij
Vinod's Blog
War and Piece
Nollind Whachell
Wonkette
WorldChanging
Matthew Yglesias:Old
Yglesias:Tpmcafe
Zoo Station:Reuben Abraham
Ethan Zuckerman
Zwichenzug



Some Categories

Blogs focusing on policy, politics, and national security:
Armchair Generalist
Back To Iraq 3.0 (Chris Albritton)
The Decembrist
Brad DeLong
Daniel Drezner
Eschaton(Atrios)
Green Ink!
Iddybud (Jude Nagurney Camwell)
Idea Spout: Daniel Sanchez
Informed Comment: Juan Cole
Intel Dump: Phillip Carter
The Intersection (Chris Mooney)
Irregular Analyses
Jesus Politics
Mark A. R. Kleiman
Liberals Against Terrorism(Nadezhda & Praktike)
Political Animal(Kevin Drum, formerly Calpundit)
Talking Points Memo: Joshua Micah Marshall
War and Piece
Wonkette
Yglesias:Tpmcafe

Photo Blogs
Daily Dose of Imagery
Ephemera
Alexandra Huddleston
Radiation Persuasion (Nick)
TiffinBox

Columbia Journalism Folks
Apartment Therapy
Back To Iraq 3.0 (Chris Albritton)
Campaign Desk (CJR)
Ranajit Dam
Cyrus Farivar
Alexandra Huddleston
InSpiteOfEverything
Corey Pein
Nick Schager
Zoo Station:Reuben Abraham

Literature, Fiction and Entertainment
Dave Barry
Neil Gaiman
Electrolite: Patrick Nielsen Hayden
Scott McCloud


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