The Moon Illusion
2,512,290
Published 2012-10-24
"Look how big the moon is!" you've shouted before. But what if I told you that the moon never really changes size, and it's simply your brain playing a trick? Find out what The Moon Illusion is, and why it happens!
Written and created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz).
TWITTER: www.twitter.com/AsapSCIENCE
FACEBOOK: www.facebook.com/AsapSCIENCE
Music by Mitchell Moffit
www.mitchellmoffit.com/
www.twitter.com/mitchellmoffit
www.facebook.com/mitchellmoffit
Art by Gregory and Mitchell
www.gregorybrownart.tumblr.com/
www.twitter.com/whalewatchmeplz
Some Sources---
1) psycnet.apa.org/psycinfo/1963-02291-001
2) retina.anatomy.upenn.edu/~bart/scriptie.html
3) bit.ly/Tw4Dkv
All Comments (21)
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Hello Science Lovers! We love Vsauce and the whole YouTube Science Community :) - Glad and grateful to have the new subscribers. Welcome!
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Burning question: Why do tissues (and other material as some types of rock) appear darker when wet?
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Thank You Vsauce !!! i love it how all the science channels link up and help each other KEEP IT UP
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The Moon Illusion is a fantastic name for a band
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You mean the moon doesn't change size? It never goes on a diet? What a revelation.
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As an artist, this video gave some insight to the techniques used when drawing things large scale, and putting something nearby like a house for a visual reference that gives the viewer a scope of scale. This moon illusion seems like a perfect real life example of the illusion artists use to create a sense of scale in their paintings. A moon closer to horizon is closer to those buildings, but since those objects are put into perspective and perceived as 'closer' then the illusion is triggered.
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Actually we just has a Super Moon a couple weeks ago so the Moon actually was closer than normal.
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This makes me think about the "moon following my car" when I was younger, could you please explain that, because I still don't get it 😂
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1:15 Would you look at the time, it's HIGH MOON.
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I've tried explaining this to people before and no one ever believes me.
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This was much easier to understand than some of the articles I read online. Really helpful. Thank you so much. :)
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Thanks Vsauce for introducing me to this channel. Thanks AsapSCIENCE for increasing my knowledge even further
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I knew I saw death mountain at 0:50!
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Actually, at sea level the moon appears 12% smaller in apogee than perigee because of the 50 Mm difference in distance, so a not completely correct general statement :)
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Topic for a future video: When I look at a coin under a microscope (with extra illumination from above), the lettering and other features often appear concave, as if it were dipping below the surface rather than raised above it as it actually is. I can usually get the letters to pop out so that I perceive it correctly but sometimes that takes tremendous effort, and yet occasionally I'll see it correctly right away. When I'm perceiving it the wrong way, it really really looks like everything is indented. If I move the light source, the reflections and shadows change as if the light really were falling on a concave surface.
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So many of your videos are relevant to my psychology class!
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The moon is actually much larger than we see it. I think the best way to really appreciate the size of the moon is by actually going there. The next best thing is trying to imagine standing on the moon.
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This may sound weird but here's my question (I've posted it to Vsauce too) if you took into account the size of everything on the universe, and how many there are of everything, what is the average size for a thing? I know it would be a REALLY hard question to answer but if you could get any info on stuff like this, I dunno, it would just be really interesting :)
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The air has a mass and a density just like everything else. As light passes through cold air,and then to hot air, the density changes slightly slowing or speeding up the velocity of the light passing through. This is what creates the waves you see on hot days.
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There's a very interesting effect very similar to this if you drive south on I-5 through Sacramento CA. There is a building on the horizon that shrinks as you get closer and the horizon is filled in.