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Re: [Phys-l] Lemonade video



Sorry to Brian and William. I didn't say I had an explanation for this, just that it is a cool effect that I had never noticed before. I haven't tried it with other colored straws or cups, but that would be an interesting experiment. I was out of town for a few days and now the lemonade and straw are gone, so we'll have to go back to the restaurant again to get more.

Mike

----- Original Message ----- From: "William Maddox" <maddox@physics.Auburn.EDU>
To: <betwys1@sbcglobal.net>; "Forum for Physics Educators" <phys-l@carnot.physics.buffalo.edu>
Sent: Wednesday, February 02, 2011 12:22 PM
Subject: Re: [Phys-l] Lemonade video


From: WC Maddox

The white insides of the cup is a factor. I saw no effect with clear
container. I saw some effect with white insides but not as bright as
effect in video. Perhaps I need a brighter shade of red.

End Message

On 2/2/2011 12:04 PM, brian whatcott wrote:
I had it in mind there was backscatter from suspended particulates.
I tried with very dilute milk - but my straw was not boldly colored
enough to be convincing.

Brian W

On 2/2/2011 9:21 AM, William Maddox wrote:
From: WC Maddox

Have you tried putting a blue object in the lemonade?

The effect shown in video did not occur with the yellow food dye I used.
The part of a blue object that is in the water does appear green.

End Message


On 2/1/2011 1:24 PM, M. Horton wrote:
My daughther, who loves science, showed me this cool phenomenon the other
day and I had to put a video of it online. She was putting a red straw into
yellow lemonade and the effect was far bigger than I would have imagined.
To the eye, it was even bigger than in this video. It almost looks fake.
We also tried it with a different type of lemonade and it still worked.

Go to this link and it's the second video down:
http://scienceinquirer.wikispaces.com/PhysicsVideos

I've added about 8 more clips to that page as well.

Mike
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_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l

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__________ Information from ESET Smart Security, version of virus signature database 5835 (20110131) __________

The message was checked by ESET Smart Security.

http://www.eset.com