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Metallica: One (long movie version, 7:40)

What if money was no object?

Molten Lava Melts A Can of Chef-Boyardee

syria-most sought after chess piece

Ohmmade says...

Syria has been producing their own CW's for at least three decades.

The entire world knows this, and you can find their GPS data even on Wikipedia. By all accounts, yes, the Syrian government has deployed CW's on its own people at least three times in the last 18 months.

But, even with all of this knowledge, the US has no legal standing to do anything about it.

Ryan's First Whose Line Scene With Colin

I'll have what the man on the floor's having!

MSNBC Timelapse of the Oklahoma Tornado

Independent Lens: Wonder Women!

Cheech & Chong's History of 420

Whose Line It Is Anyways Videos and Its U.S. Returns to T.V. (Comedy Talk Post)

The Making of Gulp

Color Circle

What happens when Engineers Own Dogs

Whose Line Is It Anyway -- Ryan & Colin - The Burnoose

What Can Frogs See That We Can't?

oritteropo says...

Hmm... now you've made me curious too. I have found a few interesting pages, but nothing specifically about frog vision apart from mentions that it's sensitive.


  • How Stuff Works has a How frogs work article.
  • The Whole Frog Project provides a virtual frog for high school biology students, based on MRI data, mechanical sectioning, and some software to allow visualising of the anatomical structures of the intact animal.
  • The UW Sea grant site has a frogs page with resources for kids + teachers that has an origami frog (among other things).


I'm not quite as sure about the single photon claim. I found a Physicsworld.com article from September 2012 talking about using a single rod cell from a frog eye being used as an extremely sensitive detector which is able to detect a single photon, but according to the original Usenet Physics FAQ (I cite an updated version hosted at math.ucr.edu) human retinas can also respond to a single photon, but have a neural filter to block the signal unless 5 to 9 photons arrive within less than 100 ms.

References

Julie Schnapf, "How Photoreceptors Respond to Light", Scientific American, April 1987

S. Hecht, S. Schlaer and M.H. Pirenne, "Energy, Quanta and vision." Journal of the Optical Society of America, 38, 196-208 (1942)

D.A. Baylor, T.D. Lamb, K.W. Yau, "Response of retinal rods to single photons." Journal of Physiology, Lond. 288, 613-634 (1979)

rich_magnet said:

Also, I'm disappointed. I was hoping to learn about the optical/visual system of frogs.



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