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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.

My band (as per sifted video) is up for a national award! (Cinema Talk Post)

My band (as per sifted video) is up for a national award! (Cinema Talk Post)

TheSluiceGate says...

Hey all,
I've been off doing a gig, but thanks so much to all of you that contributed to front paging this. Regardless of how many video views or votes this turns into I'm so grateful that so many people have seen this SiftTalk post.

Special thanks to Lamb, Jonny, Luther, and Mr Prozac.

Thanks sifters all!

The Confused Lamb

Cute Little Lamb Is A Bit Lost

Cute Little Lamb Is A Bit Lost

Cute Little Lamb Is A Bit Lost

Jingle Goats

Jingle Goats

Bomb The Bass - Bug Powder Dust

Bang Bang Lambs

Out of Control? [BBC documentary, 2012]

swedishfriend says...

What this really means is that your slower, language-based tiny chunk of brain should probably be more aware of what the rest of the brain thinks about what is going on and what to do about it. Your subconscious is you but a billion times faster and many times stronger so it is a bit sad that it is also like a stranger to us.

"You might pray to god or say it is destiny but I think we are just hiding all that we can be. Are we not wise enough to give all we are? Surely we're bright enough to outshine the stars." -Wise Enough by Lamb

Jesus H Christ Explains Everything

messenger says...

@shinyblurry

In the beginning, God created Adam and Eve … to maintain order in His kingdom.

I can't tell if you're disagreeing or off topic. I'll state again what I think I have heard you say or suggest: God gave us humans free will. He loves us, and knew what would be the best way for us to live, so, out of love, he gave us a set of laws to follow for our own good. In order to encourage us to follow those laws, he established hell as punishment for choosing to violate those laws: the worst possible eternal torture.

Have I made any mistakes in there?

[me:]What’s wrong with robots? You said elsewhere it’s because god wouldn’t want robots. How can he want anything? He’s perfect. Does his own existence not satisfy him? Is he lacking something? Was he bored and lonely? Are we his pets?

[you:]God created not out of need, but out of the abundance of His love.


I said and I meant "want" (not "need"). You've said many times that God wanted/desired us to exist and behave in certain ways, and you used words like "(un)satisfactory" to describe God's opinion of us/robots, and so forth. Any understanding of those words necessarily implies a lack of something. You cannot want/desire/be unsatisfied unless that thing addresses your lack of something that would make you better off in some way. Every single human action can be attributed to a lack or want (or need). But a perfect all-powerful God would have none of these. He would be at Nirvana, a persistent state of satisfaction with nothing but the self. So "want" and "perfect" make a contradiction. Can you address either my founding statements or my logic?

[me:]You didn’t answer my questions. I know the stated purpose of sending Jesus. My question is why the situation required exactly that. Surely God, at some point, decided, "Well, they’re bad, and I want to get closer, and the exact thing required is for me to have a son, for that son to be a perfect human, for him to preach for three years and then get executed by the other humans, and then we can be closer." God decided something like that. It’s a direct implication of saying that God created everything and that this was necessary.

[you:]Jesus was the lamb slain before the foundation of the world.

Rev 13:8 And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world.


Again, you didn't answer. Why did it have to be Jesus? God is all-powerful, so he could have sent a puppy or a bamboo plant or a paramecium to bear our sins and be killed. Or he could have decided it required 40 children of his to be sacrificed. Why just one man?

Before the world began, God knew that He would need to send His Son.

Because being in the image of God isn't about what God looks like, it is about being imbued with His personal attributes. We resemble Him in our better nature, not our appearance.

Cool. Is there Biblical reason to assert that this is the correct interpretation of "in his image"?

[me:]What I’m getting at is the arbitrariness of the consequences … forever, and they lost paradise. For one sin?

[you:]I understand what you're saying. You're not going to see the picture before you connect all of the dots. I'll keep supplying you the dots as I am able. I think I explained this particular question to you in more specific detail this time around, as to why the separation occurred.


I'm asking you all this to see if there's ever going to be an end or a logic to the trail of dots without having to presuppose the conclusion that gave rise to the dots in the first place. Every dot seems to give rise to another dot. Like you say about secular morality, it's a recursive chain of dots off to infinity, each dot raising more questions than it answers. Such a system would, by literal definition, not be rational: if it goes on to infinity, then it can never be rationalized.

He knew before He created that His creation would rebel at some point, and He took the necessary steps to reconcile it back to Himself at the end of time. He didn't screw up, but He did create beings capable of screwing up. To allow for the real possibility of good, He also had to allow for the real possibility of evil.

Are humans satisfying to God in whatever capacity we were created?

When scripture says "the law" what it is reffering to is the Mosaic law that was given at Mt Sinai … What we had in the beginning was not a law, but simply a choice.

So humanity had no laws from God for all that time (hundreds or thousands of years) until Mt. Sinai? We were allowed to do anything at all we wanted without fear of any punishment from God?

Jesus H Christ Explains Everything

shinyblurry says...

By your rhetorical suggestion: God created us with free will, then he created laws for us because following them is good for us and he loves us, then he said there would be consequences for not following those laws to encourage us to follow them because he loves us, then he determined that the consequences would be the worst possible thing that could happen, far worse than the real-life consequences for breaking the rules… because he loves us? It doesn’t add up. Don't give me some reductionist "let all rapists go free" argument. There's no way to explain the extreme severity of the consequences for breaking the law if the law itself was created so we would be better off. See?

In the beginning, God created Adam and Eve to be completely dependent on Him for everything. They relied upon God to make their decisions for them, and tell them what good and evil was. However, because He wanted His creatures to be free to love Him, ie just not just forced to obey Him, He gave them one command. That command was not to eat of the tree of the knowledge of good and evil. He told them that in the day they ate of it they would surely die.

What lay in the fruit of that tree for Adam and Eve was their own autonomy. The fruit represented an independence from God to decide on their own what is good and evil. Rather than sitting at Gods feet and learning from Him, they would become a law onto themselves through their own judgment. What eating this fruit did was destroy their innocence forever. It ruined the perfect relationship and fellowship they had with God by turning them into rebels who would make choices apart from God.

So, rather than the law being given for the reasons you are saying, it was given to offer them a choice between obedience to God and personal autonomy. The consequences of breaking that law not only changed their nature but brought sin and death into the world. God draws the line at His standard for goodness, which is perfection. It is a zero tolerance policy for rebellion, not only for moral guidance, but to maintain order in His kingdom.

What’s wrong with robots? You said elsewhere it’s because god wouldn’t want robots. How can he want anything? He’s perfect. Does his own existence not satisfy him? Is he lacking something? Was he bored and lonely? Are we his pets?

God created not out of need, but out of the abundance of His love. He regards us as His offspring, not His pets.

Act 17:22-31

Then Paul stood in the midst of Mars' hill, and said, Ye men of Athens, I perceive that in all things ye are too superstitious.

For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN GOD. Whom therefore ye ignorantly worship, him declare I unto you.

God that made the world and all things therein, seeing that he is Lord of heaven and earth, dwelleth not in temples made with hands;

Neither is worshipped with men's hands, as though he needed any thing, seeing he giveth to all life, and breath, and all things;

And hath made of one blood all nations of men for to dwell on all the face of the earth, and hath determined the times before appointed, and the bounds of their habitation;

That they should seek the Lord, if haply they might feel after him, and find him, though he be not far from every one of us:

For in him we live, and move, and have our being; as certain also of your own poets have said, For we are also his offspring.

Forasmuch then as we are the offspring of God, we ought not to think that the Godhead is like unto gold, or silver, or stone, graven by art and man's device.

And the times of this ignorance God winked at; but now commandeth all men every where to repent:

Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.

But he forgave us all our sins through the sacrifice of his son. Was that a compromise of his integrity? It seems he does choose to forgive us, at least once every 4000 years or so.

No, because He laid all of our sin on His Son, who bore the punishment we deserve. It is not a compromise of His integrity so long as the sin has been paid for.

Romans 4:25

He was delivered over to death for our sins and was raised to life for our justification

You didn’t answer my questions. I know the stated purpose of sending Jesus. My question is why the situation required exactly that. Surely God, at some point, decided, "Well, they’re bad, and I want to get closer, and the exact thing required is for me to have a son, for that son to be a perfect human, for him to preach for three years and then get executed by the other humans, and then we can be closer." God decided something like that. It’s a direct implication of saying that God created everything and that this was necessary.

Jesus was the lamb slain before the foundation of the world.

Rev 13:8 And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world.

Before the world began, God knew that He would need to send His Son.

If you want to know more about what it means in the image of God, read this:

http://www.gotquestions.org/image-of-God.html

It told me almost nothing. It says that the definition of "the image of God" is everything that makes us different from other animals, and everything intangible about us, as if that’s what God looks like. It compared naming pets and enjoying music to being God. Weird.


Because being in the image of God isn't about what God looks like, it is about being imbued with His personal attributes. We resemble Him in our better nature, not our appearance.

What I’m getting at is the arbitrariness of the consequences and why God would have created such random consequences. Look at them with a critical eye, if you can: Adam and Eve committed one sin, and for that their nature was changed forever, and that of their descendents forever, and they lost paradise. For one sin? You believe that God created such a heavy consequence for the first offence ever committed by innocent people – and people without "knowledge" mind you, because they hadn’t eaten the fruit yet. I cannot.

I understand what you're saying. You're not going to see the picture before you connect all of the dots. I'll keep supplying you the dots as I am able. I think I explained this particular question to you in more specific detail this time around, as to why the separation occurred.

God got to enjoy his creation for about 45 minutes before it screwed itself up, and from then on we’ve been a disappointment to him. Yet, as you’ve stated elsewhere, God created us for his pleasure. He knew what would happen, so he screwed up. He couldn’t even create himself a pleasing race of pets. Dogs have free will, understand good and bad, and are extremely pleasing as companions. Why couldn’t God create as good for himself as he did for humans? The whole story doesn’t hold water.

He knew before He created that His creation would rebel at some point, and He took the necessary steps to reconcile it back to Himself at the end of time. He didn't screw up, but He did create beings capable of screwing up. To allow for the real possibility of good, He also had to allow for the real possibility of evil.

But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.

That's a defence mechanism against whatever the opposite of apologia is. Reason, maybe.


Or it's absolutely true.

The only consistent model is that God himself created sin and evil by creating the laws, because if he hadn't created the laws, there would be no sin or evil in the world. This understanding is consistent with your statement A and in spirit with C, if you understand C to mean, "We created evil by breaking his law".

Sorry, I should have clarified this a lot more. When scripture says "the law" what it is reffering to is the Mosaic law that was given at Mt Sinai. This law was given because of sin, and sin was already in the world at that time. This really goes back to the beginning with what I described earlier. What we had in the beginning was not a law, but simply a choice. It was given not to keep us from evil but to give us freedom to choose to obey Gods will. You can't freely obey someone if you don't have a choice not to do it. You can't love someone without the choice not to love. The law came into play after all of this, and that is a whole other discussion.

>> ^messenger:

stuff

Dog terrified of low-fat lamb jerky

KrazyKat42 says...

>> ^Dread:

My guess is that there is something in the jerky that he is smelling as very unhealthy or bad. Notice his reaction only comes after he smells the jerky. Personally I would not touch that shit with a ten foot pole either after seeing his reaction.
If the apocalypse came I would roam around with a pooch, and I would present him with any food I found. If he wouldn't eat it you can bet your ass (and I guess mine)I wouldn't.
Unless we have an example of a similar breed of dog that is not reacting with such aversion to the same product.
The only other option is that he for some reason has a phobia of something to do with the jerky. Which I find to be a possibility but incredibly unlikely.


True. If my dog wouldn't eat it there is no way I would eat it. Dogs eat anything. There must be something seriously wrong with that jerky.



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