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From: Darwin123 on 1 Mar 2010 19:55 On Mar 1, 3:27 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: > "Darwin123" <drosen0...(a)yahoo.com> wrote in message > > news:6dc32653-9799-4934-815a-04353b89a715(a)z11g2000yqz.googlegroups.com... > On Feb 27, 4:58 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: > > > "vincen...(a)yahoo.com" <datashap...(a)gmail.com> wrote in message > > >news:87a0b5ca-9cdb-42df-84cf-2ef3811e6a71(a)k5g2000pra.googlegroups.com... > > > intelligent mammals living in the sea cannot be aware > > of stars, > > Yes, drosen, that's right. Why is this right? Mammals stick their head out of water or they die. They have eyes to see. Dolphins see out of the water. Otherwise, they couldn't do all those tricks. Why wouldn't dolphins be aware of stars? How do you know dolphins aren't aware of the stars?
From: Henry Wilson DSc on 2 Mar 2010 05:07 On Mon, 1 Mar 2010 16:55:43 -0800 (PST), Darwin123 <drosen0000(a)yahoo.com> wrote: >On Mar 1, 3:27�pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: >> "Darwin123" <drosen0...(a)yahoo.com> wrote in message >> >> news:6dc32653-9799-4934-815a-04353b89a715(a)z11g2000yqz.googlegroups.com... >> On Feb 27, 4:58 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: >> >> > "vincen...(a)yahoo.com" <datashap...(a)gmail.com> wrote in message >> >> >news:87a0b5ca-9cdb-42df-84cf-2ef3811e6a71(a)k5g2000pra.googlegroups.com... >> >> > intelligent mammals living in the sea cannot be aware >> > of stars, >> >> Yes, drosen, that's right. > >Why is this right? >Mammals stick their head out of water or they die. They have eyes to >see. >Dolphins see out of the water. Otherwise, they couldn't do all those >tricks. >Why wouldn't dolphins be aware of stars? They probably would not be because like most animals, they don't see objects that are not moving....but I could be wrong about that. As you probably know, humans developed the property know as 'rapid eye movements' REM. Our eyes are constantly moving so we can see objects that are at rest. >How do you know dolphins aren't aware of the stars? Henry Wilson... ........provider of free physics lessons
From: Androcles on 2 Mar 2010 05:47 "Henry Wilson DSc" <..@..> wrote in message news:9hopo5lae9ak6hijhhotdbm5a02t5qgp9h(a)4ax.com... > On Mon, 1 Mar 2010 16:55:43 -0800 (PST), Darwin123 <drosen0000(a)yahoo.com> > wrote: > >>On Mar 1, 3:27 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: >>> "Darwin123" <drosen0...(a)yahoo.com> wrote in message >>> >>> news:6dc32653-9799-4934-815a-04353b89a715(a)z11g2000yqz.googlegroups.com... >>> On Feb 27, 4:58 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: >>> >>> > "vincen...(a)yahoo.com" <datashap...(a)gmail.com> wrote in message >>> >>> >news:87a0b5ca-9cdb-42df-84cf-2ef3811e6a71(a)k5g2000pra.googlegroups.com... >>> >>> > intelligent mammals living in the sea cannot be aware >>> > of stars, >>> >>> Yes, drosen, that's right. >> >>Why is this right? >>Mammals stick their head out of water or they die. They have eyes to >>see. >>Dolphins see out of the water. Otherwise, they couldn't do all those >>tricks. >>Why wouldn't dolphins be aware of stars? > > They probably would not be because like most animals, they don't see > objects > that are not moving....but I could be wrong about that. > As you probably know, humans developed the property know as 'rapid eye > movements' REM. Our eyes are constantly moving so we can see objects that > are > at rest. > >>How do you know dolphins aren't aware of the stars? > > I told my cat he could use my telescope if he wanted to, but he said he wasn't interested, it didn't smell right. He wants to see underwater instead, he's been that way since he ate the goldfish. Dolphins are different, they swim alongside the yacht because they confuse the mast with a telescope and want to get a peek at stars in daylight. Jumping out of the water to see nothing at night requires perfect eyesight or they would not be able to do it. I use a fish-eye lens in my front door to see visitors and stars. http://www.youtube.com/watch?v=_dmEY2izZpk I wonder if it's called a fish-eye because light refracts at the air-water boundary and you get total internal reflections to which the eye of the dolphin is adapted... http://en.wikipedia.org/wiki/File:Total_internal_reflection_of_Chelonia_mydas_.jpg http://www.olympusmicro.com/primer/lightandcolor/images/refractionfigure9.jpg I'll tell ya, drosen is completely dead from the neck up if he imagines a dolphin has a ghost of a chance of knowing anything about stars, no matter how intelligent it is and he isn't.
From: Darwin123 on 2 Mar 2010 19:12 On Mar 2, 5:07 am, ..@..(Henry Wilson DSc) wrote: > On Mon, 1 Mar 2010 16:55:43 -0800 (PST), Darwin123 <drosen0...(a)yahoo.com> > wrote: > > > > >On Mar 1, 3:27 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: > >> "Darwin123" <drosen0...(a)yahoo.com> wrote in message > > >>news:6dc32653-9799-4934-815a-04353b89a715(a)z11g2000yqz.googlegroups.com.... > >> On Feb 27, 4:58 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: > > >> > "vincen...(a)yahoo.com" <datashap...(a)gmail.com> wrote in message > > >> >news:87a0b5ca-9cdb-42df-84cf-2ef3811e6a71(a)k5g2000pra.googlegroups.com.... > > >> > intelligent mammals living in the sea cannot be aware > >> > of stars, > > >> Yes, drosen, that's right. > > >Why is this right? > >Mammals stick their head out of water or they die. They have eyes to > >see. > >Dolphins see out of the water. Otherwise, they couldn't do all those > >tricks. > >Why wouldn't dolphins be aware of stars? > > They probably would not be because like most animals, they don't see objects > that are not moving....but I could be wrong about that. Most mammals are aware of things that aren't moving. Anyone who plays with a dog knows that the animals recognizes pthers, even when they aren't moving. I heard that frogs can only see something that is moving. The neural circuits in their eyes subtract the stationary background. Other animals use their sense of sight in producing camouflage. Chameleons, flounder and octopuses change color to match their stationary background. Octopuses even change shapes to match nearby stationary objects. I don't think they could do this without recognizing stationary objects. Birds and crocodilians make nests out of sticks, stones and other objects. I don't think they could do this without seeing things. > As you probably know, humans developed the property know as 'rapid eye > movements' REM. Our eyes are constantly moving so we can see objects that >are at rest. I don't know if this is the reason for our rapid eye movements. I know that rapid eye movements have been studied for a few decades. I never heard the conclusion that it is for seeing objects at rest. > > >How do you know dolphins aren't aware of the stars? I asked Androcles. He said that marine mammals aren't aware of the stars. He gave no reason, but referred to them as being adapted to their environment. I don't see how adapting to a marine environment automatically means ignoring the stars, especially by creatures that have to poke their head out of the water. He may be right, but I asked him how he knew.
From: Inertial on 2 Mar 2010 19:51 "Darwin123" <drosen0000(a)yahoo.com> wrote in message news:83cea469-8fa8-400c-8dd6-ab5883938bce(a)t41g2000yqt.googlegroups.com... > On Mar 2, 5:07 am, ..@..(Henry Wilson DSc) wrote: >> On Mon, 1 Mar 2010 16:55:43 -0800 (PST), Darwin123 <drosen0...(a)yahoo.com> >> wrote: >> >> >> >> >On Mar 1, 3:27 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: >> >> "Darwin123" <drosen0...(a)yahoo.com> wrote in message >> >> >>news:6dc32653-9799-4934-815a-04353b89a715(a)z11g2000yqz.googlegroups.com... >> >> On Feb 27, 4:58 pm, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: >> >> >> > "vincen...(a)yahoo.com" <datashap...(a)gmail.com> wrote in message >> >> >> >news:87a0b5ca-9cdb-42df-84cf-2ef3811e6a71(a)k5g2000pra.googlegroups.com... >> >> >> > intelligent mammals living in the sea cannot be aware >> >> > of stars, >> >> >> Yes, drosen, that's right. >> >> >Why is this right? >> >Mammals stick their head out of water or they die. They have eyes to >> >see. >> >Dolphins see out of the water. Otherwise, they couldn't do all those >> >tricks. >> >Why wouldn't dolphins be aware of stars? >> >> They probably would not be because like most animals, they don't see >> objects >> that are not moving....but I could be wrong about that. > Most mammals are aware of things that aren't moving. Anyone who > plays with a dog knows that the animals recognizes pthers, even when > they aren't moving. > I heard that frogs can only see something that is moving. The > neural circuits in their eyes subtract the stationary background. > Other animals use their sense of sight in producing camouflage. > Chameleons, flounder and octopuses change color to match their > stationary background. Octopuses even change shapes to match nearby > stationary objects. I don't think they could do this without > recognizing stationary objects. > Birds and crocodilians make nests out of sticks, stones and other > objects. I don't think they could do this without seeing things. >> As you probably know, humans developed the property know as 'rapid eye >> movements' REM. Our eyes are constantly moving so we can see objects that >> >are at rest. > I don't know if this is the reason for our rapid eye movements. I > know that rapid eye movements have been studied for a few decades. I > never heard the conclusion that it is for seeing objects at rest. That's because it is bullshit that Henry made up. There are eye movements that are indeed rapid (but not called REM .. that refers to a stage of sleep where there is involuntary rapid eye moement) that allow us to shift our gaze around a scene so we can take in the detail ... as we only have 'high definition' vision in a very narrow field of view (the rest is low), so to get a detailed image, we need to keep moving our eyes from point-of-interest to point-of-interest. There's also some less rapid eye movements, such as tracking of moving objects, or adjusting the eye when we change the angle of our head of body so that we can still focus on a given part of a scene. >> >> >How do you know dolphins aren't aware of the stars? > I asked Androcles. He said that marine mammals aren't aware of > the stars. He gave no reason, but referred to them as being adapted to > their environment. I don't see how adapting to a marine environment > automatically means ignoring the stars, especially by creatures that > have to poke their head out of the water. He may be right, but I asked > him how he knew. Androcles obviously communes with the sea creatures.
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