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originally posted by: POPtheKlEEN89
i know what are all of us oatmeal brains thinking?? god forbid the churning core generating the magnetic field have properties that we are yet to understand! oh and for you smart guys who say theyre just representations maybe you should check out how the great whte shark navigates across the ocean.... derp... " pop the kleen they dont see lines they use magnetic north-south representation" national geographic seems to have an idea that great whites follow an actual magnetic bread crumb trail to navigate perfectly along the coast but out of sight of it. national geographic??? " pop the kleen my internet studies are far more accurate in my own head than national shillographic". the sharks name is nicole so you can find it yourself ( navigated the entire indian ocean flawlessly wile visually blind of the coast) but derp all you internet scientists are so derpin derp and derp. what happened to anything is possible? jesus some of you think because your over 23 and your smarter than your friends and family you have precedence to make stick up your butt statements, "ocean currents? rivers in the water blah we all know jesus's kidneys clean the oceans! scientific fact thats why its salty" -common post if ATS existed in 1805 -im no genius but some of you are so blatantly DERP that you belong in the scientific community! you better prove me wrong or you will look so dumb in front of all the other academians!
"Derp" translates to something roughly equivalent to "retard" so he's saying mainstream scientists are retards, as are people who believe in mainstream science, but people like himself who reject mainstream science and watch natgeo to figure out how sharks navigate have more figured out than all the mainstream science retards.
originally posted by: Greggers
Could someone translate this to English for me? I have a vague inclination to be offended.
So they don't sound sure at all that sharks such as Nicole are using the Earth's magnetic field to navigate, thus leaving me with the impression that POPtheKlEEN89 has as many problems comprehending information input as he does expressing himself.
Celestial Guide?
So how did Nicole know where she was going? And what led her back to the very location off South Africa where she was originally tagged?
"The idea that this is happening through some kind of roaming function or happenstance or by following a current is hard to accept," Hueter of the Mote Marine Laboratory said. "You really have to believe these animals are navigating in a purposeful way."
The WCS's Bonfil and his colleagues suggest that the sharks, which are known to have eyesight sensitive to dim light, use visual cues, such as the location of the sun or moon, to navigate.
Data from Nicole's tag show that she spent more than 60 percent of her time swimming right at the surface. She did frequently dive to great depths—sometimes as deep as 3,000 feet (900 meters). Her path, however, was nearly straight.
"We speculate that probably it is using its eyes to find its way to Australia, and the obvious means of doing this is the moon and sun," Bonfil said.
Alternatively, sharks could use Earth's magnetic field to orient themselves, as other animals have been shown to do, Domeier said.
originally posted by: Dr X
a reply to: DeadCat
When you spread iron filings near a magnet, there are distinct lines that they surround and align with. If it was simply a field then the filings would spread uniformly. Physics textbooks conveniently ignore this fact.
originally posted by: Dr X
a reply to: DeadCat
When you spread iron filings near a magnet, there are distinct lines that they surround and align with. If it was simply a field then the filings would spread uniformly. Physics textbooks conveniently ignore this fact.
originally posted by: moebius
originally posted by: Dr X
a reply to: DeadCat
When you spread iron filings near a magnet, there are distinct lines that they surround and align with. If it was simply a field then the filings would spread uniformly. Physics textbooks conveniently ignore this fact.
Nonsense. Iron fillings are magnetized by the field, interact not only with the magnet but also with each other, creating those "lines".
Get yourself a magnetic field sensor and measure the field around a magnet. You will see no lines whatsoever.