The National Geographic Magazine, Volume 207, Issues 4-6National Geographic Society., 2005 - Geography |
From inside the book
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Page 103
... light of an underwater strobe . In natural light at 80 feet deep ( above ) this fish's violet side patch signals his virility to females and warns males to stay away . Cells in the patch make it glow in UV ( above right ) , but it's not ...
... light of an underwater strobe . In natural light at 80 feet deep ( above ) this fish's violet side patch signals his virility to females and warns males to stay away . Cells in the patch make it glow in UV ( above right ) , but it's not ...
Page 104
... light , including UV and polarized . ( Humans detect only four channels . ) Each tiny dome on the sur- face is a separate cornea that admits light . The cornea con- nects to a crystalline cone and a photoreceptor called a rhabdom ; all ...
... light , including UV and polarized . ( Humans detect only four channels . ) Each tiny dome on the sur- face is a separate cornea that admits light . The cornea con- nects to a crystalline cone and a photoreceptor called a rhabdom ; all ...
Page 117
... light has to be con- stant as well . No one can catch up with a light beam . But if the speed of light is identical for all observers , something else has to give : absolute time and space . Einstein concluded that the cos- universe led ...
... light has to be con- stant as well . No one can catch up with a light beam . But if the speed of light is identical for all observers , something else has to give : absolute time and space . Einstein concluded that the cos- universe led ...
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