Nature's Children
Moderator: Mike Everman
Nature's Children
Here's a buzz ball cookery technique. The buzzing bee ball rachets up their little heat engines and bake/save the day. I was reading an account of this in the latest Science News magazine. The bees come within 5 degrees of dying but the hornet can't take the heat.
Mark
Japanese Bees Shake and Bake
A ferocious giant hornet is the bane of Japan’s bees. Introduced European bees are defenceless against the monsters; 30 hornets invading a hive can wipe out 30,000 bees in three hours. But Japan’s native bees employ a devastating counterattack. How? They cook it, according to Masato Ono and his colleagues at Tamagawa University. When one hornet finds a bee colony, it leaves a special scent, a pheromone to attract other hornets. But the bees also recognise the pheromone and summon defenders to the hive mouth. When a hornet approaches, about 500 bees engulf it, and with their rapidly vibrating bodies, create a hot seething ball of death. Thermograms show bees reaching temperatures of 118oF (48oC), lethal to the hornet but not the bees.
National Geographic, April 1996
Mark
Japanese Bees Shake and Bake
A ferocious giant hornet is the bane of Japan’s bees. Introduced European bees are defenceless against the monsters; 30 hornets invading a hive can wipe out 30,000 bees in three hours. But Japan’s native bees employ a devastating counterattack. How? They cook it, according to Masato Ono and his colleagues at Tamagawa University. When one hornet finds a bee colony, it leaves a special scent, a pheromone to attract other hornets. But the bees also recognise the pheromone and summon defenders to the hive mouth. When a hornet approaches, about 500 bees engulf it, and with their rapidly vibrating bodies, create a hot seething ball of death. Thermograms show bees reaching temperatures of 118oF (48oC), lethal to the hornet but not the bees.
National Geographic, April 1996
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re: Nature's Children
I love that one!
Ironically, Monty Python's "Meaning of Life" opened with a scene where a glutton gorged until he exploded. Yes, there are no accidents!
Ironically, Monty Python's "Meaning of Life" opened with a scene where a glutton gorged until he exploded. Yes, there are no accidents!
re: Nature's Children
Yes, I saw that Python scene too, a mere wafer thin mint did the character in.
Mark
http://213.130.36.108/site/templates/is ... 12&issue=1
Mark
http://213.130.36.108/site/templates/is ... 12&issue=1
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re: Nature's Children
And now for something completely different. Nature's molecules experimenting as "they" do from time to time.
Mark
http://www.rotten.com/library/sideshow/siamese-twins/
http://www.rotten.com/library/sex/hermaphrodite/
http://www.sciencenews.org/pages/sn_edpik/ls_4.htm
Mark
http://www.rotten.com/library/sideshow/siamese-twins/
http://www.rotten.com/library/sex/hermaphrodite/
http://www.sciencenews.org/pages/sn_edpik/ls_4.htm
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re: Nature's Children
Animal dragster. I don't know why when I click on the link it puts me in the middle of the article, scroll up if you are transported to the middle. In that way you can read it from the start/get go.
Mark
http://www.findarticles.com/p/articles/ ... 4#continue
Mark
http://www.findarticles.com/p/articles/ ... 4#continue
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re: Nature's Children
Thanks for that tip Ben. Simple enough for even me to understand.
Mark
Mark
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re: Nature's Children
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re: Nature's Children
I've been trying to find a sound bite of this frog but was unsuccessful. I read about him a few months ago and I would like to hear how he sounds.
http://www.amnh.org/exhibitions/frogs/f ... igbark.php
5 pictures.
http://worldwidefauna.com/catalog/popup ... =64&page=4
Another few.
http://www.scserp.com/images/BudgettsFrog002.JPG
http://www.animalpicturesarchive.com/vi ... &did=59697
http://www.amnh.org/exhibitions/frogs/f ... igbark.php
5 pictures.
http://worldwidefauna.com/catalog/popup ... =64&page=4
Another few.
http://www.scserp.com/images/BudgettsFrog002.JPG
http://www.animalpicturesarchive.com/vi ... &did=59697
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re: Nature's Children
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re: Nature's Children
My father once told me that some species of crab or crayfish or lobster use pinholes for light refraction instead of lenses. Do you know anything about that?
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Re: re: Nature's Children
Actually, pinhole cameras and camera obscurae work because there is no refraction. The light passes through the pinhole in a straight line from source point to image point. The depth of field is virtually infinite (i.e. everything will appear "in focus" whether the source is near or far away).Bruno Ogorelec wrote:My father once told me that some species of crab or crayfish or lobster use pinholes for light refraction instead of lenses.
If you have a large visual defect (such as severe nearsightedness) and are in a situation where your glasses have been left behind somewhere, you can make yourself a little pinhole in a piece of foil or cardboard and see quite clearly by looking through that (held up close to your eye). Of course, this will only be useful in fairly bright lighting.
L Cottrill
Pinhole glasses
You can also use pin-holes to see clearly underwater ...