This fascinating cephalopod was given the common name of blanket octopus because of its flowing webbing connected between its dorsal and dorsolateral arms, resembling a large blanket, as displayed by this adult female. Females may reach 2 metres (6.6 ft) in length, whereas the tiny males are at most a few centimeters long. The males have a specially modified third right arm which stores sperm, known as a hectocotylus. During mating, this arm detaches itself and crawls into the mantle of the female to fertilize her eggs. The male dies shortly after mating. The females carry over 100,000 tiny eggs attached to a sausage-shaped calcareous secretion held at the base of the dorsal arms and carried by the female until hatching. Blanket octopuses are immune to the poisonous Portuguese man o' war, whose tentacles the male and immature females rip off and use for defensive purposes. Like many other octopuses, the blanket octopuses uses ink to intimidate potential predators.Also, when threatened, the female unfurls her large net-like membranes that spread out and billow in the water, greatly increasing her apparent size.
Wednesday, 16 October 2013
Blanket Octopus
This fascinating cephalopod was given the common name of blanket octopus because of its flowing webbing connected between its dorsal and dorsolateral arms, resembling a large blanket, as displayed by this adult female. Females may reach 2 metres (6.6 ft) in length, whereas the tiny males are at most a few centimeters long. The males have a specially modified third right arm which stores sperm, known as a hectocotylus. During mating, this arm detaches itself and crawls into the mantle of the female to fertilize her eggs. The male dies shortly after mating. The females carry over 100,000 tiny eggs attached to a sausage-shaped calcareous secretion held at the base of the dorsal arms and carried by the female until hatching. Blanket octopuses are immune to the poisonous Portuguese man o' war, whose tentacles the male and immature females rip off and use for defensive purposes. Like many other octopuses, the blanket octopuses uses ink to intimidate potential predators.Also, when threatened, the female unfurls her large net-like membranes that spread out and billow in the water, greatly increasing her apparent size.
Tibet Mastiff (Dog looks like Lion)
Tibetan Mastiffs can be black, golden brown, or grey. Some Tibetan Mastiffs have longer hair on the head and neck, giving the appearance of a mane. In China, this variety is referred to as the ‘Lion Head’ Tibetan Mastiff, with the shorter haired variety being known as the ‘Tiger Head’ Tibetan Mastiff.The Tibetan Mastiff normally has a shoulder height of 61-66 cm (24-26 in) and weighs 45-72 kg (100-160 lbs), though a few stand up to 80 cm (31 in) and weigh as much as 110 kg (242 lbs). He is originating with nomadic cultures of Tibet, China, Himachal Pradesh, Uttarakhand, Ladakh and Central Asia.
Tuesday, 15 October 2013
Tuesday, 8 October 2013
A Patato has More Chromosomes than us.
Potato has More Chromosomes than
Humans.
A
chromosome is an organized structure of DNA (This is what makes you unique),
protein, and RNA found in cells.
Even though We are one of the most complex organisms in the world, and that this would make you think we have a lot of chromosomes, we have less than something as simple as a potato!
We have only 46 Chromosomes and Potato has 48 Chromosomes.
Even though We are one of the most complex organisms in the world, and that this would make you think we have a lot of chromosomes, we have less than something as simple as a potato!
We have only 46 Chromosomes and Potato has 48 Chromosomes.
Wednesday, 18 September 2013
Cthulhu Larva
The Deep Sea Holothurian, also known as an abyssal sea cucumber, sounds like a boss from Final Fantasy and looks like something Khan would attach to the brain of a Starfleet officer.The Cthulhu Larvae are most generally found on Demerara Abyssal Plain, but can be in abundance most anywhere except the North Atlantic Ocean. aka the SEA PIG Cthulhu Larvae are not cosidered an endangered species.The largest concern for the species is deep-sea trawling. Since the cthulhu larvae travel in groups of 300-600.Cthulhu Larvae are almost always seen facing in the same direction, towards the current.
It is only a few inches long, has no face and eats mud, which is exactly how we described our genitalia on Match.com. The abyssal sea cucumber is one of the most successful ocean dwelling species, presumably because any predator would take one look at this thing and run home to sleep with the lights on in their parents’ room.
Friday, 30 August 2013
Fleas can jump up to 200 times their height. This is equivalent to a man jumping the Empire State Building in New York.
1. Fleas have four life stages: egg, larva, pupa, biting adult.
2. Fleas feed on the blood of their host -- humans, birds, reptiles, and wild and domestic animals.
3. The female flea can lay 2,000 eggs in her lifetime.
4. A flea can live more than 100 days without a blood meal.
5. The female flea consumes 15 times her own body weight in blood daily.
6. A flea can jump up to 8 inches high, or approximately 150 times its own height. That's like if you could leap over tall buildings in a single bound.
7. Pets with fleas may develop anemia, tapeworms or intense bouts of itching (pruritus).
8. Some pets may develop an allergy to flea saliva, which causes severe irritation and itchiness.
9. The best way to check for fleas is with a flea comb.
10. Even though there are more than 2,000 known species and subspecies of fleas, one flea species -- the cat flea -- accounts for most of the dog and cat flea cases found in the U.S.
Saturday, 10 August 2013
Processing speed of the human brain compared to computer
Processing Power and Speed
The human brain - We can only estimate the processing power of the average human brain as there is no way to measure it quantitatively as of yet. If the theory of taking nerve volume to be proportional to processing power is true we then, may have a correct estimate of the human brain's processing power.
The human brain - We can only estimate the processing power of the average human brain as there is no way to measure it quantitatively as of yet. If the theory of taking nerve volume to be proportional to processing power is true we then, may have a correct estimate of the human brain's processing power.
It is fortunate that we understand the neural assemblies
is the retina of the vertebrate eye quite well (structurally and
functionally) because it helps to give us a idea of the human brain's
capability.
The retina is a nerve tissue in the back of the eyeball
which detects lights and sends images to the brain. A human retina has a size
of about a centimeter square is half a millimeter thick and is made up of 100
million neurons. Scientists say that the retina sends to the brain,
particular patches of images indicating light intensity differences which are
transported via the optic nerve, a million-fiber cable which reaches
deep into the brain.
Overall, the retina seems to process about ten
one-million-point images per second.
Because the 1,500 cubic centimeter human brain is about
100,000 times as large as the retina, by simple calculation, we can estimate the
processing power of a average brain to be about 100 million MIPS (Million
computer Instructions Per Second ). In case you're wondering how much speed
that is, let us give you an idea.
1999's fastest PC processor chip on the market was a 700
MHz pentium that did 4200 MIPS. By simple calculation, we can see that we would
need at least 24,000 of these processors in a system to match up to the total
speed of the brain !! (Which means the brain is like a 168,0000 MHz Pentium
computer). But even so, other factors like memory and the complexity of the
system needed to handle so many processors will not be a simple task. Because
of these factors, the figures we so childishly calculated will most probably be
a very serious underestimate.
The computer - The
most powerful experimental super computers in 1998, composed of thousands or
tens of thousands of the fastest microprocessors and costing tens of millions
of dollars, can do a few million MIPS. These systems were used mainly to
stimulate physical events for high-value scientific calculations.
Here, we have a chart of processor speeds for the past
few years.
|
Year
|
Clock Speed (MHz)
|
Instruction Rate (MIPS)
|
|
1992
|
200
|
200 (400)
|
|
1993.5
|
300
|
300 (600)
|
|
1995
|
400
|
800 (1600)
|
|
1996.5
|
500
|
1000 (2000)
|
|
1998
|
600
|
2400 (3600)
|
|
1999.5
|
700
|
2800 (4200)
|
|
2000
|
1000
|
?
|
From the chart above, we can observe some break through s
in microprocessor speeds. The current techniques used by research labs should
be able to continue such improvements for about a decade. By then maybe
prototype multiprocessor chips finally reaching MIPS matching that of the brain
will be cheap enough to develop.
Improvements of computer speeds however have some
limitations. The more memory it has, the slower it is because it takes longer
to run through its memory once. Computers with less memory hence have more
MIPS, but are confined to less space to run big programs. The latest, greatest
super computers can do a trillion calculations per second and can have a
trillion bytes of memory. As computer memory and processors improve, the
Megabyte/MIPS ratio is a big factor to consider. So far, this ratio has
remained constant throughout the history of computers.
So who has more processing power ?
By estimation, the brain has about 100 million MIPS worth of processing power while recent super-computers only has a few million MIPS worth in processor speed. That said, the brain is still the winner in the race. Because of the cost, enthusiasm and efforts still required, computer technology has still some length to go before it will match the human brain's processing power.
By estimation, the brain has about 100 million MIPS worth of processing power while recent super-computers only has a few million MIPS worth in processor speed. That said, the brain is still the winner in the race. Because of the cost, enthusiasm and efforts still required, computer technology has still some length to go before it will match the human brain's processing power.
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