Some people are like caterpillars. Suddenly, they change and then they begin to fly. Other people are like chameleons. They keep changing, but they keep crawling.
Jacob looked at Joseph and saw a good son!
The ten brothers looked at Joseph and saw a useless dreamer!
The travellers looked at Joseph and saw a slave!
Potiphar looked at Joseph and saw a fine servant!
Potiphar’ s wife looked at Joseph and saw a potential boyfriend!
The prison officers saw in Joseph a prisoner!
How wrong were all of them!
God looked at Joseph and saw a Prime Minister of Egypt in waiting!
Don’ t be discouraged by what people see in you!
Be encouraged by what God sees in you!
Never underrate the person next to you because you never know what the Lord has deposited in that person.
Your maid may be a Chief Executive Officer in waiting for a company which shall employ your child.
Your garden-boy may be a president in waiting.
Remember David got the anointing of becoming a King while he was a simple child herding sheep.
Esther was a simple orphaned girl yet she was a Queen in waiting.
PENGUIN SURVIVAL TECHNIQUES
Joseph Stromberg wrote a very interesting piece on the survival techniques of pengiuns that i feel need not be modified for its excellent representation! It goes as follows;
“Antarctica, as you might expect, gets pretty damn cold: Temperatures as low as -40 degrees Fahrenheit are often recorded during the winter.
For the creatures who live there, this extreme cold demands innovative survival strategies that enable the loss of as little heat as possible.
Scientists recently discovered that Emperor Penguins—one of Antarctica’s most celebrated species—employ a particularly unusual technique for surviving the daily chill.
As detailed in an article published today in the journal Biology Letters, the birds minimise heat loss by keeping the outer surface of their plumage below the temperature of the surrounding air.
At the same time, the penguins’ thick plumage insulates their body and keeps it toasty. A team of scientists from Scotland and France recently came to the finding by analysing thermal images (below) of penguins taken at a coastal Emperor breeding colony in Adélie Land, an area of Antarctica claimed by France.
The researchers analysed thermographic images like this one taken over roughly a month during June 2008. During that period, the average air temperature was 0.32 degrees Fahrenheit.
At the same time, the majority of the plumage covering the penguins’ bodies was even colder: the surface of their warmest body part, their feet, was an average 1.76 degrees Fahrenheit, but the plumage on their heads, chests and backs were -1.84, -7.24 and -9.76 degrees Fahrenheit respectively. Overall, nearly the entire outer surface of the penguins’ bodies was below freezing at all times, except for their eyes and beaks.
RADIATION AND CONVECTION
The scientists also used a computer simulation to determine how much heat was lost or gained from each part of the body—and discovered that by keeping their outer surface below air temperature, the birds might paradoxically be able to draw very slight amounts of heat from the air around them. The key to their trick is the difference between two different types of heat transfer: radiation and convection.
The penguins do lose internal body heat to the surrounding air through thermal radiation, just as our bodies do on a cold day.
Because their bodies (but not surface plumage) are warmer than the surrounding air, heat gradually radiates outward over time, moving from a warmer material to a colder one. To maintain body temperature while losing heat, penguins, like all warm-blooded animals, rely on the metabolism of food.
The penguins, though, have an additional strategy. Since their outer plumage is even colder than the air, the simulation showed that they might gain back a little of this heat through thermal convection—the transfer of heat via the movement of a fluid (in this case, the air).
MARCH OF THE PENGUINS
As the cold Antarctic air cycles around their bodies, slightly warmer air comes into contact with the plumage and donates minute amounts of heat back to the penguins, then cycles away at a slightly colder temperature.
Most of this heat, the researchers note, probably doesn’t make it all the way through the plumage and back to the penguins’ bodies, but it could make a slight difference. At the very least, the method by which a penguin’s plumage wicks heat from the bitterly cold air that surrounds it helps to cancel out some of the heat that’s radiating from its interior.
And given the Emperors’ unusually demanding breeding cycle (celebrated in the documentary March of the Penguins), every bit of warmth counts.
Each winter, they trek from inland locations to the coast—walking as far as 75 miles—where they breed and incubate their eggs.
After the females lay eggs, the males incubate them by balancing them on top of their feet in a pouch for roughly 64 days. Since they don’t eat anything during this entire period, conserving calories by giving up as little heat as possible is absolutely crucial.”
Till next month,
I remain truly yours,
Serving since 28th December 2008.
Credits: Tourism Uganda