Vulture... I wonder why..!!

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I read a few books of this series. Its cool to find out there are people who think similar to you. I read that vultures are bald for a reason. The thing is they pierce their beak into the prey body in a way their heads totally will move into the prey body. So if there are any feathers etc on the head it will spoil the food. Hence they are bald...

Innovation i guess..!

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I heard from my teacher that Deer can hear even the slightest sound. And at the same time Tiger can walk without making the slightest sound... isn't it cool. Just like creating a program and another program which can hack it. At nights small animals like rats, etc come out of their earth holes and roam around in search of food. The owl too. Its very difficult to catch the prey if it hears any sound. Isn't it? Thats why the feathers of owl are in such a way that it can move fast in air without making a slightest sound... and also another feature is its capable of rotating its head 360 Degrees.


image courtesy - http://animals.howstuffworks.com

Why deserts have sand..?

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In deserts the winds blow at high speeds. Along with them the dirt, light granules of rock are carried. These act as sand paper to the rocks present in the areas. So, as the winds blow across the rocks, it will scrape the rocks surface and generates more granules of rock.... eventually after infinite (long time) years the deserts have become sandy areas..!!

Ice skating

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Ice skating people have shoes will blades. These blades are very sharp (very small area rests on ice) that they create immense pressure (force/area) on the ice surface when they stand over ice. When the pressure is high, the temperature increases and ice melts and forms drops. These drops are very small size that the surface tension can keep it in spherical shape. So they act as if they are some iron balls under the skating blades, which just makes the blade (shoe) to slide over the drops, making the surface almost friction less. So cool huh..!!

Storing food

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People say that storing food in refrigerator is good because it can last longer as there will be no bacteria etc. But the truth is Bacteria is OMNI-PRESENT. It's just the cold temperature in refrigerator effects the low-hormone functions, digestive rate, growth rate... that ultimately help in storing the food for longer period. At room temperature (around 35C) the bacteria's activity is high. Thats why in summer food gets spoiled early.

Ants

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Ants are one of the famous architects of building and also good navigators.. Whenever they go in search of food or something, they release a chemical called Pheromone. These ants go in random manner. As time passes this chemical evaporates and smell will be lost. So while returning they chose the path which has the highest concentration of Pheromone. This way they are able to find not only the shortest path but they won't get lost. Scientists have observed this character and people are trying to incorporate this kind of process in internet stuff... so that the data speed etc etc will be higher. Ants are also great architects in a way they build their homes in an extra ordinary way that the inside temperature is always constant. There will be inlet for cold air and outlets for exhaust warm/hot air.

Pupils dilation

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Eye has an amazing character in responding to light. When we are out in hot sunny day we open our eye very little. The eye sensor creates a reflex action to not to destroy the retina due to exposure to more light. And during dark nights, our pupil area of the eye through which light reaches retina becomes larger so as to send more light and makes capable to see. When there is a power cut and it is dark... your pupil is wide open to allow more light and when the power comes back, we don't feel comfortable as our eye is in a state to allow more light. It takes a little time to our eye later which it adjusts the pupil area to allow sufficient amount of light to make us see things good. People having eye sight is due to insufficient amount of light falling on the retina... they use spectacles to adjust the light to get concentrated on the retina thus capable of looking things clearly..


courtesy - http://www.medterms.com/script/main/art.asp?articlekey=5135

Administering oxygen

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The oxygen is passed through water so as to enrich the gas with humidity without which the wind pipe of human body dries up and becomes uncomfortable and may get complicated.


courtesy - http://www.clusterheadaches.com/O2/index.html

New borns

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When kids take birth, the number of brain cells they get remains constant throughout the life... its just the brain cells grow big but the number doesn't change... whereas the remaining organs have some number of respective cells which in future undergo mitosis to give rise to more number of cells. This is the reason for kids having head size relatively larger compared to an adult.


image courtesy - http://farm4.static.flickr.com

Questions... speak out your answers..

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1. why different plants have different levels of green color on the leaves ?

2. How do we sense gravity ?

3. Why can't we see the moon in circular shape always?

4. Why do we see spikes around a bright light?

5. Why oxygen is sent through water and then administered to patient?

6. Why girls have high pitch voice and men low pitch?

7. Perception problem of eye in observing a fan... camera can catch even more..?

8. Why golf balls have dimples?

9. Why do we see petrol, diesel drums corrugated?

10.Why mercury is in liquid state?

11.Why popping sound when we bend and stress the fingers?


Questions still to come...

Clouds

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I have always wondered why water is able to stay in the atmosphere as clouds.



In the cloud the water droplets are surrounded by water vapor which is lighter than air. Because of this the water is able to float and roam around the world.

Helicopter tail rotor

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We know that helicopter should have a tail rotor to counteract the torque created due to the main rotor blades rotation.

There is a special thing about tail rotor too. For example see the picture, there are two sets of blades (2x2=4). One set has two blades in a line.

why two sets? why can't they put just a 4 blade rotor just like a fan in our room?

The tail rotor rotates with a very high speed. Obviously causes noise. To reduce this they will put two sets of blades which will cut off the noise created by the other set

Why do we YAWN ?

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we do yawn. But why do we yawn?

A theory says that when we sleep our body metabolic rates go down. so we need less oxygen. But when we feel sleepy or tired, this happens we take in less oxygen but our body metabolic rates are still high so our body automatically tries to take in more oxygen. This is through Yawn. This is an involuntary action.

Heavy metals

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How actually these are formed...?

It is assumed that universe has only Hydrogen initially. Because of high pressure and heat, these hydrogen atoms combine to form higher atomic elements. The temperature and pressure at the core of SUN is capable of producing Helium from Hydrogen atoms.

But on Earth we have very high atomic number elements like Titanium, Uranium etc. How come??

These are generated because of the intense pressure and temperature caused by BIG BANG.

Volcanoes

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After the big bang, few big pieces of explosions attracted the others nearby. As they came near and near, their velocities became high and it was like a collision of huge bodies. Guess how many must have collided. This energy produced from the collision was stored in the resulting planet which is EARTH, which melted the core and hence it remains as LAVA.

Pencil fact

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Ever thought why are we able to write with pencil but not a black plastic or some other material...?

Pencil is made of Graphite which is made of carbon atoms held in the form of layer structure as shown in the picture.


These layers can easily slip, slide over. So when we write we just force them to slip and stick to the paper.
:)

Walking the first step

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so what helps us in walking. One thing is certain to feel the gravity. You may not expect this but our ears are the main organs which helps us feel gravity so that we can walk (legs are a means to walk). The ears contain minute hair inside, which act as gravity sensors.


image courtesy - http://gethealthlife.blogspot.com/2009_09_01_archive.html

Water

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We can see through water when the depth is less. When the depth becomes huge, we cannot see through it. Because water absorbs light. Guess what it looks like in oceans ..???

Vibration Damper

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What is it? why is it needed ?

We have seen a lot of sky scrapers... but how are they able to sustain any vibrations due to blowing winds, or small small earth quakes.....???

There is something which is known as Vibration Damper, which essentially means a system which dampens (lowers) the vibrations or their effect. I am here to explain you about a system i came to know...

So the picture here depicts a system in which a heavy mass is held on a rod. The whole setup is in oil. So when the building has vibration effect, the heavy mass oscillates with more amplitude on the rod. The oil obstructs the motion and hence the total energy is dissipated (in increasing the temperature of oil).

simple science - Great application isn't it??

more different dampers can be seen in the following website.

http://www.jssi.or.jp/English/eng-sib/e-sib-source.htm

Science behind the design of Tire

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From my childhood i thought that the Tire design is to have a good grip of vehicle to hold on the land. But how it happens i never knew till now...

So whats behind it?

Basically when a rotating body (surface) for example a tire, is kept on a fluid, due to the velocity at the tire surface, the fluid also gets dragged. In the process, there is lift produced which will make the tire float. For this not to happen, we need to remove the water from below the tire surface...which is done by the grooves, design of Tire.

The others things of the design shown here are basically for better strength, reliability etc.

Pistol Shrimp

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Know what?
A revolutionary concept in science and technology is going to come which is based on the behavior of a pretty small creature of sea.... Pistol Shrimp



Who could have imagined a small creature like that would develop a temperature of 10,000 Degrees Celsius????

The phenomenon- This creates a empty bubble, which on collapsing will create a huge temperature of 10,000 Deg. Celsius. Sadly, because of this, a shock wave is generated which kills the creature itself.

http://www.youtube.com/watch?v=XC6I8iPiHT8

Heat transfer in an Elephant

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We all know the best air conditioner in the world is skin. But how much comfort does it give for some huge creatures like elephant??

Here nature's astounding science can be seen. The elephant ears are so big and the blood vessels can be seen with the naked eye. As the ears flip flap the heat in the body which is brought through blood into blood vessels, is convected to the atmosphere.Thus keeping the body at comfort temperature. The load on the skin is reduced a bit isn't it??

Funda used in hospital

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We all see that oxygen/ artificial breathing is done to a patient, the gas/air is sent through water so that it carries some moisture with it.
- This is done to ensure that the mucous layer in the wind pipe doesn't dry up.
:)


People use oxygen mask but why does it have holes....when tubes are used to send the oxygen clearly the tube doesn't close the total hole.... ever wondered why???
- Pure oxygen is dangerous. Patients are given in air with enriched oxygen.

The wonderful nature

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Whats special about Penguin??

In Penguin, since it lives in very cold places, there has to be a way of saving the heat in the body... otherwise the obvious thing is - it'll be dead. The blood vessels of penguin, veins will be inside arteries. This way they could decrease the heat loss to atmosphere.
:)

The fog in the metro-cities

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Why the fog in the metro-cities is extremely high???

The phenomenon is here...
Metro-cities air is highly polluted because of smoke particles, carbon dioxide,carbo monoxide etc etc..

when the temperature falls down at night, the water vapor in the air condenses on the particles and thus a huge fog is created.

Metal Rubber

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We all know the polymer rubber... but ever heard of Metal rubber???

It took seven years of research,study. Polymer chemists have created a flexible, indestructible material, called metal rubber, that can be heated, frozen, washed or doused with jet fuel, and still retain its electricity-conducting properties. To make metal rubber, chemists and engineers use a process called self-assembly. The material is repeatedly dipped into positively charged and negatively charged solutions. The positive and negative charges bond, forming layers that conduct electricity. Uses of metal rubber include bendy, electrically charged aircraft wings, artificial muscles and wearable computers.