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reallity

2008-03-05T05:07:00.000-08:00

world today. The modern world faces many major problem to which there are no easy solutions.These include unemployment,health,over-population and of course the environment.All have bearing on all our lives,but is the environment really the most important.

If people are unemployed,technological development and other factors mean that the job market is shrinking world-wide and yaoung people have reduced prospects for work.Although this certainly a major threat to people’s well-being,it needs to be addressed by individual goverments rather than globally.

Health is clearly an immportant concerns that effect individuals and the planet as a whole.Even though many illnesses have been eradicated,other remains a threat,and oversue of antibioticts has led to the development of resistant strain bacteria.Nevertheles,on the whole,general health is improving,and in the developing countries medical aid programs are already working towards creating a healthier population.

Over-population has implications for all of us,and improved general health means that people are living longer.However,as with health,there already programs in place implementing measuresto deal with not only a rising population,but also an ageing population.

So what about the environment…? There are urgent issues that need to be faced,including global warming,pollution and the loss of species.unlike other issues discussed,there is no clear global move that can be seen to deal with these problems.Also,unlike the other issues,changes in the environment have direct impact on the whole planet.Climate change and descruction of ecosystem could endanger all life on the planet if not dealt with quickly and at international level.

In conclusion,other problems primary affect only the quality of life,whereas environmental issues affect the actual existance of life it self.It is clear,thereefore,that protecting the environment is the most important roblem facing the

i want to fly

2008-03-05T00:25:00.000-08:00

Do you know actually I want to fly….but I don’t have wing

Maybe you have………………

Please tell me how can you fly………………….?

If you don’t want tell me about that……so I will give inspiration by the story

About wright brother………………….

I think you know this story…….if you forget you can read a short story below.

The question has often been asked why the wright brother were to succed

In an effort in which so many other had failed.

Many explainations have been offered,but there reasons are most often cited.

First,they were a team.Both man worked well together,read the same book

Located and shared information,talked about incassantly about the possiblity of manned flight,and the served as a consistent source of inspiration

And encouragment to each other.

Quit simply,two geniuses are beter than one.

Oh ye………………I like a team above…………

Maybe you have a team…….and I believe you have…………

And if not……don’t be afraid…….you will find it

And your time will give something to this world is like wright brother.

I will continue the story……………..

They were also both gider pilots.Unlike some other engineers who experimented

With theories of flight,orville and wilbur wright experinced the practical side of their work by building and flying in kites and gliders.

Each craft was slightly better than the last,incorating in theknowledge

That they had gained from previous failures.

They had realized from their experiment that the most serious problem and manned flight would be stabilizing and mneuvering the aircraft once it was airbone.

While others concentrated their efforts on the problem of the achieving lift for take-off,the wright brothers focused developing a there axis control for the air craft.By the time that the brothers stated to build an airplane,they were already among the best glider pilots in the world,and they knew the problems of flying firs hand.

In addition,the wright brothers had designed more effective wings for airplane than had been previously engineered.

Using a wind tunnel,the tested more than two hubdred different wing designs,

Recording the effect of slight variations in shape on the pressure of air on the wings.the data forum these experiments allowed the wright brothers to construct a superior wing for their craft.

In spite of all these advantages,how ever,the wright brothers might not have succeded had they not been born at peciesly the oportune moment in history.Attempts to achieve manned flight in the early ninetenth century were domeed because the steam engines that powered the aircrafts were to heavy in proportion to the power that they produced.

But by the end of nineteenth century ,when the brothers were experimenting with engeneering option a relatively light internal combustion engine had already been inventad,and they were able to bring the ratio of weight to power within acceptable limits for flight.

today

2008-03-04T23:50:00.000-08:00

here are three reasons why solar energy generation has not

Developed.

Do you know what is that………………..?

Yes you right.

The first,the cost per watt of solar cell generation is more expensive than

That steam power or nuclear power generation.

Therefore,researchers are stiil loking for ways to make solar cells cheaper.

So…when they will find it………………….?

Yes I believe and sure you heve oppornity to find it.

The second is problem,nature plays a large part in solar cell generation.

I think you give exemple about the probem…….

What is that………………?

Yes I agree with your answer….

Some days are cloudly and rainy”because there is not always fine weather

So I think solar energy canot be granted everyday.no solar energy is

granted at night.

Consequently,solar cells must have the capacity to store energy for use during

these times,and these storage cells are very expensive.

As a result,only in low latitude areas can enough solar energy be granted

Effectively at these times.

Finally,building plants for solar cell generation is extremely expensive.

A very large space is need,and the need for maintenance is constant.

To ilustrate the surface of solar cell plant has cleaned daily.

For all these reasons,it is very difficult to develop solar cell plants

And make solar energy available to the general public for a competitife

Price

Despite all these problems,I believe the day will come whwen we use

Solar energy cells because they are form of clean energy with no polution.