Why Does Heart Rate Increased With Infection

With i. .. Fission!

Since the industrial revolution in energy consumption of the company has been exponential. Today we see life is inconceivable without it, but how to meet the growing demand? This question is one of the larger fields of action with physicists from around the world today (yes, physicists are still useful to society, fortunately for those of us rolling stone now in the race.)

can say that there are 2 requirements when new sources of energy. On the one hand, the growing needs unfailingly make it necessary to find sources that can provide large amounts of energy at a reasonable price.
Moreover, every day becomes stronger the need to secure energy sources clean (we had better).

Come to the point. We've all heard of the fission and nuclear fusion (if you are wanting to complicate our lives with such similar term ...), but what is each?

Today we'll talk a bit about nuclear fission :
An atom consists of a dense nucleus (protons and neutrons) and a bunch of really tiny pellets that are dancing around (electrons). If we take another particle (usually a neutron) and fired at the atom's nucleus then, with a little luck we can destabilize the core, causing it to split in two. It's like if you throw with great force against a a marble pyramid marbles.
The trick is that to split the nucleus, releasing a large amount of energy we can harness and other neutrons, which will shoot in all directions, colliding with other nuclei, which also will break and fall off more energy and neutrons that will break atoms, we have created a chain reaction , and so we have much more energy than they have "used" to launch the first neutron.
But it serves any atom to obtain energy by fission. The larger a nucleus, the less stable and more energy released when they break. So go running to the periodic table to find the element occurring naturally (no need to create it artificially) that has the core fatter and we ran ... the Uranium . Uranium is ideal for nuclear fission and the possibility of fissions was discovered in 1939 (while in Spain decided to stop shooting us at the head stones ...).

When a nucleus fissions occur around 200 MeV (megaelectrón-Volt: A unit of energy as joules or calories ...). Vale, 200, a very beautiful, and?
Well, the energy released in a normal combustion is about 4 eV (not mega) for every molecule of oxygen!
mega The prefix indicates a million, so fission releases 50 million times more energy than the combustion !

But as always, the whole mountain is oregano, and there is a but. And that but are the products of the reaction: the chemical elements are created, unfortunately, are not stable and decay, are radioactive . And living tissues do not tend to like too much radiation they produce. Therefore, it is enclosed in special containers and stored in radioactive dumps. But of course, clean life of these elements is sooo long and we can not avoid no longer radioactive.

In summary, we have an extraordinary source of energy, but that does not meet the second requirement mentioned at the beginning, is contaminant.


In the next article we will understand a little better what the merger (with U). I remind you that if you want to comment on something you can do it, nay, you must do! ;)

White Spot Between Jaw

The scientific method: the great unknown?

Today we will discuss the scientific method. For very scientific sounding (It is), it is not only a formal generalization of the intuitive way in which all reasoning. Let me explain:

Let's give a ball to a young child who has never seen anything like it. What will the child?

First, approach the ball, look and begin to play. You will likely fall to the ground or throw. Then you will realize that the ball bounces. The child will see this as a good way to have fun and break all the windows that caught on their way, so start thinking in the functioning of the magic ball. Immediately see that the stronger the boat, the higher will come later, depending on the angle at which the pull, the ball will go in one direction or another. So the child believes he has found a series of guidelines that seems to follow the ball in almost any situation. Our researcher will then start small check if your idea of \u200b\u200bhow the ball is correct, changing some conditions: try it bounce against a sloping surface, the pull against the walls and of course against his innocent brother (you know, research is sacrificed). After a number of tests will realize if your idea is correct , ie if the ball will go where he thinks it will go. It is at this point that the child will catch the ball with ease, since he alone has developed a theory on the operation of the ball. Is able to predict quite accurately the trajectory of the ball before throwing.

child probably does not think much of all this, but every step made subconsciously, it is rational and that is the logical form of action. The child will never believe blindly for himself that the ball will fly, and why not throw a bridge (if you appreciate it) before making sure that you will not waste your precious toy.

Well, this kid just tell all of us a key to the scientific development of mankind. The little guy, without knowing, we just explain each of the parts of the scientific method:

1. Comment : These directions apply to a phenomenon to have a first contact (the child looks at the ball, touches it and probably sucks, try to apply all their senses to learn more about the ball. Then see what happens to throw).

2. Induction : This step is, from observation, draw a sort of general principle about the phenomenon (the small begins to get an idea of \u200b\u200bthe functioning of the ball.)

3. Hypothesis: An idea, so far without solid foundations, the experimenter takes on the behavior of the phenomenon. Itself is not strong, it is not something that has been proven (in our case would be the guidelines that the child believes that follows the ball to bounce).

4. Experimentation : This is the most important of the method. Try to test the validity of the hypothesis (the child is changing the terms on the ball bouncing to determine whether they conform to what he thinks will do.)

5. Demonstration or Refutation : After a large number of experiments, changing the conditions, if the hypothesis is tested meets the actual behavior of the phenomenon or whether it behaves differently. In this case we must go back to the first point and begin again the process to modify the hypothesis (the child checks to his satisfaction that his hypothesis was correct).

6. Conclusions : Thinking about the whole process creates a theory. So we see that a theory is something that I DO have a solid foundation , contrary to the hypothesis.

Thus a child without initial idea has been achieved, through the scientific method, become a master of the ball!

The scientific method is no infallible tool. There has been, is and always will be radical changes in the foundation of all sciences, but undoubtedly the best method we have for understanding the world around us.

So you know, dear readers, when you enfrentéis to a new situation, let out the inner child and let him solve the problem for you;)

Pressure Points In Neck To Fall Asleep

"In this let him who is a skeptic ..."

Today

Direct Tv Dvd Recorder

The Big Bang, the dielectric and pigeon poop

"Where better than at the beginning to enter the field?
So, we opened the first article on science by the principle of principles, the Big Bang or Big Bang. Another day talk about the origin of the term "Big Bang "

all began about 14 billion years, there is nothing. And when I say everything, I mean EVERYTHING. At that time all matter and energy in the universe were concentrated at a single point, smaller than imaginable and a higher density of embracing (it was what is called a singularity ). That tiny dot that exploded and created particular time is both time and space, therefore the question of what had before the Big Bang? meaningless, because the concept is linked before the time, did not exist. From that time began to appear all particles and the long and tortuous process of expansion.

But how do we know that This is just a nice fairy tale?

sure all of you have ever thrown a firecracker. Kindle the wick and you turn away from a safe distance. When the firecracker explodes, the chemical energy contained the powder is converted into other types of energy: the kinetic energy of cardboard flying out, the sound energy that makes the neighbor's fourth place to scream, the flash light energy, etc.
The farther you are, you will notice the effects weaker as the energy is dissipated. But the stronger the explosion later we receive. Then consider a
huge explosion, huge, like the one that caused the Big Bang. So it seems logical to assume that the energy of the explosion would take much, but that long to dissipate.

And here begins the story:
Back in 1964, in New Jersey, Arno Penzias and Robert Wilson, two young physicists working for Bell Labs, were studying a new type of antenna that had been built. When connected the antenna began receiving a very weak signal that curiously seemed to come from all directions. No matter that point to any side or it was day or night, the sign was still there.
was more logical to think that was wrong something to the antenna for the sky was emitting signals in all directions, so I climbed onto the roof to check the antenna. There they found what they defined as "white dielectric substance" (a dielectric material is one that leads electricity poorly.) This language did not mean as far-fetched one thing: a dove had screwed in the antenna (with apologies).
So when they thought they had found the problem and fixed it, were so happy to turn your antenna, but again the mysterious noise was still there.
Reviewing some old theories, they saw that the characteristics of the radio signal they were receiving, coincided exactly the signal should have dissipated from the Big Bang.

The two young physicists received the Nobel, yes, 14 years later.

Anecdotally, we have that when astrophysicists were to examine the sign said they had found something like

"We're seeing the birth of the universe, or a pile of pigeon shit"

Left Upper Quadrant Pain In Morning

Science was inaugurated thoroughly. Welcome @ s.
This blog is intended to be a site of scientific, from a fun standpoint, curious and fun.

How does a plasma ball? What are the perpetual motion? What is skepticism? What were they really the greatest scientists? What is "smart" design? How was it discovered penicillin? What lies beyond our solar system? Is there any basis horoscopes?

are some of the many questions we will try to respond.

Finally, do not hesitate to suggest, criticize or propose any topic to talk about it as we humbly.

regards, and very soon!