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Mostrar mensagens com a etiqueta cosmology. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta cosmology. Mostrar todas as mensagens

06/02/16

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Is space colonization our moral obligation?

Is space colonization our moral obligation? - Video


This channel has the participation of many distinguished people in all branches of science.

This video responds to the question is the space colonization our moral obligation?

The truth is that our planet has limited resources and their balance is incredibly difficult to maintain. Although it is necessary to make a great effort to guarantee that our planet will have all the necessary resources for generations to come, sources of non-renewable energies are limited and their spare time is not greater than their time consumption.
Nevertheless, the human population grows exponentially and with increasing life expectancy will become unbearable guarantee supplies to the entire population, at least the way we are prepared.


Leaving aside global warming, species extinction or world peace, and provided that all these factors are controlled, we will face inevitable problems!
The truth is that of all the species on the planet are the only one with the idea that extinction is an imminent risk.

The solar system will have its end and therefore space missions within the solar system are essential if we believe that Humanity has going to exist for a very long period of time


Not wanting to give up our home, space exploration does not compromise any hope of life on Earth. And so it would be our responsibility transpose what Nature "built" for millions of years in such a unique way in the universe for eternity.

Since ever human being dream beyond their limits. Getting to know what is beyond the horizon is part of our nature. So I don't see how that space exploration can be seen as something unnecessary, luxurious or whimsical.
Why ignore what makes us different? The incessant desire to explore and find answers to our indeterminable questions!!!

A topic to think about!!! ;)

22/12/15

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Matter vs. Anti-matter

The Science Asylum - What makes anti matter so special?!

Hello!!!

The theme escapes to the trend of what has been published. Physics! Year by year, more and more discoveries are made. Is it a new particle, a distant galaxy or a unexplained principle.
The theme "matter - antimatter" is relatively recent in view of the time we know the least well our Universe (notice I said "our Universe"). Curious will think, will already know minimally well ??? And leaving the part of phylosophysics and returning only to physical here we go !!!

First of all it should be noted that the antimatter term is just a convention. It's setting on the line of the real numbers to the positive is from right to left and the negative from left to right, or to define the north pole is at the top of the globe and the South Pole is down (by the way, the top and bottom part is a term that really can not be applied because the Universe has no reference or center).

There is nothing that gives the antimatter unique characteristics that no matter the "normal". The only peculiarity is that the load is exactly opposite !. Moreover, has the same mass, size, emit the same radiation and energy, as is everything!
While an atom of matter consists of a neutron, proton and electron a antimatter atom is constituted by an anti-proton, anti-neutron and a positron (as opposed to electron).


Matter is an energy state, and as such, when the Big Bang occured, it released all the energy that was contained, and it should have been createded equal amounts of matter and antimatter.
The only problem is that because they have exactly opposite charges when they touch contact teach other, they annihilate and release energy !!! Rather the spectrum of gamma rays:


As such, with equal amounts, the matter should not exist, and quoting Descartes, "I think, therefore I am", and after all, here we are and that's why we have a problem!
A good explanation for this battle that has been won by matter rather than the anti-matter might be behind the fact that there may be more matter than antimatter in the universe. Some say that for every 1 million anti-matter particles, there were 1 million and one particle of matter. But still, this goes against the principles of physics!
                            

However, keep hopes !!! These two differ in one very important aspect !!! Radioactive decay !!! It has been tried and indeed antimatter has a considerably faster decay! Yet it is not enough to answer our questions ...


On the other hand, the author of video as well as other physicists argue that there is still an equal amount of matter and antimatter in the universe. And that perhaps some of the galaxies we observe are composed entirely of antimatter. Interesting idea!
However, if that happened, it would be expect that at least at the border of the galaxy / cluster / supercluster, the two types of matter meet and annihilate each other! What does not occur because there is no data of dubious emissions or sources of gamma radiation in space!

Finally, another issue that arises is whether the anti-matter has an opposite gravitational force than usual, which is would be to observe the attraction between two bodies.
In my opinion, not acknowledging any negative mass elements (or contrary to our, as they prefer to say), I do not see this happening.
On the other hand, if exists galaxies of antimatter, how do they exist if each body would repel other bodies?
If so, how does an antimatter atom would have the same properties as conventional matter? I know the strong nuclear forces are prevalent, however it would still interfere with the atomic radius, bonding radius, electron removal of energy, etc ... But do not let being a layman in physics, I am always ready to learn and if there are opinions that contradict my argument, I will be happy to hear them!





And you??? What do you think???









https://curiosity.com/paths/what-makes-antimatter-so-special-animations-by-sejl-the-science-asylum/?ref=sp#what-makes-antimatter-so-special-animations-by-sejl-the-science-asylum

http://www.scientificamerican.com/article/how-do-we-know-that-dista/

http://hubpages.com/education/What-is-the-difference-between-matter-and-anti-matter

http://hubpages.com/education/Why-Is-There-More-Matter-Than-Antimatter#

08/11/15

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Welcome


Hi!!!
Today I begin to write in my blog ! It is an interesting and demanding challenge that I intend to keep the appointment! 
Leptonics... Lepton belongs to the elementary particles of the universe.
Divided into different categories , we find the Lepton within the category of Fermions. Fermions are the " building blocks " for the creation of matter . In this category we find the Leptons and Bosons.





In this blog I intend to inform, disseminate , comment and arouse curiosity and critical thinking to all visitors .


In the various subjects of biology, chemistry, physics, health, psychology, technology, cosmology, astronomy, and others, I hope you can find here relief issues and gain new interests!


I hope that the diversity of themes will be a reason to suggest new interests to anyone . The beauty with which the issues are interrelated is brutal! Since the origin of the universe , its principles and its laws, the way we define the behavior of all particles and all the forces that interact with them, and how that confers the characteristics to what surrounds us!!! From our little point of view we can discuss all the issues, but we will always have limitations, which makes the pursuit of knowledge a challenge even more exciting! When and how we will break our own barriers, and when will you find a question that won't ever be answered? And why won't it be answered?








The truth is that throughout the history of mankind , many issues have already been debated and often against common sense , science won!

Since the transition from Geocentric model to the heliocentric (which is not the current but revealed a drastic change ) , the discovery of the cell as building blocks of life, from the theory of miasma to the germ theory, since the discovery of Newtonian physics for a completely revolutionary definition of Albert Einstein's space-time, to the discovery of as "counter intuitive" quantum physics to which Einstein criticized strongly ... well , we will never know what the next step .






Thank you so much, and see you on the next time!!!


https://en.wikipedia.org/wiki/Miasma_theory

https://www.quora.com/What-can-be-the-best-introduction-of-all-16-fundamental-particles-for-a-beginner

http://physics.info/standard/practice.shtml

http://hyperphysics.phy-astr.gsu.edu/hbase/particles/lepton.html