Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Sunday, November 6, 2011

Brave New World Episode 2 - Medicine


In the 2nd episode of Brave New World  scientists tell a story of the constant battle with killer diseases, the newest advances in medical science and how they change our lives. For more Channel 4 documentaries check out their youtube channel below.



4oDDocumentaries

Wednesday, September 21, 2011

Why Doesn't The North Star Move in the Sky?


Have you ever wondered why the so called North Star (sometimes called Pole Star) doesn't move in the sky? Well actually this is one of the most often asked questions in astronomy.

The answer actually is very simple. The so called North Star does not move as it is above the North Pole and the axis of Earth's rotation. Thus the rotation of our planet causes the movement of the stars in the sky except for the North Star.

The interesting thing is that stars also move a little, also the axis of rotation of planet Earth also shifts slowly. Thus the role of the "North Star" changes among stars throughout time.

The picture shows star movement in the sky:



















Source

Tuesday, August 2, 2011

"Curiosity" - a Brand New Science Show on Discovery


Guess what - there's another great science documentary coming soon. A brand new show tackling the mysteries of the universe is going on air this Sunday ( August 7th) on 8 pm.

Discovery announced that it's going to be a multicast show translated to 44 different languages. In addition, it will be broadcasted on Animal Planet, Science Channel and TLC.

Producer of the show during the press conference said that the show will be focusing on three main areas - ourselves, our world and our place in the universe. The first episode is going to be called "Did God Create the Universe?" So be sure to check this show out because it sounds promising.



Thanks for reading! Please follow and comment. Cheers

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Saturday, July 23, 2011

God vs Science


Have you ever wondered where did the universe come form? It seems that for thousands of years only religion could try to tackle this question. As every religion was based on a belief of a god or group of gods who created everything including the universe and Earth. However, these days, the situation has changed radically.

These days science is closer than ever to answering many important questions about the universe. We even have a solid theory of the big bang, which explains the beginning of the universe (though it can't explain the cause of it).   The development of science has brought us many important answers about the universe and if his keeps up, we might find even more fascinating answers to the biggest questions about the universe in the near future.

Of course there are people who believe that science cannot answer anything related to the creation and the purpose of the universe. This is natural, as religion often conflicts with science. But is there no place for god in science? Or is belief in god compatible with science? This Horizon documentary tackles these questions. Enjoy!


Thanks for TreVelocita for uploading the full video.

Thanks for checking this out. If you like my stuff please subscribe and comment. Cheers

Friday, July 22, 2011

Science: Lost Between Yin and Yang


If you're reading this, than you must be sitting in your favourite chair or perhaps using your laptop while lying on your favourite couch. Also, you must be having your fancy smartphone by your side and perhaps one of those cool LCD TV's. Let's be honest, all this sophisticated technology makes our lives great and comfortable. For the first time in history, we can communicate to the other side of the globe with ease, fly to other continents and even fly to the outer space. For all of this we have to be thankful to science. But does science have a darker side?

Source

Lately I've been reading these articles about how evil science can be. It really got me thinking. And it's really true that science can be used to create terrible things. Actually, the stereotype of a mad evil scientist has been around for years. Ever since Dr. Jekyll turned into Hyde and the terrible Frankenstein monster was created, science has had a darker side in the media.

Of course science has been used for terrible things in reality too. After all, science can be used to create terrible weapons of mass destruction, which can kill thousands and even millions. Even today many scientists refuse to work on nuclear weapons, as they believe it is morally wrong.

So does science bring more evil or more good to our world? I think science is only a tool, which can be used for both and evil. I mean nuclear physics, which has brought terrible weapons of mass destruction,but it has also brought us nuclear power plants. Countless of such examples can be found, as science can truly be used for good and bad.

So what do you think about this? Does science bring more good or evil to the world?


Tuesday, March 29, 2011

An Amazing Lecture By Sir Roger Penrose


Recently I had an amazing opportunity to attend a lecture by the Sir Roger Penrose himself. Roger Penrose is a great mathematician and mathematical physicist working in a variety of fields of physics and mathematics. He is also a very famous author of books such as The Road to Reality, and The Cycles of Time.

His lecture was about trying to answer the question "Can We See Through The Big Bang to Another Universe?". In other words, the lecture was about one of the theories of Roger Penrose, regarding the history and the fate of the universe, the so called cyclic model of aeons.

In conclusion, it was a great lecture. I have to be honest I didn't understand some of the parts, however some really unique and fascinating ideas were presented, which I really liked. And it is needless to say that the feeling of attending a lecture with the top notch physicists and mathematicians was really amazing.

But these aren't the only good news. I happen to found another recording on Sir Roger Penrose lecture about the same topic. I listen through it and it's the same lecture. So here it is and I hope you enjoy it.


Thanks for reading!

Monday, January 17, 2011

How to Survive a Nuclear Attack?


My last post about nuclear bombs and explosions led me to do more research about nuclear explosions and attacks. After all, it's a very fascinating subject, especially these days, when a nuclear war looks more like a fantasy than a reality. But what if...?



What if a nuclear war actually took place these days? Would we be ready? While looking for an answer to this question I found a great lecture by Irwin Redlener, which I would like to share. Enjoy:


Links: 1) New Age Legends Blog
2) Start Earning Online Blog

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Friday, January 14, 2011

Mind Blowing Facts About Nuclear Bombs + Chernobyl Disaster


While surfing around the web I found many interesting stories and urban myths about science. One of them is about a blind girl who sees a flash on an atom bomb.

A Blind Girl Sees a Flash of an Atomic Bomb

The first story is about an atomic bomb. As the story goes, during a testing of an atomic bomb in 1945 a blind Mexican girl saw the explosion. The interesting part about this story is that it's true. Now, it's quite clear that there are many ways to feel an atomic explosion without actually seeing it in some way. Thus it's not clear how the girl felt the explosion. Still it's an amazing story.



Now I like this story, because it's about atom bombs. I mean there are many subjects, which both scare and fascinate people these days. Ghosts, evil spirits, ufos and other paranormal phenomena - all of these subjects are always popular in the modern myths and legends. However, there is another group of subjects, which are even more fascinating. It's the real stuff. And by that I mean serial killers, unexplained scientific phenomena, terrorist attacks, nuclear explosions and so on. All of these things are even scarier, because they might just happen to you...

Atom bombs fascinated people ever since the first tests and explosions at Hiroshima and Nagasaki in 1945. After all, what can be more fascinating and horrifying at the same time than the most deadliest weapon, which can kill thousands in a matter of seconds. Thus I dug up some interesting facts about nuclear bombs and explosions. Enjoy!



1. There are still some 26,000 nuclear warheads in the world, enough to destroy civilization many times

over and destroy most life on earth. Nuclear weapons make humans an endangered species.

2. More than 95% of all nuclear weapons are in the arsenals of the US and Russia.

3. The average nuclear weapon in the US arsenal is approximately eight times more powerful than the
nuclear bomb that destroyed Hiroshima, immediately killing some 90,000 people.

4. There are currently nine countries with nuclear weapons (US, Russia, UK, France, China, Israel, India,

Pakistan and North Korea).

5) In the aftermath of the Cold War, a variety of

new nuclear threats have emerged. Among these are the following dangers:

• Increased chances of nuclear weapons falling into the hands of terrorists willing to use them;

• Policies of the US government to make nuclear weapons smaller and more usable;

• Use of nuclear weapons by accident, particularly because of decaying Russian infrastructure; and

• Spread of nuclear weapons to other states that may perceive them to be an “equalizer” against a more
powerful state.

6) The cost of US nuclear weapons research,

development, testing, deployment and maintenance has exceeded $7.5 trillion.

7) Cost of the Manhattan Project (through August 1945): $20,000,000,000


8) In ten minutes, a hurricane releases more energy than all the world's nuclear weapons combined!


9) Belarus received 70% of the contamination from Chernobyl.

Neighboring regions are often hit hardest in the event of a nuclear disaster, and that’s been especially true in the case of Belarus. Located just 10 miles away from the Chernobyl Nuclear Power Plant, scientists estimate that this landlocked country was hit by 70% of the radioactive outburst.

10) Nuclear rain from the Chernobyl disaster fell as far away as Ireland.

11) Chernobyl disaster remains the only Level 7 incident on the International Nuclear Event Scale. That is, it's the biggest man-made disaster in human history.


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Tuesday, January 11, 2011

Real Ghost Hunters and So Much More...



When it comes to paranormal phenomena, most of the scientists are sceptical right from the start, that is why I was amazed to find out that there is such a thing as a Society for Psychical Research.


Society for Psychical Research is a non-profit UK based organization seeking to understand and explain paranormal phenomena in a scientific manner. The SPR was founded in 1882 in London by a group of eminent thinkers including Edmund Gurney, Frederic William Henry Myers, William Fletcher Barrett, Henry Sidgwick, and Edmund Dawson Rogers. Initially six committees were established in order to research Thought-Transference, Mesmerism and similar phenomena, Mediumship, Reichenbach Phenomena (Odic Force), Apparitions and Haunted Houses, physical phenomena associated with séances, and the Literary Committee which studied the history of these phenomena.




 Today the society is run by a president and a council of twenty members. The organization is based at 49 Marloes Road, Kensington, London, with a library and office open to members. Also the society publishes quarterly Journal of the Society for Psychical Research (JSPR), the irregular Proceedings and the magazine Paranormal Review.

The greatest thing about this organization is that it is open for public. By paying for the membership you get access to the libraries, subscription to the Journal of The Society and invitations to the meetings of the society.

I also happen to find a Journal of the society, which was really interesting to read. Here's the link:

Journal of the Society for Psychical Research

Website of the Society for Psychical Research

Thanks for reading!

Thursday, January 6, 2011

Noetic Theory?


Dan Brown's book "The Lost Symbol" is famous not only for of mason related refrences, but also for a variety of scientific references. Among various references to ancient texts, which contain scientific knowledge similar to our current understanding of science, there's a very interesting theory called noetic theory. So what is noetic theory?



"Noetic theory or noetics (from Greek νοητικός "mental" from νοεῖν "to think" from νοῦς – noûs) is an alternative metaphysical philosophy concerned with the study of mind and intuition, and its relationship with the divine intellect."

In simple words, the main idea of noetic is that human mind can affect the material world. Furthermore, human soul is real and is Bose or photon based.Also noetic studies the so called extrasensory abilities (out of the body experiences, seeing the future and so on).

This theory is a very interesting one for a great variety of reasons. First of all, while the mainstream science crosses out  telekinesis and other such phenomena as fiction, due to the lack of proof, noetics try to actually investigate human mind powers. Secondly, it has a real institute of noetic science, which clearly shows, that there are scientists who take this subject very seriously and people, who invest their money to support this science.

If you would visit the website of the "Institute of Noetic Science" you would notice that they have a special article about noetic in the "Lost Symbol". It's a very interesting article, which states that noetic experiments mentioned in the novel are actually every day life for noetic scientists.



So is noetic a real science, or is it only pseudoscience, which got famous overnight, when a famous novel popularised it? The only way to find the answer to this question is by analizing the journals, which are available at the website. According to the institute, all that was mentioned in the famous novel has a variety of real research to back it up. All in all only one thing is clear, now, when the noetic science is out of the dark, maybe more people and scientists will become interested in it.

Links:

1) IONS - Institute of Noetic Sciences

2) The Science Behind "Lost Symbol"

3) IONS Library

Thanks for reading!

P.S. be sure to check out this great book:



Monday, September 27, 2010

Top 10 Mysteries of Cosmology


Cosmology is one of the most important branches of physics, however it also has many unanswered questions and mysteries. This article lists the top 10 mysteries of cosmology.



10) When were the first stars formed. What were they like and how they looked? Today we know quite a lot about the history of the universe. According to the big bang theory, the universe started about 13.7 billion years ago. About 3 seconds after the Big Bang, nucleosynthesis set in with protons and neutrons beginning to form the nuclei of simple elements, however it took about 100 000 years for the atoms to form the ordinary matter, which can be found in our universe these days. Later, due to gravitation, various stars formed. We know a lot about star evolution today, however it’s still not clear when were the first stars formed. Hopefully new telescopes will be invented and we will find out even more.

Source


9) Why are the galaxies distributed in clumps and filaments? Sounds very simple, but we still don’t know the answer to this question.

Source


8 ) Why is there an almost empty area of space next to the centre of our galaxy?Scientists believe that in the centre of the Milky Way Galaxy there is a massive black hole. All the stars in our galaxy seem to be orbiting this super massive black hole. However, there also seems to be an empty area of space close to the centre of our galaxy, which according to current scientific knowledge is very strange. According to theory, the black hole at the centre of the universe should eventually attract many stars closer to the centre of milky way. However, observations show that it is not the case. Hopefully new telescopes will shed some light on the problem.


7) Do Black Holes really exist? Everybody knows what a Black Hole is, however, scientists have never observed one directly. It is possible to guess that every galaxy has a Black Hole in the centre of it by various gravitational effects, however it is much more harder to detect a Black Hole directly, because it doesn’t radiate light. Let’s hope in the near future scientists will observe the so called Hawking’s radiation (according to Hawking Black Holes do radiate energy, although very slowly) and he will win his Nobel price.

Source


6) Is it possible to create a quantum gravity theory. The two great theories of the 20th century do a great job when it comes to describing the world of the big (universe, galaxies and so on) and the world of the small (subatomic particles). I am of course talking about the general theory of relativity and the quantum mechanics. According to astrophysicists the first moment of the universe – the big bang started from a singularity. To find out how exactly the universe started it is necessary to join these to big theories, because at the star of the universe all the matter was formed in a microscopic singularity, which had extraordinary strong gravitational properties.




5) How exactly gravity works? Many of the great minds throughout the history tried to answer this question. Newton formulated the law of gravitation, which easily enables to calculate the movement of heavinly bodies to a great degree of accuracy. However, Newton had no idea how that magnificentinvisible force worked. Einstein came up with the famous general theory of relativity, which explained that gravity was the result of the deformation of time and space. Still, there are many questions, like is the space time physically detectable, are gravitons real, do gravitational waves really exist and so on. Many modern experiments are being carried out, which aim to solve some of these problems, however it may take many more years or even another great mind like Newton and Einstein to totally conquer the mystery of gravity.

Source



4) Why is there an arrow of time? Is it possible to turn it around? Most of the laws of physics work great independent of the direction of time, time seems to be running from the past to the future. But why exactly does time only go to one direction? Why is the future different from the past? Also, is it possible to travel back in time?



3) What is Dark Matter? By observing the movement of the galaxies and planets it is possible to find out how much mass is in the various galaxies. Interestingly, the observation show that there’s actually less visible matter in observed galaxies than the theory suggest. This invisible matter is called the Dark Matter.




2) What is Dark Energy? Almost everyone knows that the universe is expanding, even more interesting is that the universe is not only expanding, but also it’s expansion is accelerating. Thus scientists believe that there is some kind of an invisible energy, which is spread throughout all the universe. This energy, which is called Dark Energy, is the cause of the acceleration of the expansion of the universe. However, no one has an idea what exactly it is.

Source



1) What happened before the big bang? Some believe that it was god, who caused the beginning of the universe, others believe in quantum fluctuations, others think our universe was a part of another universe in a multiverse and so on… To be honest, nobody knows what exactly happened before the big bang. It is the ultimate secret of both cosmology and physics. Will we ever find out the answer to this question? Only time will tell.

Monday, August 30, 2010

The Mysterious Dark Energy


Dark Matter


Sunday, August 8, 2010

How to Prevent Wars?


Today I asked myself an interesting question - why are there wars? As you might think I thought of hundreds of reasons why there are wars in our society. Different political systems, different religions, lack of resources... the list can go on. However, I think a more important question is how to prevent wars.

There is a saying that until there will be people in our planet, there will be wars. I actually believe this, but I think it is possible to prevent global world wars in the future. You see people have something deep in their minds and nature, which makes them fight. The fact that every person is different means that there are many various belief systems, religions and political systems, which can be a direct or an indirect cause of many conflicts and wars. Fortunately by educating our society, making it more tolerant and simply smarter, we can take the first steps in the long journey to world peace.



Let's just think about this for a moment. If we understood people of the middle east better, maybe we would think about them differently. Maybe, if we knew more about their religion, culture and political situation, we wouldn't be in war with them. Maybe if they knew more about the western world, democracy and capitalism, they wouldn't think of us as an enemies. Fortunately, by educating our society we can spread tolerance all across the world. By teaching people about different cultures and religions, we can make our world into a brighter place. After all, education is our road to a brighter world.




"But what about science?"- you might ask, after all this is a science blog. Science, like education, is also an answer to many problems of our modern society. I'm sure that if you read newspapers, you have noticed that our society has many problems with resources, global warming, air, water and overall nature pollution. Resources, or more precisely the lack of resources, can be one the major cause of the future wars. Fortunately, even at this moment, thousands of scientists are working on these problems.

Science as well as education is one of the greatest answers to many problems of our world. Only by educating our society, we can develop it and make it a more peaceful place. Only by education people all around the world can become more tolerant and find out more about foreign cultures and religions. So as Vladimir Lenin once said:"Learn, learn and once again learn!".




Thanks for reading. It would be nice to hear your opinion about this subject:)

Sunday, July 18, 2010

So You Want to Learn Physics (The Fun Way)


These days when internet is easily accessible, it's easy to learn anything you like from home. Internet, being the biggest virtual library, gives you an opportunity to learn various science fields as well. Today I will show you some nice books that you can easily find on the internet. These books helped me to learn various subjects an get better at high school.

If you want to learn physics you should start from simple high school level physics, however there are some very nice books, which can teach you the basics of quantum mechanics, string theory, general and special theories of relativity and other.

There's a very nice book about time travel, which covers many aspects of general relativity, special relativity, quantum mechanics and some history of physics. This book is called Black Holes Wormholes and Time Machines by Jim Al-Khalili. It's a simple to read book that contains basically no maths, so it can be read by anyone.





Another great book for those, who want to learn the basics of modern physics is Elegant Universe by Brian Greene. This book also covers the basics of Einstein's theories, quantum mechanics and some history of physics. The main focus of the book is string theory.




After reading these books, you could find Stephen Hawking's books useful. The most popular of his books are The Brief History of Time and The Universe in a Nutshell.  Both of the books cover a wide range of physics subjects, are easy to read and contain some valuable knowledge.





The series of books called For Dummies contain a lot of useful books, basically about anything. You can find many useful books like The String Theory for Dummies, Physics for Dummies and so on.  I highly recommend these books for starters, because they're easy to use and contain all that a starter needs.






Well that's it for now. Thanks for reading. I hope these books, will be useful for you. Please subscribe or follow my blog if you like it.

Sunday, June 20, 2010

Internet - a Powerful Learning Tool


Internet has become a very powerful learning tool. This is an article about various ways of using the internet for learning.

Internet Encyclopedias

If you need to learn something you will need some valuable specific information and internet encyclopedias can help you. Online encyclopedias like Wikipedia, Encyclopedia, Britannica and others are great sources of information. Internet encyclopedias have many advantages compared to classical paper encyclopedias, for instance you can find information much faster. So, all in all, be sure to use online encyclopedias during the learning process.

Ebooks

Internet is like monumental digital library where you can find nearly everything these days. Starting with newspapers ending with philosophical books - everything's online. So in order to learn something you will surely need some books. In order to learn something, for instance particle physics, just look for some online ebooks about the basics of particle physics. The advantage of internet is that most of the times you can find free ebooks so you can save time and money.

Video

In order to learn something well you have to learn it in many different ways. What I want to say is that you have to use all of your senses. By watching various online videos about the subject you're trying to learn, you will not only read the information, but also you will watch and hear it. By using a variety of senses you will enrich your learning process and it'll be easier to remember the learning material.

Audio Ebooks

If you want to enrich your learning experience even more you can download audio books. It's especially useful when you don't have enough time to actually read books.

Power of Forums

Another way of enriching the learning experience is joining a forum of a relevant subject. That way you'll meet new interesting people and will have a chance to discuss your learning material with them.

Saturday, May 8, 2010

Science or Science Fiction?


What is science? A rather philosophical question I have to say. Well if you're a student then chances are science will associate with tons of homework. And if you are a simple statistical person, than science is actually nothing more than some magical thing which is the cause of your Ipod or computer. If you're a geek like me, than science is like magic to you, after all what can be more magical than flying to the Moon or having all the knowledge of thousands of libraries just one click away from you on the internet. These all definitions are all great, but what is science more precisely? Maybe we should check the vocabulary?

"The word science comes from the Latin "scientia," meaning knowledge." More precisely, science is knowledge attained through study or practice. That's all fine but you must be wondering why I'm talking about all of these definitions. Well the answer is simple, because we life in a time when it's not clear what is the difference between science and science fiction. 


A few days ago I watched a very nice movie back from the 50s, you know the golden age of horror movies about monsters, aliens and space travel. The special effects looked kind of silly after all of these years, but the movie was still kind of interesting and funny in same way. However, after watching the movie, where some crazy astronauts flew to Mars, I asked myself a very simple but a truly interesting question - is this movie a Sci-fi movie? The reason for this question is of course the famous president Obama announcement during which he revealed the new plans to travel to Mars in a course of 20 - 30 years. So if we are going to Mars, then the crazy Sci-fi movie that I've seen, is not so unrealistic. As a matter of fact if we were to look at various Sci-fi works from the early 1900s and even earlier, we would realise, that almost everything that was science fiction now is real science.For instance, some months the world was shaken when some crazy scientists discovered that some materials can bend light rays in some ways to make the material invisible. Wouldn't you like to have an invisible coat, huh?


Every time, every decade, every era is famous for something, for instance the 60s are famous for rock music and hippies, the 20th century is famous for wars and scientific inventions and so on. So what is our century famous for? I truly believe that our century is the golden age of science.
The fact that science fiction is no longer just fairy tails, means that we are truly living in a very unique time. We can travel to space, use mobile phones, the internet, travel between continents in a matter of hours and live long healthy lives. What  science fiction was in the past is now science. And the fact that we are living in the world where it is no longer clear what is science fiction and what is science, truly means that we are living in a magical world indeed.

Thursday, May 6, 2010

But What Exactly is Lhc?


Starship - is It Really Possible?


So When are We Going to Mars?


 
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