Asteroid Diameter : 500 km
Speed: 20 km/sec (= 72000 km/hour)
This video shows what will happen if an asteroid with 500 km in diameter impacts on earth at 20 km/sec.
Wednesday, 18 December 2013
Discovery Channel - Miracle Planet - Large Asteroid Impact Simulation
Asteroid Earth Impact Simulation
Asteroid Diameter : 500 km
Speed: 20 km/sec (= 72000 km/hour)
This video shows what will happen if an asteroid with 500 km in diameter impacts on earth at 20 km/sec.
Asteroid Diameter : 500 km
Speed: 20 km/sec (= 72000 km/hour)
This video shows what will happen if an asteroid with 500 km in diameter impacts on earth at 20 km/sec.
Popular Electronics Blogger - EEVblog, Dave Jones
EEVblog is getting much more popularity in recent years. Dave Jones, the host of EEVBlog is an electronic engineer who had been working in industry before, but is now working as a full-time engineering blogger. His blog has a number of useful reviews and tutorials about electronics, and his unique Australian accent and hilarious hosting style make many electronic hobbyists love his blog.
This video shows a quick overview of Dave's style in eevblog.
His blog homepage: http://www.eevblog.com
His Youtube channel: http://www.youtube.com/user/EEVblog?feature=watch
This video shows a quick overview of Dave's style in eevblog.
His blog homepage: http://www.eevblog.com
His Youtube channel: http://www.youtube.com/user/EEVblog?feature=watch
The Signal Path dot com
The Signal Path dot com
http://thesignalpath.com
About (the below paragraph is taken from http://thesignalpath.com/blogs/about/)
Our goal is to help new students and hobbyists familiarize themselves with testing equipment, testing procedures and circuit design. Furthermore, we hope to introduce various test equipment to the market and help manufacturers advertise their new products. “The Signal Path” in a non-for-profit website.
Tuesday, 17 December 2013
D-Wave lecture by Geordie Rose (IdeaCity 2013)
D-Wave is a Burnaby-based company making Quantum computer chips. They managed to sell some of their products to Nasa, Google, and Lockheed Martin.
The Big Rip Theory HD
Everyone may have heard about Big Bang Theory. But what is Big Rip Theory?
If Big Bang is the birth of the universe, Big Rip is the end of the universe. This theory came out just a couple of years ago. It is interesting but also quite scary.
If Big Bang is the birth of the universe, Big Rip is the end of the universe. This theory came out just a couple of years ago. It is interesting but also quite scary.
Dr Quantum - Double Slit Experiment
Quantum theory can be very bizarre if one tries to understand with classic thought. Based on Quantum theory, particle can exist in many different places at the same time. Strictly speaking, the location of the particle is not fixed and is not yet determined until someone actually observes by the means of measurement tool or human eyes. In other words, until it is observed, the location of the particle exists as a possibility function varying across the space so called "Wave function". Therefore, if the wave function looks like sine wave, the possibility of the particle being observed at certain location varies smoothly up and down as you move to different location. However, at the moment of observation event occurred, the wave function collapses into delta function which has a peak at certain position which means the possibility of the particle being in that location is almost certain and the possibility of the particle being in other location is almost zero.
This same phenomenon can be observed in the Double Slit experiment video below. In the video, the pattern of the particles arrived on target becomes different when the particle is observed from when no observation is done. This is because the wave function which determines the probability of an particle being in certain location changes at the moment when the measurement is done. If no measurement is done to the particle, the wave function will not be touched, resulting in different result.
One very interesting topic to think about is what does it really mean by "observation". We know that if one person sees an object, that object is observed. However, if we use some machine to record event without a human looking at the recording video, is it considered to be observation, and it will change the wave function even before human actually watches the video? Or is it that, even in the video, the location of object just exist as many different possibilities until a human actually starts watching the recorded video. If the latter is true (which I think it is), it means our perception actually changes physical world by merely looking at it. At the moment when we perceived the location of the object, we actually changes the wave function of the universe.
Affecting the physical word by mere perception sounds very surprising, but if we come to think of it, we are actually doing the similar thing all the time. Our body can be changed depending on how we think. As a very simple example, when we get nervous, our body temperature goes up, and our heart starts beating quicker. Merely thinking differently actually affects the physical world.
It sounds to me that somehow quantum theory might be related to understanding how our perception work with our body. This is very interesting discussion topic. Please share your thought if you are also interested in this topic.
Enjoy the video.
Double Slit Experiment part of "What the bleep do we know"
Full movie of "What the bleep do we know"
This same phenomenon can be observed in the Double Slit experiment video below. In the video, the pattern of the particles arrived on target becomes different when the particle is observed from when no observation is done. This is because the wave function which determines the probability of an particle being in certain location changes at the moment when the measurement is done. If no measurement is done to the particle, the wave function will not be touched, resulting in different result.
One very interesting topic to think about is what does it really mean by "observation". We know that if one person sees an object, that object is observed. However, if we use some machine to record event without a human looking at the recording video, is it considered to be observation, and it will change the wave function even before human actually watches the video? Or is it that, even in the video, the location of object just exist as many different possibilities until a human actually starts watching the recorded video. If the latter is true (which I think it is), it means our perception actually changes physical world by merely looking at it. At the moment when we perceived the location of the object, we actually changes the wave function of the universe.
Affecting the physical word by mere perception sounds very surprising, but if we come to think of it, we are actually doing the similar thing all the time. Our body can be changed depending on how we think. As a very simple example, when we get nervous, our body temperature goes up, and our heart starts beating quicker. Merely thinking differently actually affects the physical world.
It sounds to me that somehow quantum theory might be related to understanding how our perception work with our body. This is very interesting discussion topic. Please share your thought if you are also interested in this topic.
Enjoy the video.
Double Slit Experiment part of "What the bleep do we know"
Full movie of "What the bleep do we know"
수퍼맨의 S 자는 SUPERMAN의 앞글자 이외에 또 다른 의미가 있다. (Hidden meaning of the letter S on Superman's chest.)
[Written in 2006]
요즘 나오는 Superman Returns 덕분에 우리의 수퍼맨이 다시 인기를 끌것 같습니다.
Thanks to the recently-released movie, Superman Returns, our hero Superman seems getting popularity again.
그런데, 수퍼맨의 가슴에 있는 S 자가 어디에서 나온 것인지 궁금한 사람들이 많이 있을 겁니다. 지식인에 한분이 SUPERMAN 의 앞자를 따서 생겨난 것이라고 설명이 되어있는 것을 보았는데, 당연 SUPERMAN 의 앞글자 를 따서 S 를 쓴 이유도 있지만, 이 S 자에는 수퍼맨 원작을 쓴 작가의 또 다른 의미도 담겨 있습니다. 그 의미를 알기 위해 잠시 옛날로 돌아가 보겠습니다.
People might be curious about where the letter S on the chest of superman originally came from. I saw that on the Naver Ji-sik-in website, someone explained that the letter S should come from the first letter of superman. Of course that is one of reasons, but there is actually another hidden reason for it. In order to know it, we need to go back to the time when the author started writing the Superman story.
1914년에 캐나다 토론토에서 태어난 Joe Shuster 는 학찰시절 Jerry Siegel 이라는 친구를 만나게 됩니다. 이 둘은 공상과학 글 쓰는 것을 어릴적부터 무척이나 좋아했습니다. 그 둘은 어느시점부턴가 협력하여 Science Fiction 이라는 공상 과학 잡지를 만들어서 주변 친구들에게 팔기 시작했습니다.
Back in 1914, Joe Shuster who was born in Toronto, Canada, met his friend Jerry Siegel in school. They both loved writing scientific fiction stories since they were young. One day they decided to make a magazine called "Science Fiction", and started selling it to people.
그들은 1933년 이 Science Fiction 이라는 잡지에 Superman 을 처음 등장시켰는데 이 때의 Superman 은 우리가 지금 생각하는 영웅이 아닌 엄청난 파워를 가진 악당으로 등장합니다. 그런데 문제는 여기서 생깁니다. 수퍼맨이라는 새로운 악당의 등장으로 인해서, 그들이 이미 쓰고 있던 연재 만화 Dr. Fu Manchu 에서 등장하는 캐릭터 악당과 맞닥드려 양쪽 중 한쪽의 인기가 식을 수도 있는 상황이 되었던 것입니다. 그래서 결국 그들은 Superman 을 영웅으로 바꾸기로 결심한 겁니다. 그것이야 말로 그들의 만화가 좀더 오래 갈 수 있는 길이라고 생각했던 것이죠.
In 1933, they created a character called Superman in one of stories in their magazine, but at that time, the superman appeared as a villain who has a tremendous strength, not the hero as we see today. But they soon realized that the popularity of Dr. Fu Manchu who was also villain character in another story in the same magazine could be cooled down because of the creation of the superman. Thus, they changed their mind and decided to present Superman as a hero in order to keep their business going well.
하지만 이 때의 영웅 Superman 은 사람들에게 별로 인기가 없었습니다. 그래서 그들은 날밤을 새며 고심한 끝에 결국 Superman 을 두개의 인격을 가진 인물로 만들기로 결심합니다. 이 때가 바로 1934년. 그들은 Superman 의 평상시 인물의 이름을 영화배우 Clark Gable 에서 딴 Clark 과 Kent Taylor 에서 딴 Kent 를 합쳐 Clark Kent 로 만듭니다.
However, Superman at that time wasn't very popular. After much consideration, they decided to make Superman have two different lives, one as a hero and another as a regular person. This time was 1934, and they named him Clark Kent; his first name Clark after the movie actor Clark Gable and his last name Kent after Kent Taylor.
그리고 이들은 Superman 의 가슴에 S 자를 놓기로 하는데, 이것은 수퍼맨의 앞자 S 를 의미하기도 하지만, 이 Superman 을 탄생시킨 그들 자신의 이름인 Shuster 와 Siegel 의 앞자를 의미하기도 했습니다. 이것이 바로 수퍼맨의 S 자가 가진 또 다른 비밀입니다.
Then they also decided to put the letter S on Superman's chest, and this S stands for not only the first character of Superman but also the first letter of their name, Shuster and Siegel. This is another secret hidden in the letter S on Superman's chest.
그리고 한가지 더 말하자면, Superman 에서 나오는 여자 주인공 Lois Lane 는 그 당시 실존 인물을 모델로 해서 만들어졌으며, 그 인물이 나중에 Siegel 의 부인이 됩니다.
In addition, the female character, Lois Lane, in Superman, was made based on an actual person at that time, and she later became Siegel's wife.
재미있는 스토리죠? ^^
Isn't this interesting? ^^
참고로, 이 정보는 제가 CANADIAN INVENTIONS 라는 영어책을 읽고 얻은 것 입니다.
For the reference, I got this information from the book, Canadian Invention.
요즘 나오는 Superman Returns 덕분에 우리의 수퍼맨이 다시 인기를 끌것 같습니다.
Thanks to the recently-released movie, Superman Returns, our hero Superman seems getting popularity again.
그런데, 수퍼맨의 가슴에 있는 S 자가 어디에서 나온 것인지 궁금한 사람들이 많이 있을 겁니다. 지식인에 한분이 SUPERMAN 의 앞자를 따서 생겨난 것이라고 설명이 되어있는 것을 보았는데, 당연 SUPERMAN 의 앞글자 를 따서 S 를 쓴 이유도 있지만, 이 S 자에는 수퍼맨 원작을 쓴 작가의 또 다른 의미도 담겨 있습니다. 그 의미를 알기 위해 잠시 옛날로 돌아가 보겠습니다.
People might be curious about where the letter S on the chest of superman originally came from. I saw that on the Naver Ji-sik-in website, someone explained that the letter S should come from the first letter of superman. Of course that is one of reasons, but there is actually another hidden reason for it. In order to know it, we need to go back to the time when the author started writing the Superman story.
1914년에 캐나다 토론토에서 태어난 Joe Shuster 는 학찰시절 Jerry Siegel 이라는 친구를 만나게 됩니다. 이 둘은 공상과학 글 쓰는 것을 어릴적부터 무척이나 좋아했습니다. 그 둘은 어느시점부턴가 협력하여 Science Fiction 이라는 공상 과학 잡지를 만들어서 주변 친구들에게 팔기 시작했습니다.
Back in 1914, Joe Shuster who was born in Toronto, Canada, met his friend Jerry Siegel in school. They both loved writing scientific fiction stories since they were young. One day they decided to make a magazine called "Science Fiction", and started selling it to people.
그들은 1933년 이 Science Fiction 이라는 잡지에 Superman 을 처음 등장시켰는데 이 때의 Superman 은 우리가 지금 생각하는 영웅이 아닌 엄청난 파워를 가진 악당으로 등장합니다. 그런데 문제는 여기서 생깁니다. 수퍼맨이라는 새로운 악당의 등장으로 인해서, 그들이 이미 쓰고 있던 연재 만화 Dr. Fu Manchu 에서 등장하는 캐릭터 악당과 맞닥드려 양쪽 중 한쪽의 인기가 식을 수도 있는 상황이 되었던 것입니다. 그래서 결국 그들은 Superman 을 영웅으로 바꾸기로 결심한 겁니다. 그것이야 말로 그들의 만화가 좀더 오래 갈 수 있는 길이라고 생각했던 것이죠.
In 1933, they created a character called Superman in one of stories in their magazine, but at that time, the superman appeared as a villain who has a tremendous strength, not the hero as we see today. But they soon realized that the popularity of Dr. Fu Manchu who was also villain character in another story in the same magazine could be cooled down because of the creation of the superman. Thus, they changed their mind and decided to present Superman as a hero in order to keep their business going well.
하지만 이 때의 영웅 Superman 은 사람들에게 별로 인기가 없었습니다. 그래서 그들은 날밤을 새며 고심한 끝에 결국 Superman 을 두개의 인격을 가진 인물로 만들기로 결심합니다. 이 때가 바로 1934년. 그들은 Superman 의 평상시 인물의 이름을 영화배우 Clark Gable 에서 딴 Clark 과 Kent Taylor 에서 딴 Kent 를 합쳐 Clark Kent 로 만듭니다.
However, Superman at that time wasn't very popular. After much consideration, they decided to make Superman have two different lives, one as a hero and another as a regular person. This time was 1934, and they named him Clark Kent; his first name Clark after the movie actor Clark Gable and his last name Kent after Kent Taylor.
그리고 이들은 Superman 의 가슴에 S 자를 놓기로 하는데, 이것은 수퍼맨의 앞자 S 를 의미하기도 하지만, 이 Superman 을 탄생시킨 그들 자신의 이름인 Shuster 와 Siegel 의 앞자를 의미하기도 했습니다. 이것이 바로 수퍼맨의 S 자가 가진 또 다른 비밀입니다.
Then they also decided to put the letter S on Superman's chest, and this S stands for not only the first character of Superman but also the first letter of their name, Shuster and Siegel. This is another secret hidden in the letter S on Superman's chest.
그리고 한가지 더 말하자면, Superman 에서 나오는 여자 주인공 Lois Lane 는 그 당시 실존 인물을 모델로 해서 만들어졌으며, 그 인물이 나중에 Siegel 의 부인이 됩니다.
In addition, the female character, Lois Lane, in Superman, was made based on an actual person at that time, and she later became Siegel's wife.
재미있는 스토리죠? ^^
Isn't this interesting? ^^
참고로, 이 정보는 제가 CANADIAN INVENTIONS 라는 영어책을 읽고 얻은 것 입니다.
For the reference, I got this information from the book, Canadian Invention.
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