Saturday, November 22, 2008
2. Earthquakes can’t be prevented, but they can be mitigated.
3. Hypocenter is the point where the earthquake rupture begins, usually deep down on the fault.
4. Epicenter is the point on the surface directly above the hypocenter.
5. The Circum-Pacific belt is the zone in Pacific Ocean where about 90% of the world’s earthquakes occur.
6. The world’s deadliest recorded earthquake occurred in 1557 in central China (more than 830000 people were killed).
7. The Richter Scale is used to measure the magnitude of earthquakes, as determined by seismograph measurements of the height of ground oscillations during an earthquake. The Richter scale has no upper limit.
8. The Modified Mercalli Scale measures the intensity of an earthquake; it’s scale based on observable earthquake damage. This scale is composed of 12 increasing levels of intensity
9. Seismograph are device that detects and records the vibrations of an earthquake.
10. Most viewed video about earthquake at Youtube is here: http://www.youtube.com/watch?v=__r5J3ODNx0
Barack Obama Facts
- Barack Obama was born in Hawaii, to a black man and a white woman.
- Barack Obama is the nominee of the democratic party in the 2008 presidential election.
- At age six, Obama moved to Indonesia, where he lived for a few years.
- Obama worked as a community organizer immediately after graduation.
- He also worked as a university professor, political activist, and lawyer before serving in the Illinois Senate from 1997 to 2004.
- He was propelled to stardom by giving the 2004 democratic convention keynote speech.
- Obama has sponsored bills ranging from lobbying and electoral fraud, climate change, weapons control, nuclear terrorism, and better veterans care.
- Obama had never had much of a relationship with ACORN.[more]
- Obama has never run a foundation with Bill Ayers.[more]
Top 10 Interesting Facts About Barack Obama
- 1.) He won a Grammy Award in 2006 for Best Spoken Word Recording. It was for the audio version of his book Dreams From My Father.
2.) He and his wife bought a house in Chicago in 2005. Back then it cost $1.65 million. The house has 4 fireplaces.
Barack Obama's House In Chicago
3.) He doesn’t like ice-cream. He worked in Baskin-Robbins as a teenager. That’s where his distaste for ice-cream comes from.
4.) He loves playing Scrabble. He never commented on how good he is, though.
5.) He is bi-racial. He was born to a Kenyan father and a white American mother. In his book Dreams From My Father he writes that he barely noticed the racial difference between his mum and dad in his young age.
6.) He experimented with drugs. Back in his early years he tried marijuana and cocaine. According to his own words he is not proud of it and considers it a mistake as a young man.
7.) He smokes but wants to quit. After all, there is a non-smoking policy in the White House.
Barack Obama with a cigarette. He is trying to quit but
8.) He was born in Honolulu, Hawaii but went to live in Indonesia with his mum when the parents divorced. There he was introduced to dog meat, snake meat, and roasted grasshopper.
9.) According to his wife Michelle he is very romantic. He is not a door opener but he remembers every anniversary and brings her flowers all the time.
10.) Every night when he is at home he reads the Harry Potter books to his oldest daughter Malia.
Friday, November 14, 2008
Brain is certainly the most amazing part of human body. It becomes more interesting when it does not work the way you expect it should. Psychology frequently establishes our intuitions about how human mind works, but it reveals a number of surprises as well…
Although some psychology students will have heard one or two of these before, here’s a list of brain habits you probably didn’t realize you had:
1) The maximum capacity of your short-term memory is seven.
Humans have basically three forms of memory: Sensory, Long-term and Short-term. Long-term memory is just like hard-drive space. Similarly, Short-term memory functions like a very small RAM. This Short-term memory is capable to hold only about five to nine (seven is an average) items at a time.
Retrieving information longer than this will need you to either pack it together into seven units or store it in Long-term memory. Have you observed that the most phone numbers have only seven digits?
2) The most visible color is Chartreuse.
Yellowish green, chartreuse, is naturally placed right in the middle of the frequencies of visible light. Human eyes have receptors for green, blue and red colors. Being placed in the middle, chartreuse actuates the most of these receptors to fire, making it distinct and easier to spot. For the same reason, in some metropolises, firetrucks have been modified from red to a yellowish green color to make them more visible and obvious to the eye.
3) Subconscious is smarter than you.
Subconscious is smarter than you. In other words, it is more powerful. In a recent study, a square was attributed to a location on a computer screen through a complex pattern. After watching it out, people began to get results better than the chance of recognizing where the square would crop up next. However, when they were inquired to consciously find out the pattern, even given a few hours, nobody really did it!
4) There are two nervous systems.
We have two sets of nervous systems. One controls excitation, while the other controls inhibition. If you hold out your hand, you might observe minor tremors. This is actually stimulated by slight, random differences in the amount each of the two systems are firing.
5) Brain is exceptionally bad at probability.
Your high-school math teacher might have told you about this one. Here what’s interesting isn’t that your brain is bad at probability. But how? In one study, recipients were asked:
Jessica is 31 years old, single, candid, and very promising. She graduated in philosophy. As a student, she was anxious about discrimination issues and social justice, and also took part in anti-nuclear demonstrations.
Assign a rank to the following statements from most probable to least probable: Jessica is a teacher in an elementary school.
- Jessica works in a bookstore and takes Yoga classes.
- Jessica is active in the feminist movement.
- Jessica is a psychiatric social worker.
- Jessica is a member of the League of Women Voters.
- Jessica is a bank teller.
- Jessica is an insurance salesperson.
- Jessica is a bank teller and is active in the feminist movement.
Nearly 90% of students responded that #7 was more probable than #5. This is despite the fact that to be a bank teller and in the feminist movement is entirely contained within the set of #5 (just being a bank teller). It is observable that our minds like to think more details make events more probable, not less.
6) Memory isn’t great either.
Research has revealed that people are highly probable to misremember past events. Even worse, it is quite easy to suggest a memory that never happened. Due to this fact, so-called “repressed” memories should be given a lot of consideration. It is extremely easier to suggest a memory of a situation that never encountered, then it is to recover one that actually did.
7) Depth is perceivable with one eye.
It’s not quite true that depth perception is totally the result of having two eyes. Binocular vision does help in making a three-dimensional image. Still, most of your capability to perceive depth comes from inside your brain. It has been wired to look at angles and proportions to measure distance.
If you needed two eyes to perceive depth, then most optical illusions wouldn’t work and it would be extremely difficult to gather information from two-dimensional images. Not to mention a great number of one-eyed pirates walking overboard.