science

Libration

Today on Wednesday’s Wonderful World of Wikipedia is the concept ofLibration. In astronomy libration (from the Latin verb libro -are “to balance, to sway”, cf. libra “scales”) refers to the various orbital conditions which make it possible to see more than 50% of the moon’s surface over time, even though the front of the Moon is tidally locked to always face towards the earth. As the orbital processes are repetitive, libration is manifested as a slow rocking back and forth (or up and down) of the face of the orbital body as viewed from the parent body, much like the rocking of a pair of scales about the point of balance.

Ecological Footprint And Blog Action Day

Ecological Footprint is a resource management tool that measures how much land and water area a human population requires to produce the resources it consumes and to absorb its wastes under prevailing technology. Essentially, it measures human demand on nature.The science is actually pretty robust which gives it tremendous merit. Right now, humanity’s Ecological Footprint is over 23% larger than what the planet can regenerate. Ecological Footprint accounting shows that, as of October 6, 2007, humanity has consumed the total amount of new resources that our planet can produce this year.

Figure out what your personal ecological footprint is. Full disclosure of my own personal Ecological Footprint can be found after the jump (and no, I’m not proud of it).

Q: Assuming that (a) Tom Cruise’s level of consumption is in parallel with his annual salary, and that (b) everyone on earth has the opportunity to live like Tom Cruise: How many Earths would we need to sustain this level of consumption?

A: About 2700 Earths. 2700 fricking Earths!

My Spinning Brain

I’m left handed. That’s supposed to indicate that I am more right-brained and my thinking is more visual-simultaneous based versus the linear-sequential thinking of right handers. I don’t know if that’s true or not. But the theory of brain lateralization says this is generally true (And by “generally” I mean 95% of right handers have their language functions in the left hemisphere, only 18.8% of left-handers have their language function lateralized in the right hemisphere. Additionally, 19.8% of left-handers have even bilateral language functions). My personality would indicate that I’m more left-brained, despite my handedness. Here are the characteristics of right and left-brained people:

Left Brain Functions:

    sequential
    uses logic
    detail oriented
    facts rule
    words and language
    present and past
    math and science
    can comprehend
    knowing
    acknowledges
    order/pattern perception
    language: grammar/words, pattern perception, literal
    knows object name
    reality based
    forms strategies
    practical
    analytical
    safe
    verbal

Right Brain Functions:

    simultaneous
    uses feeling
    “big picture” oriented
    imagination rules
    symbols and images
    present and future
    philosophy & religion
    can “get it” (i.e. meaning)
    believes
    appreciates
    spatial perception
    language: intonation/emphasis, prosody, pragmatic, contextual
    knows object function
    fantasy based
    presents possibilities
    impetuous
    holistic
    risk taking
    imagistic

Below is an optical illusion that is supposed to help determine your “brain-dedness”. What direction is she spinning for you? If the girl is spinning counterclockwise then you use more of the left side of your brain. If the girl is spinning clockwise, then you use more of the right side of the brain and vice versa.

Spinning Girl

For me she was spinning counterclockwise and I had trouble believing she could spin the other way. After about a minute I was able to get her to switch by concentrating on the point where her foot meets her foots shadow.

Wednesday’s Wonderful World Of Wikipedia: The Mpemba Effect

This time around on Wednesdays Wonderful World of Wikipedia, I present to you the Mpemba Effect. I been told many times that the Mpemba Effect actually existed. However, nobody was ever able to give me the name of it, they just told me that it was true. It goes against everything (which is very little, mind you) I know about thermodynamics so I have always blown it off as urban legend.

Wednesday’s Wonderful World Of Wikipedia: Gravity Hills

A gravity hill, also known as a magnetic hill (and sometimes a mystery hill or a gravity road), is a place where the layout of the surrounding land produces the optical illusion that a very slight downhill slope appears to be an uphill slope. Thus, a car left out of gear will appear to be rolling uphill. There are hundreds of known gravity hill locations around the world. These “paranormal” sites also tend to have names like “Haunted Hill”, “Magnetic Hill”, or “Anti-gravity Hill”, reflecting attribution by local folklore of the unusual properties of the area to such “mysteries” as the supernatural or magnetism. While humans also have a sense of balance to determine the inclination of the ground, visual cues can override this sense, especially if the inclination is shallow. This wikipedia link also lists all known gravity hill locations.

237 Reasons To Have Sex

Technically you only need one reason, actually, any reason. But you are so much more complicated than that, aren’t you?

Well that is what psychologists Cindy Meston and Dr. Dave Buss, professors of psychology at the University of Texas at Austin, think. In fact, they have put out a report (pdf) analyzing 327 reasons people have sex. That’s pretty complicated in my book. The reasons breakdown into four major groups, each of the breakdown into 13 subgroups as follows:

Physical

  1. Stress reduction
  2. Pleasure
  3. Physical
  4. Desirability

Goal-directed

  1. Resources
  2. Social Status
  3. Revenge
  4. Utilitarian

Emotional

  1. Love and commitment
  2. Expression

Insecurity

  1. Self-esteem boost
  2. Duty/pressure
  3. Mate guarding

According to the study, the most and least frequently endorsed reasons for having sex were common among the great majority who were surveyed. There were nine themes that appeared to characterize the most frequently endorsed reasons for having intercourse:

  1. pure attraction to the other person in general
  2. experiencing physical pleasure
  3. expression of love
  4. having sex because of feeling desired by the other
  5. having sex to escalate the depth of the relationship
  6. curiosity or seeking new experiences
  7. marking a special occasion for celebration
  8. mere opportunity
  9. sex just happening due to seemingly uncontrollable circumstances

Their studies reaffirmed many sexual stereotypes about men and women. On the other hand, some of these stereotypes were contradicted. When examining the most frequently cited reasons for having sex, men and women were remarkably similar in the 20 of the top 25 reasons given were identical for men and women.

Men showed significantly greater endorsement of having sex due to physical reasons, such as ‘‘The person had a desirable body’’; ‘‘The person was too ‘‘hot’’ (sexy) to resist,’’ and simply because the opportunity presented itself: ‘‘The person was available’’; ‘‘The person had too much to drink and I was able to take advantage of them.’’ Men exceeded women on many items that pertained to physical pleasure such as, ‘‘I wanted to achieve an orgasm,’’ and ‘‘It feels good.’’ Men more than women reported having sex as a way to improve their social status (e.g., ‘‘I wanted to enhance my reputation’’; ‘‘I wanted to brag to my friends about my conquests’’) and their sexual experience (e.g., ‘‘I needed another notch on my belt’’; ‘‘I wanted to improve my sexual skills’’). Finally, men exceeded women on endorsing a variety of utilitarian reasons for sex: ‘‘I wanted to change the topic of conversation’’; ‘‘I wanted to improve my sexual skills.’’ Women exceeded men on only three of the 237 reasons: ‘‘I wanted to feel feminine’’; ‘‘I wanted to express my love for the person’’; ‘‘I realized that I was in love.’’

Their findings contradict the stereotype that women, more than men, use sex to obtain special favors. In their study, men were more likely to endorse reasons for having sex that involved utilitarian goals (“To get a favor from someone”).

Below is a table that list nearly all of the 237 reasons Meston and Buss derived from their surveys. Along with each reason is the the category that that particular reason belongs to and the score for that reason (somply put the score refers to the commonality of that reason used between the sexes, please read the full report for a more precise understanding).

[table id=2 /]

However, in the end Meston and Buss conclude that:

All of these diverse theoretical perspectives, when taken together, point to a singular conclusion: The reasons people have sex are likely to be far more numerous and psychologically complex than previous taxonomists have envisioned.

There, they said it, you are complicated.

I Feel like there are already enough reasons to have sex. I mean after all, one is enough for me. But Dr. Buss and Dr. Meston are working on a new project: a list of reasons to say no to sex. If you want a chance to help out, interested participants are invited to fill out a questionnaire.

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