Tuesday, September 14, 2010

Why do onions make you cry?



Onions are made of cells just like other plants. The cells are divided into two sections separated by a membrane.One side of the membrane contains an enzyme which helps chemical processes occur in your body. The other side of the membrane contains molecules that contain sulfur.The contents on each side of the membrane when you cut an onion will mix and cause a chemical reaction. This will produce molecules such as ethylsufine which make your eyes water.



To prevent crying when you cut an onion;
  • Cut it under a running tap of cold water.

"The sulfur compounds dissolve in water and are rinsed down the sink before they reach your eyes."
  • You can also put the onion in the freezer for ten minutes before you cut it.

"Cold temperatures slow down the reaction between the enzyme and the sulfur compounds so fewer of the burning molecules will reach your eyes."

Wednesday, January 20, 2010

Do You Know Why We Look Like Our Parents?



Do you often wonder why a child resemble their parents?

The characteristics of individual beings are passed from one generation to the next in their chromosomes. But it doesn't mean that a person lost it's uniqueness. Each of our parents gives us 23 chromosomes, making 46 in all. That means that we have two versions of our genes, but one is often dominant. We can see the effect of a dominant gene, but the recessive gene is still there and can be passed on to our children.

What are these chromosomes? Chromosomes are tiny threads that are present in all cell apart from our red blood cells. They contain all the information from an en tire person to develop. There is a special pair that actually determines a persons sex.

Short sections of a chromosomes are called genes. Each genes carries the instructions for a specific characteristic such us an eye color, hair color, height and etc. Many of these genes work with other genes, so it is not easy to say what effects they will have. At the moment the mother's egg is fertilized, the genes starts issuing instructions for the molding of a new human being. Every characteristics that we inherited from our parents will be passed through the coding of the genes within the chromosome and will be passed down to the next generation.


Fact: The gene for brown eyes is the dominant gene. Two brown eye
genes give brown eyes, one brown gene and blue gene usually
give brown eyes. Two blue eyes genes give blue eyes.


Wednesday, October 28, 2009

Why do butterflies taste with their feet?



Did you know...

...that butterflies taste with their feet?

Their taste sensors are located in the feet, and by standing on their food, they can taste it!
All butterflies have six legs and feet. In some species such as the monarch, the front pair of legs remains tucked up under the body most of the time, and are difficult to see.

Sunday, August 30, 2009

Do you Know Why?




Some Engaging History

  • A pearl engagement ring is said to be bad luck because its shape mimics that of a tear.
  • The right of any woman to propose on February 29 ( on a leap year ) goes back hundreds of years to when leap years were not recognized in English Law. It was considered a day that had no legal status, and so it was a day to which tradition no longer applied. Therefore, women were free to propose to the man they wished to marry.
  • You can have the remains of a loved one ( a departed husband or loyal pet) turned into a diamond. It's creepy, but true. This is made possible because during cremation carbon is released, which can be heated into graphite. The end result is a fancy-colored diamond composed of a loved one's remains. Hey, it's easier to carry around than an urn full of ashes.
  • Diamonds were once believed to be deadly if swallowed.
  • The word "diamond" originates from the Greek word "adamant", which means steadfast or invincible. This is how diamonds, which were known to be indestructible, got their name.
  • The average cost of an engagement ring is $ 3,165.00
  • One in five men propose on bended knee.
  • The reason why engagement rings are worn on the third finger of the left hand dates back to the early Egyptian belief that the vein of love ( vena amoris) ran directly from the heart to the top of the third finger on the left hand.
Do you Know that....
  • The largest uncut diamond ever found was the Cullinan in South Africa circa 1905, coming in at 3,106 carats.
  • Rocker Chris Robinson proposed to his wife, actress Kate Hudson, with an old-fashioned 5-carat Asschercut diamond in an art deco setting.
  • The King of Rock and Roll, Elvis Presley, proposed to his then-girlfriend, Priscilla Beaulieu, with a 3.5-carat diamond ring surrounded by an additional row of detachable diamonds.

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