Facts
Collins Annai THE NEW LIGHT- POLLUTION ATLAS
"The milky way has vanished", says a report in the journal science," not because of some cosmic upheaval, but because the bright lights of our galaxy from the view of most Europeans and Americans. This flood of artificial light grieves astronomers because it can interfere with their observations".
In order to help frustrated stargazers, scientists in Italy and the United States have compiled a new atlas that charts global light pollution.
Unlike previous maps that simply showed the location of the "white lights dotting continents at night", the new atlas, accessible on the Internet, "includes continental maps and a few more detailed ones, for example, showing star visibility from different parts of Europe" says science.
Juliet and Juliana The fist of your hand is the size of your heart?

Anger reduces your life span by 120 seconds?

The number of teeth in the mouth of a horse determines its age?

Grinning from ear to ear makes you wrinkle and look old before your time?

Ten hours of sleep will make you grow old before your time?

We use about 78.2% of our facial muscles to frown?


Some Science Questions
Rigid Body Rotation

A large horizontal disk is rotating on a vertical axis through its center: For the disk, I=4000 kilogram per meter squared. The disk is coasting at a rate of 0.150 rev/s when a 90kg person drops unto the disk from an overhanging tree limb. The person lands and remains at a distance of 3m from the axis of rotation. What will be the rotation speed after the person has landed.
Ans: 0.125rev/s
Magnetic Flux A copper disk of 10cm radius is rotating at 20rev/s about its axis and with its plane perpendicular to a uniform field with B = 0.6T. What is the potential differnece betwenn the centre and rim of the disk.
Ans: 0.38V

Brain Teasers
Emmanuel Adinkra
  1. A man committed suicide in a room without any furniture. All that was seen was a pool on water under him. How did he commit the suicide?
  2. There are a hundred people on a ship on a journey around the world. When they came back from the journey the number had decreased to fifty. How is that possible if none left the ship and none died?
  3. If you are running an athletics race and you pass the second person what will be your position?
Yaw Djin
  1. A man and his son had a car accident and the father died while the son was quickly rushed to the hospital. When he gets there, the doctor says : "I can't operate on my son? How is that possible?
  2. A man travels with a horse on a one day trip from town A to town B. He leaves on Monday and arrives on Sunday. How is that possible?
  3. There is bank robbery which entails a hostage situation. The phones are out and there is no cop in sight. Apart from the only obvious gun, there is no other gun anywhere close. How will you handle the situation?
Richard Osafo
  1. You can spell anything so spell it?
  2. If a plane is flying over a cemetary which is at the boarder between two countries and there is a crush, where will the suvivers be buried?
  3. If there are 10 frogs on a log in a river and 1 decides to jump into the river, how many frogs will be left on the log?
  4. You are in a room and all there is, is a mirror and a bench. You desperately need to get out and there are no windows or doors. How will you get out?

 

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