Do You Know
Questions & Answers on General Knowledge.
Who was Mona Lisa?
The Mona Lisa is probably the most famous painting ever created. It was painted by Leonardo da Vinci. The model is said to be Lisa Gherardini, who was the wife of A nobleman. The painting is in the Louvre, Paris.
What is the "optimal" weight distribution for a pinewood derby car in front/behind, above/below the center of gravity?
Why is it that when you have water on your skin and an air current travels over it, your skin gets cold?
Why do high altitude places have different cooking temperatures than sea-level places?
How does radar absorbent materials work. How effective is stealth technology?
When TV screens or computer monitors are shown on television shows, they flicker or bars of light wave across them. Why does this happen?
How do collisions with tungsten atoms in the filament of a flashlight convert the current's electrostatic and kinetic energies into thermal energy?
Where does the extra energy go after ultraviolet light goes through the phosphor coating? Is it lost as heat?
I would like to know a little more about the ac slip ring motor and its uses, particularly in elevators.
Is the red light effect in xerographic copiers the same concept behind red lights in a darkroom? Does film have the same sort of properties?
How are plants and animals related?
Where do we find heat?
What is the origin of the phrase, ďIíll be hanged if I do and hanged if I donítĒ?
What is a cubit?
How does a vacuum cleaner pick up dirt?
What kind of tape recorders are the best: cassette recorders or the ones with bigger spools?
How does an electric car work?
Why is alternating current better than direct current?
How do polarizing materials work?
If electricity lights a bulb, does it also light my torch?
Why does a gas lantern use a silk mantle? How does it produce such intense light
Who are the Amish?
Can penguins walk?
What is pop music?
Why does the bigger ball have more gravity pulling on it? Because it weighs more? Which causes which?
Where is the best place to put a microwave oven? Is it dangerous to place it on the refrigerator?
Precautions while using Facebook
Precautions while using Laboratory Thermometers
New Years Eve Cake Ideas
Dating Tips For Men