Do You Know
Questions & Answers on General Knowledge.
Why are flags flown at half-staff?
In the sixteenth century, ships would lower their flag halfway as a sign of submission during battle, and it was said they were flying at “halfmast.” On reaching port, the flag remained half-lowered in honour of those who had sacrificed their lives. In the seventeenth century the ritual moved to land, where it was said the flags were at “half-staff,” as a sign of respect for any individual who had died serving his country beyond the call of duty.
How does wing shape affect flight?
If a racquetball is one long strand of molecules, if you made a cut in the ball, wouldn't the whole ball fall apart?
Why do we call a dollar a “buck”?
How many species of camels are there in the world?
What is the purpose of pistons in an engine?
What is the composition of the phosphors used in fluorescent light bulbs?
How does sound move?
When an egg falls and hits the table, the table pushes up on it, doesn't it? The same with a bouncing ball?
Does the Sun really rise in the east?
Why is Jell-O® so wobbly?
What was special about the Viking ships?
Why do we say,“Never look a gift horse in the mouth”?
Where did the customs of Halloween come from?
A charge coupled device converts light (photonic energy) into electric energy. What is the underlying mechanism that makes this happen?
What makes an airplane fly?
I know it's difficult to get drinking water from salt water, but why is it so expensive?
What is sonar?
How are countries formed?
Why is a private detective called a “private eye”?
How can computer monitors and televisions have images burnt into them over time?
What did the Chinese take to Japan?
What were high-wheelers?
Why do the front brakes of a bike provide more braking power than the rear brakes, assuming both are applied with equal pressure?
How can I make an electric generator from scratch?
How do color-changing eyeglasses work?
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Benefits of Collard
Cruciferous Vegetable Benefits
All cruciferous vegetables including collard greens provide integrated nourishment across a wide variety of nutritional categories and provide broad support across a wide variety of body systems as well. collards may contain goitrogens, which may cause swelling of the thyroid gland. Eating raw collards, therefore, should be avoided in individuals with thyroid dysfunction. However, it may be used liberally in healthy person.