Do You Know
Questions & Answers on General Knowledge.
Are there any risks, other than a case of implosion, with regards to exposure to normal fluorescent lighting?
While the phosphors in fluorescent lamps are not considered to be toxic, they do contain a tiny amount of mercury. This mercury is an essential part of the operation of the lamp (it is what creates the initial light during the electric discharge). While most fluorescent lamps are simply discarded into landfill, some facilities (including the University of Virginia) dispose of them more carefully. The University of Virginia breaks the lamps to collect the phosphors and then distills the mercury out of the phosphors. The phosphors are then entirely non-hazardous and the mercury is recycled.
Which airport is the busiest in the world?
What is an orbit?
Why do certain items glow-in-the-dark?
How were the various kingdoms governed?
What happens to gas in a gas mask?
What happens to the undigested food?
What did dinosaurs use their teeth for?
Why don't batteries work as well in cold environments?
What is a "landlocked" country?
Where can you find orangutans?
How does an operational amplifier work?
How does a light bulb work?
Why are swept wings preferred for transonic/supersonic flight, but not for lower speeds?
Why can water appear brown, blue (as in the ocean), and clear (as in a glass of water)?
What is the difference between internal and external combustion engines?
Why do we say “Bless you” after a sneeze?
How did manufacturing change?
Can electricity make my hair stand on end ?
Which was the oldest Mesopotamian civilization?
If only electrons move around, why do you keep using positive charges in the demos?
What is the efficiency of a 60-watt bulb to convert electricity to light?
What is the difference between a tube amplifier and a solid-state amplifier? Does the human ear prefer one over the other?
Is the Sun really a star?
How does a picture camera work?
Which was the largest meat-eating dinosaur we know of?
Celebration of Dhanteras
Benefits of Plum
Class 9 -Factorization of Polynomials
CSS Interview Q & A
Facts About Bees You Probably Didnt Know
The Border Collie is a working and herding dog breed developed in the English-Scottish border region for herding livestock, especially sheep. It was specifically bred for intelligence and obedience.
Ranked number one in Stanley Coren's The Intelligence of Dogs and typically extremely energetic, acrobatic, smart and athletic, they frequently compete with great success in dog sports, in addition to their success in sheepdog trials and are often cited as the most intelligent of all dogs. In January 2011, a Border Collie was reported to have learned 1,022 words and acts consequently to human citation of those words.
Dogs bred for showing are more homogeneous in appearance than working Border Collies, since to win in conformation showing they must conform closely to breed club standards that are specific on many points of the structure, coat, and colour. Kennel clubs specify, for example, that the Border Collie must have a keen and intelligent expression, and that the preferred eye colour is dark brown. In deference to the dog's working origin, scars and broken teeth received in the line of duty are not to be counted against a Border Collie in the show ring. The males' height from withers comes from 48 to 56 centimetres (19 to 22 in), females from 46 to 53 centimetres (18 to 21 in).