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Many theories have been put forward to explain why the blackboard is green. One theory was that the green was chosen to be pleasing on the eyes. Since students need to focus on what is written on the board, manufacturers picked the color green. Tests also proved that other colors such as yellow or orange could strain the eyes if starred for long. Today the blackboard come in different colors. After green, it is Black and White which are popularly used.
What else can I help you with?
What is white when it's dirty and black it's clean?
A blackboard seems to fit.
What does tableau mean?
Tableaus means blackboard or chalkboard, honey.
What is the size of a classroom blackboard?
primary school large then 3600mm * 1000mm middle school large then 4000mm * 1000mm
Green Giant vegetables has two mascots The Jolly Green Giant and who?
little green sprout
What is Bill Cosby favorite color?
Bill Cosby's Favorite color was Green.
What is the two word adjective of blackboard?
green board
What was the inventor of the blackboard like?
The guys name is James Pillans. He invented this piece in 1801 and called it the blackboard. In the 1930s the name "chalkboard" was introduced. The blackboard is mostly for teaching. It has different variaties of colers,such as black,green,and brown.
Why do board called as blackboard even its color is green?
Blackboards used to be made of black slate, hence the name "blackboard". As technology evolved, most blackboards are now made of green materials like porcelain or laminate, but the original name stuck. The common usage of the term "blackboard" persists even though the color is green.
Why the blackboard called a blackboard if the color of the board is green?
Originally they were made of thin sheets of a type of rock known as slate- which is very dark gray (black) in color. Later they used a man manmade material that was lighter and cheaper, and changed the color to green- better visibility. But we still use the old name.
When was Blackboard Inc. created?
Blackboard Inc. was created in 1997.
What is the population of Blackboard Inc.?
The population of Blackboard Inc. is 1,780.
What are the advantages and disadvantages of blackboard learning system?
advantages and disadvantages of blackboard
What is the duration of Murder on the Blackboard?
The duration of Murder on the Blackboard is 1.18 hours.
What is the duration of Beyond the Blackboard?
The duration of Beyond the Blackboard is 1.67 hours.
When was the blackboard created?
Beyond the Blackboard was created on 2011-04-24.
Why is a blackboard is green?
In recent years, green colored boards have largely replaced blackboards. Studies reveal that green color relaxes the eyes and prevents fatigue. Furthermore, the human eye is highly sensitive to the green color, and for this reason, the use of green boards has extensively increased.
Unit of measure of width of a blackboard?
Meter is used in finding the width of the blackboard.
