Because solids work better than a liquids for the purpose of displaying information vertically.
The molecules of the blackboard are rather tightly bound to each other and stay that way under the temperature and pressures that the blackboard usually encounters.
Rocks
Yes
beause it does not reflect any colour.
Blackboards are usually sized in centimeters.
A blackboard would be the same temperature as the rest of the room. If the sun shone through the window directly onto the blackboard, the blackboard would absorb more of the sun's heat, and become warmer that the rest of the room.Dark colours absorb heat better than light colours.
Blackboard Inc. was created in 1997.
The population of Blackboard Inc. is 1,780.
Beyond the Blackboard was created on 2011-04-24.
advantages and disadvantages of blackboard
The duration of Beyond the Blackboard is 1.67 hours.
The duration of Murder on the Blackboard is 1.18 hours.
There is more than one size of blackboard...
Go to google and type in your state and blackboard and it should come up.
"Blackboard" in Chinese is 黑板 (Hēi băn)
The surface area depends on the height and width of the blackboard.
Blackboard Jungle was created on 1955-03-19.
Blackboard Inc.'s population is 12,011.