The symbol of a square inside of a square for electrical purposes means double insulated.
It is a symbol used by recovering alcoholics, the three points represent the 3 parts of the disease, the circle means perfection.
┴ that one. Sometimes it'll have a small square to indicate a right angle.
Figure B
I have a gold ring that has a square inside the band an it has a dot in the middle of square. What does it mean?
The symbol you should be looking for is " √ ".
The 'radical': √
The radical symbol ( √ ) followed by a line above what's in the radical, designates positive square root.
A symbol to help people
There are no explicit symbols. The non-negative square toot is called the principal square root.
A God's symbol is what is used to represent them.
Because there is no "real" sqrt of a negative number, i is used as a symbol, eg sqrt -4 = 2i
The symbol that is used to represent a joule is the letter "J". This is a derived unit of energy. It can also be used to represent work, and an amount of heat.
The "#" symbol. (shift key + 3)
A symbol.
A variable
variable