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When you calculate results that are aiming for known values, the percent error formula is useful tool for determining the precision of your calculations. The formula is given by: The experimental value is your calculated value, and the theoretical value is your known value.
The BODMAS rule, which stands for Brackets, Orders (i.e., powers and roots), Division and Multiplication, Addition and Subtraction, is not attributed to a single inventor. Instead, it is a mnemonic that helps remember the order of operations in mathematics, developed through the evolution of mathematical notation and conventions over centuries. The rule is widely used in many countries to ensure consistent results in calculations.
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In emissive conditions (a TV screen): The addition of Red and Green results in "Yellow". The addition of Red and Blue result in "Magenta". The addition of Green and Blue results in "Cyan". The addition of Red, Green and Blue results in "White".