Refraction represents a change in the direction of propagation when beams of light encounter a medium with a different density.
Reflection is the return of light to the medium it came from when it encounters a mirror.
Answer:
The formula does not require arguments.
Explanation:
One of the programs or software that runs on a computer is Microsoft Office programs. One of these programs is called Microsoft Excel. It is a spreadsheet program where calculations can be made, graphs, diagrams can be plotted and drawn as well.
In other to utilize Microsoft Excel properly, we make use of what we call FUNCTIONS. Functions in Microsoft Excel are defined as formulas, that have already been prepared or created before hand in the Microsoft Excel program so that we can be able to used Microsoft Excel properly and efficiently. Functions may or may not require ARGUMENTS to carry out necessary calculations.
An ARGUMENT is a number or variable that functions require to carry out or do their calculations.
Examples of the functions found in Microsoft Excel are the TODAY and NOW functions. These two functions are used in spreadsheets on Microsoft Excel with regards to Date and Time.
TODAY function is used to give us or update the current or present date while the NOW function gives us or updated the current date and time.
The uniqueness or similarities between the TODAY and NOW functions is that their formula do not require arguments.
