For many, Excel is the go-to program for charting graphs for labwork results or for data entry and accounting. Its formula-based auto-calculations helps us save time and in many jobs it is a requirement to know how to work Excel before you even get the jo
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How Star Wars Lightsabers Work. This infographic shows the inner-workings of the lightsaber and how its powers can be used for good or evil depending on whose hands it is in. Read on for more fun lightsaber facts and how it has evolved over the years.