How to Derive the Day of the Week?

Answer The date of your birth or anniversary is something nearly everyone can remember, but do you know on what day of the week your special day fell? Short of pulling out an old calendar, it can be hard ... Read More »

Top Q&A For: How to Derive the Day of the Week

How do I derive the day of the week?

Gregorian CalendarLook at a current calendar. According to the “Columbia Viking Desk Encyclopedia,” the Gregorian calendar, which most people use today, evolved from the Roman calendar as refor... Read More »

Where did Bluetooth derive its name?

Bluetooth derives its name from the 10th century Viking king, Harald Blatand. "Blatand" loosely translates to "blue tooth." The technology was given its name by its inventors: engineers from Swedis... Read More »

How to Derive Physics Equations?

Calculus, especially derivatives, plays a key role in physics. You probably learned about slope in high school algebra. A function with a curved graph has a constantly changing slope. The slope is ... Read More »

Where did the word vexed derive?