VSTACK and HSTACK are dynamic array functions, meaning the result spills from the cell in which you type the formula, and any changes to the data in the source arrays are reflected in the stacked ...

Excel doesn’t have a direct equivalent. To achieve the same result, you’d either have to piece together complex formulas with functions like SEARCH or write custom VBA scripts. While those approaches ...

A few weeks back, we reported on a research group that figured out how to measure heartrate using perturbations in WiFi signals. [Nick Bild] was interested in this so-called “Pulse-Fi” technique, but ...