The cross product, also known as the vector product, is a vector operation where we determine a vector that is perpendicular to two component vectors. The cross product is used in many areas of science such as in determining magnetic force or even simply determining the volume of a three-dim...
they propose using a closed loop of "working fluid" to remove heat from the upper ocean in a similar way to the mechanism of a refrigerator. They're granted US patent 3312054 for their "Sea Water Power Plant," based on closed-cycle OTEC using propane as the working fluid, on April 4,...
Where a simple barcode presents a string of information as a one-dimensional line of black and white bars, a 2D barcode packs a lot more information into a grid of black and white, square-shaped dots. What are the advantages of 2D barcodes? If we already have barcodes, why do need so...