This problem was solved by Dolph in 1946. He derives a method for obtaining weights for uniformly spaced linear arrays steered to broadside (=90 degrees). This is a popular weighting method because the sidelobe level can be specified, and the minimum possible null-null beamwidth is obtained.
Some differences is that: Photography can form a picture in seconds, where as a painting can take months to create. Also, photography is a cheaper, and also, you can make sooo many images of the same photo via the negatives. Paintings have only One, unless the artist is bothered to paint the exact same painiting! lol.
JPG vs PNG. When it comes to images, there are a number of formats to choose from in saving to a digital copy. Each format has its own strengths and weaknesses, and choosing the right format can be a great advantage. Two of these formats are JPG and PNG. The main difference between JPG and PNG is the compression algorithms that they use. JPG uses a lossy compression algorithm that discards some of the image information in order to reduce the size of the file. In comparison, PNG uses a lossless algorithm that keeps all the information.