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.
â¢ A picture can be anything from a drawing to a painting, to an etching. â¢ All the images that we take without any knowledge in photography and which do not require our photographic talent are known as pictures. Related posts: 1  Difference Between Photo and Photograph. 2  Difference Between Photo and Image. 3  Difference Between Drawing and Painting. 4  Difference Between Artist and Designer.
In Photography, refraction has the same rules as in physics. Well, photography is all about engineering and physics.Refraction encompasses the situation where light goes through a semi transparent object and the photons are slightly drifted from its normal course because the surface they hit separates them.efraction occurs because waves move at different speeds in different bodies. Because a wave hits the other medium at an angle, part of the wave changes speed earlier than the â¦ rest, turning the waves. this is most obvious with light waves in water, but it happens with all types of waves in any change of medium.