More important than the functions of the techniques she uses independently is how Roiphe uses them together. For example, had she bluntly stated early in her essay that women are “female chauvinist sows,” without preceding it with contrast, a quite different effect would have been created. Her readers, particularly the women, would have undoubtedly been offended. This approach would certainly have prevented the essay from being convincing. It is obvious that Roiphe purposely used the techniques in a planned way. This allowed her to create a specifically designed essay that was beneficial in helping her present her ideas.
Most of the people find it difficult to differentiate a frog from a toad. They normally mix them up. Although they seem so similar in appearance, they certainly have numerous dissimilarities too.
Frogs are found in many different shapes, sizes, colors, and textures. Frogs have smooth, wet skin. They live most of the time in or near water. They have different eye colors including brown, silver, green, gold and red along with different shapes and sizes of pupil. Some of the frogs have sticky padding on their feet while others have webbed feet. It is obvious that not even all the frogs have same qualities.
Traditional phase-contrast methods enhance contrast optically, blending brightness and phase information in single image. Since the introduction of the digital camera in the mid-1990s, several new digital phase-imaging methods have been developed, collectively known as quantitative phase-contrast microscopy . These methods digitally create two separate images, an ordinary bright-field image and a so-called phase-shift image . In each image point, the phase-shift image displays the quantified phase shift induced by the object, which is proportional to the optical thickness of the object.