In acute laryngitis, which is the most common cause of voice loss and hoarseness, you suddenly lose your voice or become hoarse. 1  Acute laryngitis can result from: 2  Viral infection. Viral infections, such as those that cause the common cold, can cause your vocal cords to swell. 3  Bacterial throat infection.
The definition of a hood is slang for a neighborhood. An example of a hood is what youâd call the area in which you live in the inner city. Hood is defined as the front top of a car or other vehicle that covers and protects the engine, or a protective covering that removes fumes or exhaust.
What Does a Lens Hood do? The primary function of a lens hood is to help block off-axis light from entering your lens. This will reduce the effect of flare. Flare shows up in your images in two ways. The first type of flare is what I call 'starburst' flare, where a spot of color or light shows up in your image. Second is 'fade' flare.