In this connection, the content of a preliminary scope statement includes three major sections, such as a clear description of the project, its outcomes (deliverables), and approach. Letâs briefly review each of the scope statement sections. 1  Project Description.
History of the Safety Stop. Today, safety stops are a common practice. Every diver knows that before ascending, one should stop at 5 metres / 15 feet for three minutes to help off-gas the nitrogen absorbed while diving. The purpose of the safety stop is to unload nitrogen, however itâs intended to give your body time to release that nitrogen slowly.
A stop is a measure of exposure relating to the doubling or halving of the amount of light. Image by Hamed Saber. The amount of light captured while taking a photo is known as the exposure, and it's affected by three things - the shutter speed, the aperture diameter, and the ISO or film speed. These are all measured using different units, so the concept of stops was invented as a convenient way to compare them.