The use of slit scan photography is actually quite old. It is often called line-scan, photo finish, or streak photography. Slit scan photography has a rich and colorful history rooted in chemical analog photography. This technique is often used to visualize high-speed events, such as missiles and bullets, although it is probably best known as photo finish photography that is used to determine the outcome of races.
Thanks to Megan McLeish for sharing this post!!