These users also state that being part of an activity that is at high risk for injuries shouldnât automatically make that activity a sport. According to Thetoptens.com though, cheerleading is ranked number two on the top ten most dangerous sports. In the info graphic below, you can see that cheerleading is ranked right below football when it comes to total catastrophic injuries from 1982-2008 (AACCA.org).
What is a 7Z file? Files with the .7z extension are very similar to Zip files. These files are compressed archive files, usually created by the 7-Zip file archive utility. 7Z files can make it easier to send files and folders over email and the Web. The 7Z file format also makes it easier to download files from the Web due to the reduced file size.
Definition. PTZ stands for Pan, Zoom and Tilt. This refers to the capabilities of automated cameras and video recorders. Essentially, a PTZ camera is set in a particular place, but has the ability to turn, usually in a complete circle, tilt at different angles both up and down, and zoom in on particular objects.TZ, or pan, tilt and zoom cameras can make a 360-degree sweep of the environment, change angles to look at objects both above and below the camera, and zoom in to give objects greater detail. These cameras are used most often in surveillance situations where remote viewers can track subjects.