A mesmerizing pendulum wave demonstration with 16 bowling balls in a North Carolina forest by Christopher Jobson on September 9, 2014. The length of time it takes a ball to swing back and forth one time to return to its starting position is dependent on the length of the pendulum, not the mass of the ball.A longer pendulum will take longer to complete one cycle than a shorter pendulum.he length of time it takes a ball to swing back and forth one time to return to its starting position is dependent on the length of the pendulum, not the mass of the ball. A longer pendulum will take longer to complete one cycle than a shorter pendulum.
SQF is designed as a food safety program, but it also covers product quality, assuring consistent quality and meeting buyer specifications. The SQF Program is administered by the SQF Institute (SQFI), a division of the Food Marketing Institute (FMI), and is the result of more than 15 years of development.
1 SQF has two levels of certification to choose from that are GFSI recognized: 2  Level 2: This level is focused on food safety, and does not include quality requirements. 3  Level 3: This level includes both food safety and quality management requirements.QF Basics. The SQF Code has different requirements specific to different industry segments, meaning that many different types of food companies can use the SQF Code to build a system that is right for them. This is achieved by presenting requirements in different Modules of the code.