The student reviews definitions of lose/loose/loss and completes a practice exercise.

In this lesson on atomic structure, learners examine how the binding energy of electrons affects light production in certain phosphors used in x-rays.

Learners examine how air-to-open valves and air-to-close valves are used in different situations. A brief quiz completes the activity.

In this animated object, learners examine the operation of a closed-loop system that maintains the speed of a conveyer belt as heavy boxes are placed or removed.

Learners examine the factors that contribute to the delays in the response time throughout a closed-loop system.

Learners study an animated block diagram that describes the function of each element in a closed-loop system used in industrial automation.

In this animated object, learners examine how an enclosed chambered metering system operates.

In this animated activity, learners examine the operation of normally open and normally closed valves used in hydraulics. A brief quiz completes the learning object.