Pendulums have played an important role in keeping time throughout history. However, they have some challenges that affect their accuracy. Let’s break those down:

1. Sensitivity to the Environment:

   • Things like heat and changes in air pressure can change how the pendulum swings.
   • What can be done? We can use materials that are less affected by these changes or keep the pendulum in a controlled area.

2. Energy Loss:

   • Friction and air slowing the pendulum down make it less precise.
   • What can be done? We can use modern technology, like electronic tools, to reduce this energy loss.

3. Limits on Accuracy:

   • Mechanical pendulums can't be perfectly accurate.
   • What can be done? We can use atomic clocks, which are much more precise, for better timekeeping.

Even though pendulums were really important in the past, they have several practical issues today.