Introduction:
Quantum mechanics is a fundamental theory in physics that describes the behavior of matter and energy at the smallest scales. It is a branch of physics that deals with phenomena at the atomic and subatomic levels and is characterized by wave-particle duality, uncertainty principles, and quantization of energy levels.

Indications of quantum mechanics:
Quantum mechanics provides a framework for understanding the behavior of particles at the microscopic level. There are several indications of quantum mechanics, which are as follows:

1. Wave-particle duality:
One of the most fundamental aspects of quantum mechanics is the wave-particle duality. It suggests that particles, such as electrons and photons, can exhibit both particle-like and wave-like characteristics. This means that even stationary particles can exhibit wave behavior, contradicting the classical notion of particles being localized objects.

2. Particle behavior:
Quantum mechanics encompasses the behavior of both moving and stationary particles. It does not restrict wave behavior solely to moving particles. Even particles at rest can exhibit wave-like properties, such as interference and diffraction.

3. Charged and neutral particles:
Quantum mechanics applies to both charged and neutral particles. The wave-particle duality and other principles of quantum mechanics are not limited to charged particles only. Neutral particles, such as neutrons and neutrinos, also exhibit wave-like behavior and are subject to the laws of quantum mechanics.

Conclusion:
In conclusion, the correct indication of quantum mechanics is that even stationary particles have wave behavior. Quantum mechanics is not limited to only moving particles or charged particles. It encompasses the behavior of all particles, both charged and neutral, and describes their wave-particle duality. The principles and concepts of quantum mechanics have been extensively tested and verified through various experiments, and they provide a comprehensive framework for understanding the behavior of matter and energy at the microscopic level.