Quantum tunneling occurs in ordinary room temperature matter all the time. In fact, it is an essential process in many chemical reactions, particularly those involving hydrogen and other light atoms. For example, the process of nuclear fusion in the Sun, which powers the production of light and heat, occurs through quantum tunneling. Additionally, quantum tunneling is an important factor in the operation of many electronic devices, such as transistors and tunnel diodes, and plays a crucial role in the functioning of biological systems, such as in the process of enzyme catalysis. However, the probability of quantum tunneling occurring is extremely low in most cases, and its effects are often only noticeable on a microscopic scale.
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