Atheism is simply the lack of belief in a deity or deities. It does not provide a comprehensive explanation for the origin of the universe or the laws of physics. Different atheists may have different perspectives and explanations regarding the origin and nature of the universe.
Regarding the first law of thermodynamics, it states that energy in a closed system is conserved; it cannot be created or destroyed, only transformed from one form to another. However, the first law of thermodynamics applies to the universe as a whole and is based on our current understanding of energy and its conservation.
Atheists who are scientists or adhere to scientific explanations typically rely on naturalistic explanations for the origin and development of the universe. They explore hypotheses and theories based on empirical evidence, observational data, and rigorous scientific methods. These explanations involve concepts such as the Big Bang theory, cosmic inflation, quantum fluctuations, and the laws of physics.
According to current scientific understanding, the universe originated from a singularity during the Big Bang. The laws of physics, including the conservation of energy, are thought to have emerged as the universe began expanding and evolving. The application of the first law of thermodynamics to the early universe may not be fully understood or may require further scientific exploration.
It's important to note that atheism as a belief system does not provide a specific explanation for the origin of the universe or the violation of any specific laws. Individual atheists may have their own interpretations or perspectives on these matters, but they do not represent a universally held atheist position.
Ultimately, the explanations for the origin and nature of the universe are complex and multifaceted, involving ongoing scientific research and philosophical discussions. These inquiries are not exclusive to atheism but encompass a broad range of perspectives and worldviews.