The laws of nature are a set of rules that govern the world around us. They are discovered through observation and experimentation and are universally valid. These laws are not restricted to any one field of study and are equally applicable to living beings and inanimate matter. The laws of nature are immutable, simple, and falsifiable.
There are two competing theories of the laws of nature. The first, the Regularity Theory, states that laws of nature are statements of the uniformities or regularities in the world and are mere descriptions of the way the world is. The second, the Necessitarian Theory, posits that laws of nature are the principles that govern the natural phenomena of the world – the natural world obeys these laws.
The First Law of Biology states that all living organisms obey the laws of thermodynamics. The Second Law of Biology states that all living organisms consist of membrane-encased cells. The Third Law of Biology states that all living organisms arose in an evolutionary process.
Characteristics | Values |
---|---|
Laws of Nature vs. Laws of Science | The Laws of Nature are distinct from the Laws of Science. |
Two Principal Views | Regularity Theory and Necessitarian Theory |
Shared Elements in the Competing Theories | Five conditions necessary for a statement's being a Law of Nature |
The Case for Necessitarianism | Accidental Truths vs. Laws of Nature |
The Case for Regularity | Naturalizing Philosophy |
Revisiting Physical Impossibility | Regularity and Explanation |
Problems with Necessitarianism I | Inverting the Truth-making Relation |
Problems with Necessitarianism II | Unempiricalness |
The Regularists' Trump Card | Dissolution of the Problem of Free Will and Determinism |
Is the Order in the Universe a Cosmic Coincidence? | |
First Law of Biology | All living organisms obey the laws of thermodynamics |
Second Law of Biology | All living organisms consist of membrane-encased cells |
Third Law of Biology | All living organisms arose in an evolutionary process |
What You'll Learn
All living organisms obey the laws of thermodynamics
The laws of nature are a set of rules that govern the natural world and all the phenomena within it. These laws are absolute and no known phenomena can violate them. The laws of nature are distinct from scientific laws, which are considered to be scientists' attempts to understand and approximate the laws of nature.
The laws of thermodynamics are a set of principles that govern the chemical processes (metabolism) in all biological organisms. All living organisms obey the laws of thermodynamics.
The First Law of Thermodynamics, also known as the law of conservation of energy, states that energy can neither be created nor destroyed. In a closed system, such as the universe, energy is transformed from one form to another but remains constant. This law applies to all biological organisms, which require energy to survive. For example, during photosynthesis, plants absorb light energy from the sun and convert it into chemical energy stored in the form of glucose. This energy is then released through cellular respiration, allowing plants and animals to access it.
The Second Law of Thermodynamics states that when energy is transferred, there will be less energy available at the end of the process than at the beginning due to entropy. Entropy is the measure of disorder in a closed system, and it increases as energy is transferred. Living organisms are not closed systems, and they maintain their highly ordered state by constantly taking in energy from external sources. This energy is used to overcome entropy, or the spontaneous breakdown of organization within cells and systems.
Living organisms follow the laws of thermodynamics to maintain their existence. They acquire energy from external sources, convert it into forms that can be utilized for growth and reproduction, and release waste products. These processes are governed by the laws of thermodynamics, which dictate the transformation and distribution of energy.
The laws of thermodynamics are fundamental to our understanding of life and the natural world. They provide a framework for comprehending the chemical and biological processes that occur in living organisms, and they highlight the role of energy in maintaining the ordered state of living systems.
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All living organisms consist of membrane-encased cells
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane is a structure based on a framework of fat-based molecules called phospholipids, which physically prevent water-loving, or hydrophilic, substances from entering or escaping the cell. The cell membrane is selectively permeable, allowing certain molecules to pass through.
The cell membrane also has proteins studded on it, which serve various functions. Some of these proteins act as gatekeepers, determining what substances can and cannot cross the membrane. Others function as markers, identifying the cell as part of the same organism or as foreign. Still, others work like fasteners, binding cells together so they can function as a unit. Yet other membrane proteins serve as communicators, sending and receiving signals from neighbouring cells and the environment.
Cells are categorised based on how their genetic material is packaged. If the DNA within a cell is not separated from the cytoplasm, then that cell is a prokaryote. All known prokaryotes, such as bacteria and archaea, are single cells. In contrast, if the DNA is partitioned off in its own membrane-bound room called the nucleus, then that cell is a eukaryote. Some eukaryotes, like amoebae, are free-living, single-celled entities. Other eukaryotic cells are part of multicellular organisms. For instance, all plants and animals are made of eukaryotic cells.
Cells are the smallest common denominator of life. They are the building blocks of all plants and animals, whether living on their own or as part of a multicellular organism.
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All living organisms arose in an evolutionary process
The laws of nature are distinct from scientific laws and natural laws. Scientific laws are attempts by scientists to approximate the laws of nature, while natural laws are invoked in legal or ethical theories. Within metaphysics, there are two competing theories of the laws of nature: the Regularity Theory and the Necessitarian Theory. The Regularity Theory holds that laws of nature are statements of the uniformities or regularities in the world, while the Necessitarian Theory states that laws of nature are the principles that govern the natural phenomena of the world.
The scientific theory of evolution by natural selection was conceived independently by Charles Darwin and Alfred Russel Wallace in the mid-19th century. In successive generations, members of a population are therefore more likely to be replaced by the offspring of parents with favourable characteristics for that environment. Evolution can occur if there is genetic variation within a population. Variation comes from mutations in the genome, reshuffling of genes through sexual reproduction, and migration between populations (gene flow).
The modern understanding of evolution began with the 1859 publication of Darwin's On the Origin of Species. In addition, Gregor Mendel's work with plants helped to explain the hereditary patterns of genetics. The modern evolutionary synthesis defines evolution as the change over time in this genetic variation. The frequency of one particular allele will become more or less prevalent relative to other forms of that gene.
The main ideas of evolution may be summarised as follows:
- Life forms reproduce and therefore have a tendency to become more numerous.
- Factors such as predation and competition work against the survival of individuals.
- Each offspring differs from their parent(s) in minor, random ways.
- If these differences are beneficial, the offspring is more likely to survive and reproduce.
- This makes it likely that more offspring in the next generation will have beneficial differences and fewer will have detrimental differences.
- These differences accumulate over generations, resulting in changes within the population.
- Over time, populations can split or branch off into new species.
- These processes, collectively known as evolution, are responsible for the many diverse life forms seen in the world.
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The laws of nature are immutable
The concept of immutable laws of nature is a topic of debate among philosophers, scientists, and scholars. While the specifics of what constitutes a law of nature vary, there is a general consensus that these laws are fundamental principles that govern the natural world. These laws are discovered through scientific observation and experimentation, rather than created or imposed. They describe regularities and patterns in nature, such as physical, chemical, and biological processes.
One perspective, known as the Regularity Theory, views laws of nature as mere descriptions of the uniformities or regularities observed in the world. In contrast, the Necessitarian Theory posits that laws of nature are the underlying principles that govern natural phenomena. This theory suggests that the natural world "obeys" these laws, implying a sense of necessity or obligation.
The immutability of the laws of nature can be understood through several key aspects:
- Universality: The laws of nature are universally valid, meaning they apply everywhere and at all times. They are not limited to specific locations or time periods.
- Simplicity: Laws of nature are often formulated in simple terms, even though their effects can be complex. For example, the law of gravity, which has far-reaching implications, can be expressed as a simple mathematical equation.
- Reproducibility: The laws of nature are reproducible, meaning that the same results can be obtained through repeated experiments or observations. This reproducibility allows for predictions and technological advancements.
- Falsifiability: Laws of nature are formulated in a way that makes them susceptible to falsification. If a single counterexample is found, the law is no longer universally valid.
- Applicability: The laws of nature are applicable to both living organisms and inanimate matter. They govern the behavior of all entities within the natural world, including human beings.
- Immutability over time: While it cannot be proven, there is no evidence to suggest that the laws of nature have changed over time. They are assumed to be constant, providing a foundation for understanding the natural world.
The immutability of the laws of nature has significant implications. It suggests that these laws are fundamental to the functioning of the universe and are not subject to human influence or alteration. Any changes or disruptions to the natural world are a result of human actions or other factors, rather than a change in the underlying laws themselves.
Furthermore, the concept of immutable laws of nature raises questions about their origin and their relationship to a possible divine creator. While some scholars attribute the laws of nature to a divine source, others view them as arising from the inherent structure and properties of the universe itself.
In conclusion, the idea of immutable laws of nature underscores the consistency and universality of the principles that govern the natural world. These laws provide a framework for understanding and predicting natural phenomena, and their immutability highlights their enduring nature across time and space.
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The laws of nature are universally valid
The laws of nature are based on experience and observation, and cannot be proven. They are identified and formulated through observation and are universally valid until a counterexample is found. They are also simple, and can be expressed in various ways, including mathematically.
The laws of nature are important because they provide us with a better understanding of natural phenomena and events, enable us to make predictions, and make technological development possible. They are also useful in determining whether an envisaged process is realizable or not.
The First Law of Biology states that all living organisms obey the laws of thermodynamics. The Second Law of Biology states that all living organisms consist of membrane-encased cells. The Third Law of Biology states that all living organisms arose in an evolutionary process.
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Frequently asked questions
The laws of nature are rules that govern the world around us. They are discovered through scientific observation and experimentation.
Yes, the laws of nature apply to both living and non-living things. For example, the first law of biology states that all living organisms obey the laws of thermodynamics.
Laws of nature are distinct from natural laws. Natural laws refer to a system of laws based on observations of natural order and human nature, from which certain values are derived.
Laws of nature are also distinct from scientific laws, which are considered by some researchers to be scientists' attempts to approximate the laws of nature.