What is Nature: Definition and 728 Discussions

Nature, in the broadest sense, is the natural, physical, material world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena.The word nature is borrowed from the Old French nature and is derived from the Latin word natura, or "essential qualities, innate disposition", and in ancient times, literally meant "birth". In ancient philosophy, natura is mostly used as the Latin translation of the Greek word physis (φύσις), which originally related to the intrinsic characteristics that plants, animals, and other features of the world develop of their own accord.
The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by pre-Socratic philosophers (though this word had a dynamic dimension then, especially for Heraclitus), and has steadily gained currency ever since. During the advent of modern scientific method in the last several centuries, nature became the passive reality, organized and moved by divine laws. With the Industrial revolution, nature increasingly became seen as the part of reality deprived from intentional intervention: it was hence considered as sacred by some traditions (Rousseau, American transcendentalism) or a mere decorum for divine providence or human history (Hegel, Marx). However, a vitalist vision of nature, closer to the presocratic one, got reborn at the same time, especially after Charles Darwin.Within the various uses of the word today, "nature" often refers to geology and wildlife. Nature can refer to the general realm of living plants and animals, and in some cases to the processes associated with inanimate objects—the way that particular types of things exist and change of their own accord, such as the weather and geology of the Earth. It is often taken to mean the "natural environment" or wilderness—wild animals, rocks, forest, and in general those things that have not been substantially altered by human intervention, or which persist despite human intervention. For example, manufactured objects and human interaction generally are not considered part of nature, unless qualified as, for example, "human nature" or "the whole of nature". This more traditional concept of natural things that can still be found today implies a distinction between the natural and the artificial, with the artificial being understood as that which has been brought into being by a human consciousness or a human mind. Depending on the particular context, the term "natural" might also be distinguished from the unnatural or the supernatural.

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  1. petrushkagoogol

    A Nature of radiation emanating from a body v/s frequency

    Does the nature of radiation emitted by dense bodies like black holes differ in frequency from radiation emitted by regular stars like our Sun ? I believe that the former radiates more x-rays and high frequencies rather than the latter which radiates mainly uv, visible and infrared ranges. Is...
  2. B

    I Exploring the 3D Nature of Black Holes

    So having considered the classical depiction of a black hole resembling a whirlpool, my thought process is that a black hole must be a 3-d phenomenon. Therefore I can not see how a event horizon/swirlpool model could be plausible unless the centre of a black hole was spinning and literally was...
  3. Tollendal

    A Negative Absolute Temperature: Defying Gravity?

    Dr. Achim Rosch, a theoretical physicist at the University of Cologne in Germany, who proposed the technique used by Dr. Ulrich Schneider and his team to create in laboratory negative absolute temperature, have calculated that whereas clouds of atoms would normally be pulled downwards by...
  4. S

    Does nature favour cool computations? News from SFI

    Hi everyone. I'm not sure if this should fall under Biology and Medical, or under some other science category, but I found the following news link from the Santa Fe Institute (SFI) website, about analysis by physicist and complex systems researcher David Wolpert, which suggest that imprecise...
  5. wolram

    Harnessing the shared wave nature of light and matter

    https://www.sciencedaily.com/releases/2016/06/160613144700.htm Harnessing the shared wave nature of light and matter, researchers have used light to explore some of the most intriguing questions in the quantum mechanics of materials. Just for discussion..
  6. Behrouz

    Exploring the Nature of Charge in Electrons and Protons

    Is it right to say that 'modern physics has no deep explanation of the nature of charge' in electrons and protons?
  7. Neha98

    Verify particle nature of electron using blackbody radiation

    It's mentioned in my book that blackbody radiation can verify the particle nature of electron could anyone explain this to me,please?
  8. D

    A Does true randomness exist in nature?

    Does randomness exist in nature? We say every event must abide by the laws of nature, including QM probability/uncertainty. QM says outcomes are uncertain. Does uncertainty imply both randomness and probability? It seems that randomness is superfluous to the uncertainty principle, and it makes...
  9. entropy1

    B Nature of collapse / does collapse exist?

    I learned that the moment a wavefunction collapse takes place is a matter of interpretation. So, I suppose the phenomenon 'wavefuntion collapse' is something that has to be witnessed by observation at some point to be able to establish it at all! So my question is: if collapse doesn't actually...
  10. Swapnil Das

    B Question about the nature of Gravitation

    Hello. Modern Physics explains Gravitation in two general ways: In accordance to the General Theory of Relativity, Gravitation is thought of as an effect of the curvature of space-time continuum. This results in the formation of the recently and famously detected Gravitational Waves. Quantum...
  11. Jim Lundquist

    Thought Experiment on the Dual Nature of EM Radiation

    The following question/thought experiment is based on the dual nature (particle/wave) of electromagnetic radiation. Consider the emisson of a single photon on a 3D grid along the x-axis with its origin at (0,0,0). The only matter in this experiment consists of “electrons” found only in...
  12. Inspiron

    Confusion about nature of collision

    I have a problem with understanding the nature of collisions and their outcomes. From my understanding, I come to think that when a mass collides with another, both of them should always have equal velocities post-collision. For example, when a mass moving at v1, m1, collides with a mass at...
  13. davidbenari

    I Understanding 4-Momentum in General Relativity

    Conserved quantities in GR deal with ##p_\mu## not ##p^\mu## and while in Minkowski spacetime its easy to see what each of the components mean (since the metric is so simple) in general relativity I think its not and its starting to confuse me. Why exactly is ##-p_0## the energy in general...
  14. S

    B Understanding the Cosmic Microwave Background

    When a "layman" hears of the cosmic microwave background, and this layman also has a passing knowledge of big bang theory, it can be difficult for said layman to wrap his head around what the CMB really is. That layman might ask, wouldn't this primordial radiation have "passed" us by now, and...
  15. K

    I Exploring the Nature of Time: Is it Just a Measurement?

    I'm wondering if time is just a way we have to "measure" how things change its characteristics in space. Is that correct?
  16. Peter99

    I Wave-particle duality: nature of wave-particle as it travels

    Hi, I'm trying to conceptualize the life of a particle as it travels through free space. I wish to start simple and then build from there. Speaking about the wave-particle duality that we observe in fundamental particles. Let's start with electromagnetic radiation (then move on to...
  17. entropy1

    B Number of entangled particles in nature

    I understand that we can create entangled particles in the lab. But how many (non-locally) entangled particles (such as photons/polarisation or electrons/spin) exist in free nature?
  18. debajyoti datta

    Is Electric Current a Scalar, Vector, or Constrained Vector?

    what is electric current...a scaler or vector?? ...well I personally believe that it is somewhere in between the two extremes (what is not 0,need not be an 1 either :oldbiggrin: ) ...particularly because of the strange similarity we see in vector addition and phasor addition)...some people...
  19. S

    I Original direction of force versus vector components

    What happens to a mechanical force's real original direction i.e. when we divide it into components of basis vectors, which in turn change as per problem at hand (like gravity components at inclined plane ), how we arrive at correct physics by taking two/three arbitrary directions of our choice...
  20. G

    I Learn About Tensors: Simple Explanations & Examples

    Dear Friends! I am learning Tensors so my question may look simple to you. "All observers in all reference frames agree not on the basis vectors not on the components but on the combination of components and basis vectors" Q Why this happens? Please guide me where I can study it in brief and in...
  21. N

    Need help with the 4 fundamental forces of Nature

    Hey everyone, I am currently in the middle of research for a science fiction /fantasy novel where the magic system is based on the ability of a group of people to manipulate the four fundamental forces of physics. Of these four, coming up with ways that individuals could manipulate gravity and...
  22. R

    What's the nature of a force acting on this gas? (Thermo)

    Homework Statement A gas in equilibrium has distribution function: f(p,r) = C0*(1+y*x)(2*pi*m*k*T)-3/2*exp(-p2/(2*m*k*T)) where x is the distance along an axis with fixed origin, and y is a constant. What's the nature of the force acting on this gas? Homework Equations Maxwell bolztmann...
  23. G

    Gravitational Waves vs Tidal Effects: Exploring Nature & Inflation

    My simple description of gravitational waves is that they are due to the relativistic principle of locality, i.e. the fact that the action of gravity is not instantaneous, something that you can’t see from the tidal effects in Newtonian physics. Is it correct? I've also found a comment...
  24. J

    MHB Nature of real valued function f(x)

    If $f(x)$ is a differentiable real valued function satisfying $f''(x)-3f'(x)>3\;\forall x \geq 0$and $f'''(x)>0\;\forall x\geq 0$ and $f'(0)=-1\;,$ Then $f(x)+x\;\forall x>0$ is $\bf{Options}:$ $(a)\;$ decreasing function $(b)\;$ Increasing function $(b)\;$ Constant function $(d)\;\;$...
  25. Planobilly

    Are all new ideas evolutionary in their nature?

    My question is about how new ideas come into being. Are all new ideas based on some form of predictive analysis or can they arrive without direct connection to other known events? This is a bit of a hard question for me to get across...lol For example, I know the values of events A, B, C...
  26. durant35

    Photon Wave Nature: Exploring Vision in Quantum Terms

    I red that photon has wave properties so it can go through both slits simultaneously in the double slit experimen. What about photons that hit our eyes and construct our vision? How do we know which path they traveled and what they reflected, or to say it better how would you describe the...
  27. G

    Why QM (or rather, nature) is weird, in lay terms.

    If I show you three face down cards (normal playing cards, so can be either a red or black suit), and tell you that no matter which two you pick, they would be different colors, I have no doubt you'll say I'm being weird (to put it mildly). Well, nature does pretty much the same thing. This is...
  28. S

    MHB Solving the nature of intersection between 3 planes

    Stuck on the last 3 systems on my worksheet, if someone could give me more than just the answer but also teach me how, it would be much appreciated! "Determine the nature of the intersection if it exists) between the following sets of planes. If it is a line, find the equation of it. If it is a...
  29. T

    E=mc^2 how you picture it in nature?

    When you close your eyes and visualize E=mc2 in nature without math, what images do you see? I always saw the Hiroshima mushroom cloud, but after reading your posts, I agree bombs are not the right image when introducing concept to kids. 1. I now see star core nuclear fusion of hydrogen into...
  30. G

    Gravitational Waves & Multidimensional Spacetime: Experiments & Detection

    So I saw that claims are being made that LIGO may have detected gravitational waves. http://www.nature.com/news/has-giant-ligo-experiment-seen-gravitational-waves-1.18449 My question is, if the universe were in fact multidimensional as string theory predicts, would gravitational waves propagate...
  31. Islam Hassan

    Elementary Particles: Wave-Like Nature vs Travelling in Wave

    When we say that elementary particles are wave-like in nature does that encompass, lead to and necessarily imply the fact that they travel in wave-like trajectories or is wave-like displacement a separate, distinct notion from their wave-like intrinsic natures? IH
  32. D

    I am unsure as to the nature of the potential

    Homework Statement A particle with mass m and electric charge e is confined to move in one dimension along the x -axis. It experiences the following potential: ##V(x) = {\infty}## for ## x{\lt0}## ##V(x) = -e^2/4\pi\epsilon_0x## for ## x \geq 0 ## (Note: the way the question is written down...
  33. S

    Unphysical nature of ##\phi^{3}## interaction

    In page 77 of Peskin and Schroeder, it's mentioned that for a ##\phi^{3}## interaction, the energy is not positive-definite unless we add a higher even power of ##\phi##. Can someone please prove this statement?
  34. AlexGLSY

    Exploring the Probabilistic Nature of Quantum Mechanics

    Why is Quantum mechanics probabilistic? what prevents it from being deterministic, like classical mechanics ?(is it the lack of information about the processes and the forces applied at this scale?)
  35. S

    Microwave-to-optical conversion (A Nature paper)

    Hello everyone I recently read a publication (attached) in Nature which talks about microwave-to-optical conversion. The setup consists of resonator depicted by a circle. It is mentioned that this resonator has non-linear electromagnetic response. Up-conversion takes place by three-wave mixing...
  36. preitiey

    Why is gravitational force always attractive in nature?

    why is gravitational force always attractive in nature?
  37. entropy1

    Multiple universes, measurement and laws of nature

    Considering the multiple universe view, if a measurement (or something else) makes visible which universe we are in, is it then also possible we find ourselves in one with (slightly) different laws of nature?
  38. ghaleb hamdan

    Does Pair Production proving quantum nature?

    Hi I have started studying Quantum Mechanics on my own and I had a question that I am stuck on. I apologize if it's too basic or if someone else asked it I understand what Pair Production is, but the source I am learning it from is saying that Pair production, is another way to prove the Quantum...
  39. Polaris417

    Exploring the Nature of Energy: Particle or Wave?

    Is it a particle, or not? My Chemistry teacher has been saying both and I am not sure which it is. Sometimes he says that energy is a particle, while sometimes, it is just a wave moving through particles. Thanks very much.
  40. O

    Question on conservative and non-conservative nature of electric fields.

    Hi all :) I am about to finish the chapter of electromagnetic induction in my class. And I taught my students that the electric field induced due to changing magnetic flux is different that the electrostatic field due to stationary charges(Now I am wondering would it be wrong if I used the...
  41. T

    Total mass-energy v nature of forces, particles

    What does the standard model have to say about the relationship between the total mass-energy of the universe and the characteristics of forces and force-carrier particles? That is, if the total mass-energy were different, would the nature, strength, … of the forces and force-carrier particles...
  42. E

    Electromagnetic nature of light

    I was recently taught in school about the propagation of light as a combination of changing electric and magnetic fields. I had read somewhere that a magnetic field was basically an electric field in a moving frame of reference. So,I wanted to know if in some frame the propagation of light could...
  43. H

    Calculating Frequencies of Speakers using Interference Patterns

    Homework Statement A student enters Best Buy prepared to buy a pair of speakers. Before he does so, he conducts an experiment with them. He places the speakers4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and...
  44. ion santra

    What is the Nature of Singularity in the Function f(x)=exp(-1/z)?

    what is the nature of singularity of the function f(x)=exp(-1/z) where z is a complex number? now i arrive at two different results by progressing in two different ways. 1) if we expand the series f(z)=1-1/z+1/2!(z^2)-... then i can say that z=0 is an essential singularity. 2) now again if i...
  45. A AM ARYA

    Nature & speed of electricity

    1.Is electric current a microscopic or macroscopic quantity?I think it is macroscopic as we can feel it,but when I asked my friend he said it is microscopic as it deals with electrons.I'm a bit confused... 2.What is the speed of electricity?Is it equal to the drift velocity of electrons or the...
  46. Stephanus

    Twins Paradox: Nature Cheats but B Gets Fooled

    Dear PF Forum, After all these post'. I want to know that my understanding of twins paradox is close enough. So, Green travels, Blue stays. Blue keeps sending signal, Green bounces the signal. Doppler factor = 1/4, so ##\frac{1}{4} = \frac{1-v}{1+v}; v = 0.6## And at event T0 (from B), Green...
  47. K

    Why the chemical elements are found together in nature

    I've often wondered, but have never found a solid explanation for, why the chemical elements are found together in nature? Why aren't atoms all in a somewhat homogenous mix? Why are X atoms found with other X atoms? And why are isotopes found together, such as Uranium 235 and the far more...
  48. hellsteiger

    What is the accepted interpretation of the quantum nature of matter?

    I'm having difficulty gauging what the accepted interpretation of the quantum nature of matter is. On the one hand I have been taught that properties of a particle are always definite, but due to the quantum nature of existence we cannot measure several properties to 100% accuracy at once. On...
  49. S

    Nature of Geodesic: Determine Without Knowing Metric?

    Hello! Please help: A world line is given to us. It is known that it is a geodesic. The metric, however, is not known. Since we don't know the metric, it should not be possible to tell whether the geodesic is spacelike/timelike/null (Right?) But since the geodesic is known (x,y,z,t), we can find...
  50. S

    Proving the adjoint nature of operators using Hermiticity

    How can the fact that ##\hat x## and ##\hat p## are Hermitian be used to prove that ##\hat x - \frac{i}{m \omega} \hat p## and ##\hat x + \frac{i}{m \omega} \hat p## are adjoints of each other?
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