What is Idea: Definition and 833 Discussions

In common usage and in philosophy, ideas are abstract concepts. Also in philosophy, ideas can also be mental representational images of some object. Many philosophers have considered ideas to be a fundamental ontological category of being. The capacity to create and understand the meaning of ideas is considered to be an essential and defining feature of human beings. In a popular sense, an idea arises in a reflexive, spontaneous manner, even without thinking or serious reflection, for example, when we talk about the idea of a person or a place. A new or an original idea can often lead to innovation.

View More On Wikipedia.org
  1. Uncanny3

    'Subducing head': pneumatic engine idea

    Hi, I want to share my thought on what I have called a 'subducing head', it's a pneumatic engine. Here's the first drawing==> The concept is to apply more pressure on one side of a shape within an air compression chamber. So the red squares are areas of pressure, which don't occur on the other...
  2. K

    History - Evolution of ideas in the field of thermodynamics (statistics in mechanical and gas dynamics)

    Hi, I have a question regarding the evolution of idea in the field of thermodynamics. Boltzmann is genereally credited with the notion of stasticis and it's relation to entropy. However, Boltzmann was inspired by the work of Maxwell (who himself followed the conceptual models of Bernoullli for...
  3. LenaWenaKena

    I'm interested in physics but have no idea what path to take (14 years old)

    How did you find PF?: Google Search I'm new to this forum and I am currently 14 years old. I've recently taken an interest in physics(Due to popular science/ books and natural curiosity). But I have no idea what path to take so I could study it. I come from a poor and quite unsupportive family...
  4. hagopbul

    An idea to improve kidney function

    Hello All : as i read about solid state physics , reading about crystals and structures , is it possible to create PZE electrodes and put them on kidney to create some vibrations patterns to help in filtration of blood reducing the need to kidney dialyses , as kidney problem is filtration...
  5. Ahmed1029

    Should I submit an outlandish physics idea that feels right?

    I'm curious to get people's opinions about whether this is interesting enough to write up for submission. I arrived at a set of coordinate transformations that are different from the Lorentz transformations, but which produce a coherent mechanical framework. It gives a very beautiful physical...
  6. U

    B Where am I wrong in this travelling faster than light Idea I've had?

    Dear Anyone. Please be nice and let me down gently, I know more about tapdancing than physics and I can't tapdance! It's just... Kept reading nothing could go faster than light, in a vacuum (space.) So I Googled 'why' and discovered it's because things get heavier and heavier as they get...
  7. T

    I Curious about an idea of a modified polariser to send signals with QE

    So I'm curious about an idea of using a specially modified polariser to send signals with quantum entanglement, curious to know what's more there is to learn about the idea, for better or worse, its possibilities or impossibilities. Ok so like in the Bell tests, measuring the spin of an...
  8. H

    Can a Vertical Jet Engine Replace Helicopter Blades for Hovering Crafts?

    Summary: Have a hovering craft powered by a jet engine. Instead of helicopter blades have a vertical jet engine embedded in the craft. Steer via thrust vectoring. The angular momentum of the jet engine might not provide enough stability but surely there is some way to get that.
  9. pdorton89

    Need Help with Heat Exchange Calculations for Cosplay Suit Idea

    Hello, I am trying to figure out if the investment into a watercooling system in a Cosplay suit would be worth it. I plan on using a water loop made by taking a "CoolShirt" https://coolshirt.com/product/white-coolwater-shirt/ and running water through it either from an ice bath in a sealed...
  10. C

    Book on how to define ideas rigorously

    I know the logic of proving/disproving mathematical statements, I learned it by reading books, texts regarding to the matter, lots of exercises ( in the subject of how to do mathematical proofs and in the subject of proving/disproving statements in my math courses [ e.g. Linear Algebra, Real...
  11. Wrichik Basu

    Courses Is skipping a semester a terrible idea in academia?

    I am currently in the sixth and final semester of my undergraduate degree in Physics. Some people here are probably aware that my father has been fighting cancer since June 2021. Unfortunately, I lost him yesterday (not to cancer, but to pneumonia). He was admitted in hospital for more than...
  12. G

    Is it a good idea to connect concepts through dependency relations?

    When I learn a concept, I often find that to understand it, I have to learn some other concepts and I don't know if they also require learning new concepts. During this procedure, I find learning frustrating, as the teacher always presume that I should have learned them. So I think I can build...
  13. Buzz Bloom

    I An idea for calculating the probability that the Universe is flat

    References (1) https://www.physicsforums.com/threads/what-is-the-probability-that-the-universe-is-absolutely-flat.971984/ (2) https://www.physicsforums.com/threads/calculating-the-probability-that-the-universe-is-finite.1011826/ Suppose the Friedmann equation is used to analyze two models. (1)...
  14. L

    B Quantum Entanglement information transmission idea to knock down....

    I work in IT and am a layman in the quantum world. I have obviously misunderstood something in my amateur reading of quantum, but if someone could explain my mistake in the above scenario it might be very insightful for me! Forgive me if the terminology is not correct - or if indeed lay folks'...
  15. kyphysics

    Does the Idea of the Metaverse Appeal To You?

    Unless you've been living in a cave, you likely know Facebook changed its name to Meta (for metaverse) and there has been ubiquitous discussion of the concept of the metaverse from technological to social/cultural perspectives in recent months. Bill Gates, for example, has said he thinks most...
  16. speedythespeed

    B Oberth effect on a slope - experiment idea

    I'm just curious if something like the Oberth effect on a slope is doable as an experiment. I have a picture of my idea of what to do just looking for some opinions.
  17. D

    I A New Idea for the Origin of Earth's Water

    I will begin with the concept that the Moon was originally a rocky terrestrial planet that orbited at roughly one AU from the Sun and lost the majority of its lighter volatiles including water during the T-Tauri phase of the Sun's transition into a Main-Sequence yellow dwarf star. A similar...
  18. TylerSmith

    B Finding One-Way Speed of Light: Use One Clock

    First off, I'm probably totally incorrect on all of this, so feel free to correct me. Second, I'm only 15, so please just be gentle and helpful when I'm totally off. Now for my idea: Have a huge vacuum and put lasers on the inside with hundreds of different lasers at different angles equally...
  19. docnet

    When you have no idea how to work out a problem

    Homework Statement:: evaluate ##y=\frac{sin{x}}{\text{n}}## at ##n=3## and ##x=3## Relevant Equations:: ##y=\frac{sin{x}}{\text{n}}## ##y=\frac{sinx}{n}## ##y=\frac{si\cancel{n}x}{\cancel{n}}## ##y=six## ##y=6##
  20. S

    A Is the self-consistency principle a scientific or philosophical idea?

    As I understand it, the Novikov's principle is either philosophical or scientific. I heard that it is a consequence of the stationary-action principle (principle of least action) in quantum mechanics. Does this mean that Novikov's principle is scientific? I also heard the following: in quantum...
  21. N

    B Basic Idea of Differential Equations

    Hello. After a lot of researching, I am still not clear how the subject of differential equations is really any different from derivatives and integrals which are learned in the main part of calculus. For example: "Population growth of rabbits: N = the population of rabbits at any time t r=...
  22. Nick tringali

    I have no idea why this is an enantiomer

    I literally cannot conceptualize why this is an enantiomer. They are literally the exact same thing.
  23. nycmathguy

    MHB What is the Basic Idea of Limits in Calculus?

    Hello everyone. How are you? I want to learn calculus so badly. I plan to do a self-study through calculus l, ll, and lll. Before I think so far ahead, I need a clear, basic definition of the concept of a limit. Textbook language is never easy to grasp unless the student is gifted. I am not...
  24. DrTherapist

    Biology Is it a good idea to become ad-hoc prof for the money?

    Hello everyone. In my country, I am not sure with the latest regulation regarding compulsion of PhD for the post of associate professor in academia. Ultimately, I actually want to become a police officer, becoming a Police Sergeant will do. I am confident that I will finish my Bachelor's with a...
  25. MoistOxi

    NASA My rough idea on a near light drive

    Please add too this idea.
  26. B

    Is this an idea or a device? (fusion plasma confinement configuration)

    The idea itself is to create in a toroidal chamber a spiral-shaped plasma filament with a singularity in the form of a ring of rotating plasma, in which the concentration of ions and the duration of nuclear interaction increase during electrostatic compression. For this, it is proposed to wind a...
  27. U

    Need help with a sci-fi idea - photonic man

    Summary:: I want to create a superhero made of photonic molecules. I was wondering if anyone would give me some scientific pointers/advice. My premise is that a brilliant quantum computer scientist finds a way to create programmable photon molecules. Since he can program the molecules to have...
  28. DaveE

    The Unwise Idea of Wooden Satellites

    I can't even count how many reasons this is a stupid idea. But then, what do I know? https://gizmodo.com/japanese-researchers-are-making-wooden-satellites-becau-1845967973?fbclid=IwAR1Gf70ByB991GnkkDxSetcsgWyW8sJ81-JMHjl3_j65KKEh9kYry2-32Gs
  29. Monoxdifly

    MHB [ASK] Seemingly Simple Limit Question but I have no Idea

    If f(a) = 2, f'(a) = 1, g(a) = –1, and g'(a) = 2, the value of \lim_{x\to a}\frac{g(x)\cdot f(a)-g(a)\cdot f(x)}{x-a} is ... A. 1 B. 3 C. 5 D. 7 E. 9 \lim_{x\to a}\frac{g(x)\cdot f(a)-g(a)\cdot f(x)}{x-a}=\lim_{x\to a}\frac{2g(x)+f(x)}{x-a}. How to determine the f(x) and g(x)? And when to use...
  30. phinds

    US School Districts: Changing Grading System - Is It A Good Idea?

    The Week magazine Oct 30, 2020 page 8 To be fair, it's not quite as simple-minded as that makes it sound, but it is still, to me, is a terrible idea. Another progressive education idea that is well-meaning but likely to be disastrous in practice. Here's an article with more detail...
  31. joey13

    Could electricity power a rocket? Feedback appreciated!

    Hi! I'm a high school physics student. I really, really love physics, especially rocket science, and I had an idea about a rocket design, but I don't know how feasible it is. I was hoping you guys could give me some feedback. So I was learning about electricity, and as far as I know, electric...
  32. I

    Exploring Time and Dark Matter: A Non-Scientist's Guide to Proving an Idea

    If I have an idea I'd like to pursue but I don't have a STEM degree, where do I begin? It's an idea about time and dark matter. I've been thinking about writing it out as a popular science article but I'd rather get a little bit of data behind it first so I don't look like such an armchair...
  33. R

    B Why do we need a separate center of gravity idea when we have CoM?

    While deriving the formula for the position vector of the center of mass of a system of ##n## particles, we assume some external force ##\vec{F_i}## on each particle and internal forces ##\vec{f_{ij}}## between any two particles. In the derivation, we come to the conclusion that the position...
  34. F

    MHB Proof by induction? No Idea what I should do :(

    find the general rule and prove by induction 1 = 1 1 - 4 = -(1 + 2) 1 - 4 + 9 = 1 + 2 + 3 1 - 4 + 9 -16 = -(1 + 2 + 3 + 4) I created this so far, but don't know if I am even going the correct direction
  35. D

    MHB IHave no idea how to solve any os these.

    It is intended to collect samples from a Normal population with a standard deviation of 9. For a confidence level of 80%, determine the amplitude of the confidence interval for the population average in the case of a sample of size 81. Pick one:a. 1,28 b. 1,92 c. 1,44 d. 2,30 2) A sample of...
  36. jim mcnamara

    COVID Another idea on Covid-19 fatalities, Vitamin K serum levels

    Please read this first -- Popular link: https://www.theguardian.com/science/2020/jun/05/vitamin-k-could-help-fight-coronavirus-study-suggests It does not list the original paper. It seems to me to be...
  37. P

    Other I had an Idea that wasn't as impressive as I thought it was, Comments?

    While doing homework about a week ago, I had an idea to solve a problem that was arguably better than the conventional method. It involved a slightly different look at math objects, resulting in a much simpler calculation. As far as I know, I haven't seen any textbook or paper that uses this...
  38. J

    Perpetual Motion Idea: Is It Possible?

    Hi all,Minimal math/physics background here, so bare with me. Imagine a smooth track or tube that tightly spirals downwards into smaller and smaller circles. Now imagine if a ball rolls down that spiral, gaining speed. At the bottom/end of the spiral the track/tube goes underneath the spiral...
  39. A

    Mom's Bad Idea: Will Bleach Help Cat Pee Smell?

    So my cat peed on the towels(bu the smell not today) It stunk really bad, like ammonia. Then my mom said it will be fine and put them in the washing machine. As she added the bleach I said that would be a bad idea. How wrong is she?
  40. TateTheL

    Electromagnetic Induction -- Insane Idea

    Would you be able to transfer a "current" through rings of conductive and paramagnetic material? As in, have a current, which causes a magnetic field to pop up in the ring, which fluxes, and causes the next ring to have a current? I am curious because this is a research project for FLL. (There...
  41. L

    Questions for chatbots (entrepreneurial idea)

    Hi, I just made a chatbot. This is for one of my entrepreneurial ideas. I just need to know some good questions to make it ask before I deploy it. I already google searched questions for chatbots but I didn't get very good results. Thanks.
  42. S

    I Is Joon-Hwi Kim's idea of graphical notation for vector calc any good?

    Here is his paper. I don't see what the big deal about it is. https://arxiv.org/pdf/1911.00892.pdf
  43. bhobba

    Is Lowering School Starting Age To 3 A Good Idea

    Over in Scotland you can start prep school at 3 (even younger at some private schools). There is a bit of discussion out here in Aus, due to profiteering in day care centers and the belief it lays a better foundation, that the government lowers school starting age, like Scotland, to 3...
  44. berkeman

    Nice idea to make it easier to take autistic children to public events

    This is an interesting story. I have a couple of friends with kids who need to wear quieting earphones in most public situations, and this seems like a nice way to help families be able to broaden the events that they can attend together. It will be interesting to see if it catches on as a...
  45. S

    Help with a trailer unloader idea

    I have a trailer that is aproximately 12 feet by 5 feet wide. I would like to design a way to be able to unload 1 to 2 tons of gravel. (This is not a dump bed). I would also like to be able to unload 1 ton of hot asphalt. One idea is to make one of those hand crank unloaders that you can buy for...
  46. QuasarBoy543298

    I Problem with the idea of identical particles in QM

    assume i have a gass made from N identical particles in a box and i want to calculate the probability for k out of N particles to be in the left side of the box. the problem is ,that if we treat the N particles as identical , each state in which exacly k of the N particles are in the left side...
  47. hilbert2

    I Idea about single-point differentiability and continuity

    Many have probably seen an example of a function that is continuous at only one point, for example ##f:\mathbb{R}\rightarrow\mathbb{R}\hspace{5pt}:\hspace{5pt}f(x)=\left\{\begin{array}{cc}x, & \hspace{6pt}when\hspace{3pt}x\in\mathbb{Q} \\ -x, &...
  48. Jarvis323

    SciFi Idea: What do you think about very long lifespans?

    Assume you have effectively cracked immortality (or very long lifespans), have already solved all of the feasible interesting problems, and are now living million+ year lives. With nothing to challenge you, boredom and sense of purpose, should be the last unsolved problems right? So how do...
  49. A

    Engineering Approaching a company or career engineer with an idea

    This will probably sound like paranoia and silly but , what would be the best way to test an idea (simulate it virtually and model on a software or otherwise) in the case where I can't do it myself because I don't have the software and the capabilities to do so. I am thinking either getting in...