Physics

Explained - What is Scientific Chaos Theory? Many people think that Chaos Theory is about disorder and randomness. However, it is not literally about disorder in science. It is stranger than you might think. Then what exactly is Chaos Theory? Let's find out the real meaning of chaos and chaos theory in science. The word "chaos" means disorder. However, the scientific chaos theory is not about disorder as we use it in our daily lives. The Chaos Theory is about statistical disorder, which has nothing to do with the disorder of your room. It is similar to non-determinism in Quantum Mechanics. Statistical disorder is about predictability of (the future of)…

In other words what is the scale of Standard Metre Rule?

I have read that the slip of time happened many times with the different people. Is it true ? I think it is true but it may happen in high energy field which may disturb into cosmic energy.

Please help me with this matter. I have extacted 1liter of thanol from suger and yeast. I don't have access to alcoholmeter to know the purity of ethanol and its percentage. I know the weight of my ethanol which is 850 g for 1 liter. Is there any way that i can measure the ethanol percentage for the extracted ehanol? Many thanks for your help.

Hi, I have this understanding of the nature of SpaceTime, and I'm just wondering if this is already common knowledge. My understanding is this: Space and time are dualities of each other, so they will be opposite in every way. In their relationship, space is the multiplicity, that which is observable, and time is the singularity, the absence of observation. Now, The evenly balanced view of this duality would be that only one truly "exists". But since were are of an odd(3) number dimension, the observation of existence is an odd, uneven, asymmetrical balance; therefore that which wouldn't exist, does, just indirectly. We are of the multiplicity, th…

When a ball is thrown upward it becomes at rest at maximum height, at this it is not in equilibrium although it is at rest. It is not at equilibrium because force of gravity is acting on it? Still I cannot find good explanation from exam point of view.I also cannot find the figure/diagram.

Hello all. If a magnet is spun, moved, shaken while surrounded by a coil, the coil will generate a voltage that would flow as current if the coil has a closed circuit. If a magnet is moved inside mercury, the currents would be 'tridimensional', in the body of the conductive liquid, probably emphasized in a plane/direction depending on the plane of the magnet motion. Do I have it right to this point ? If the magnet moving inside the conductive mercury is a conductor itself, and in intimate contact with the currents flowing in the mercury, will the current share paths in and out of the fluid ? If the magnet moving in conductive fluid is covered with an…

What is the meaning behind multiplication in physics? Is multiplication in physics purely mathematical or there is a physical explanation to it? How do we explain the product for example, s=v.t? Is there any meaning behind this? For example, I can say that "Distance is defined as the product of velocity 'times' time"? But what does this even mean?

Hello everybody, First off, hope you're all doing well. I was wondering what is the weight of all the particles in the Earth's atmosphere?

Hey so im hearing this weird noises I think due to the fact iam malnutritioned and also have mental health issues. Basically what im hearing is vibrations in the air anyone knows how this is possible and how can you stop this. Basically what im trying to explain is like electricity which you can hear the heat from it that is what im hearing, also due to this fact im going crazy and my body is humming and my heart is racing and im having gastric issues this is an odd issue i cannot stop it is there any way to stop this as soon as possible, and also how can this be possible is it because someone forgot to turn of the electricity? Is there any way to reflect this back i real…

There are getting popularity great Couder's experiments about classical objects having wave-particle duality: oil droplets on vertically vibrating liquid surface - constantly creating periodic waves around - interaction with these waves allows to observe 'quantum effects':interference pattern in double-slit experiment, tunneling depending on practically random hidden parameters or orbit quatization condition - that particle has to 'find a resonance' with field perturbations it creates - after one orbit, its internal phase has to return to the initial state. It's difficult to find good intuition about these experiments from only static pictures - the first time I had occa…

Hello everyone, I wanted to discuss time travel in this thread. Suppose that in 2020, you travel back to 1970. You have traveled to 1970 fifty years after it has passed, so you are in a time that is 50 years after 1970. Suppose that in 2020 you travel to 2070. In that case, in an about an instant, 50 years has passed.

Greetings. This could be in biology, in physics, in other places. Please move as deserved. A proper musical sound is related to a frequency, sometimes called 'on pitch' or 'on tone' or 'tuned'. Do birds 'singing' have a discernible correspondence to the musical frequencies we refer as 'proper pitch' as in human-tuned musical instruments ? Certainly birds may sound melodious and sometimes pleasant, but do their 'musical' notes follow our or any definitions, logic, standards, spacing ? Is there a study if birds have/follow their own fixed scales ? If a species of bird emits an A4 440Hz note right on pitch; do other notes from the same bird obey to …

What is your view on string theory / M theory or extra dimension or many dimensions? From what I read the people that came up with this theory are trying to understand and deal with problems with gravity and quantum mechanics phenomenon. That if there was no quantum mechanics phenomenon or problem with gravity there would be no need for this theory. The quantum mechanics phenomenon are mostly dealing with the phenomenon of double slit experiment, the Schrödinger's cat and quantum tunneling.

https://www.youtube.com/watch?v=OQHJhUVJGeo&t=169s In this video, James did an experiment in which he shone a modulated high-powered blue light laser at the MEMS microphone of an iPhone. This created a buzzing noise. We attempted to recreate the experiment using He-Ne laser and green light laser. However, no sound was picked up by our phone. Could someone please explain how the phone being shone at was set up? What additional factors may impact of this experiment? If the result in the experiment was caused by photoelectric effect, then could it be that the frequency of our laser simply isn’t enough to trigger said effect. Working on a deadline for science fair. A…

Hello! I have a microscope with a magnification of 180. When I reduce the distance between the lens and the object of observation and increase the distance between the eyepiece and the lens, I get an optical magnification of the microscope 800. I can’t get any more, because the lens rests on the object. Please tell me why the optical magnification is increasing? I use Google translate. Sorry for the incorrect translation.

Time crystals first described by Frank Wilczek in 2012 have got a lot of attention, recent popular review: https://physicsworld.com/a/time-crystals-enter-the-real-world-of-condensed-matter/ If I properly understand, they would like a lowest energy state spontaneously self-organizing into a periodic process - and propose sophisticated e.g. solid state experiments, or ping-pong of Bose-Einstein condensate, which don't really seem to satisfy this defining requirement (?) But Louis De Broglie has already postulated in 1924 that with electron's mass there comes some ≈10^21 Hz intrinsic oscillation: E = mc^2 = hf = hbar ω, obtained if using E=mc^2 rest mass energy in …

Hello, I'm sure many of you have seen examples of a DIY electromagnet, such as wrapping copper wire around a nail or bolt and hooking the ends to a battery. I have 3 questions about this. 1. What material, or metal, must be used for the object? In the examples of nails and bolts, are they steel? Iron? What characteristic must be true about that object? (ferro-magnetic? or whatever?) 2. If you had a plate of some kind, like an oven pan (something 1/4" deep or more) and wrapped the copper wire around it, could you make a plate or pan magnetic? It doesn't HAVE to be a nail or bolt, right? I think it'd be cool to make an electromagnetic surface or plate of some…

i have this radiator, when i clap or scream the metallic rims start vibrating and transmit sound in metal. Why?

Hello all. Distance from earth to moon is 384,000 kilometres. Time light takes to travel that distance = over 1 second. 1 second of time is discernible. A space probe travelling to somewhere happens to be at a location with visual of both earth and moon. If a laser beam is directed from the earth towards the moon during 1 second, an observer at the probe with visual of both the earth and moon should see the 'rod' of light advancing between earth and moon during 1 second, or will appear instantaneous ?

So my post was closed before I can respond to your comment Good question, do you mean if Betelgeuse's next peak in brightness will be as bright as previously recorded peaks? I do not yet have an opinion: I made a plot from Betelgeuse brightness data from 1997. From that we see that the maximum brightness in each cycle does not deviate very much. So given the lifespan of stars and the rather consistent behaviour in the data I've available I have no reason to predict that anything special is happening in the next cycle. But note that the last minimum deviates a little and that we at this time we are near the minimum brightness, It has just recently been suggested …

Just cam across this article that the fine structure constant is different and is changing all over the universe https://www.google.ca/amp/s/dailygalaxy.com/2020/02/a-quirk-in-the-cosmos-alpha-factor-has-profound-implications-for-physics-and-life-weekend-feature/amp/ they talk about different alphas depending where you look

Does anyone have any current updates on Betelgeuse? i notice different articles say different things some say dimming stopped, some say still going and some say it seems to be a little brighter? https://www.forbes.com/sites/brucedorminey/2020/02/17/betelgeuse-has-finally-stopped-dimming-says-astronomer/#397113b67945 The star has been nearly steady in brightness now over the last 10 days,” said Guinan. We could be at minimum brightness now and very soon the star will slowly brighten if it follows its normal 420 to 430 period of pulsation, says Guinan. Or when the star periodically changes its brightness, he says. These periodicities are seen in ob…

Usually drinking water fountains are pathetic things and quite unappealing. Assuming that the fountain could be guaranteed to be clean (members only) people wouldn't be so afraid to use one. However, to make it more appealing, rather than a little winkle of a squirt, I think that the visual appeal of crystal clear Laminar flowing water would be a big step in disarming people's fears. However, the entire flow must be in a single direction to achieve this and I should imagine that such a sensitive area as the mouth wouldn't appreciate the full force of the water hitting it directly. However, if more spacial in design, such as with a spherical / mushroom shape, then the…

If I have a very big waterproof safe and I filled it with water and locked it, then froze it to say minus 200 would the water freeze ? Do you need air to freeze water to ice?