Physics

I was watching a show one day and it accidentally changed to a show and some body fell when they were flying on a diagonal and they fell vertically. So I wanted to know if this was possible? And also can i get a diagram like the diagram below?

Just curious. It's an interesting topic.

Hello, is there any material or substance or combination of both that will keep warm for at least 30 minutes after absorbing it from external source? Must be able to use for public purpose, in reasonable costs, no toxic materials. Most materials I know from real life that are used can be heated, but the heat goes off pretty quickly. Thanks, Jan

As title suggested, is it possible?

Hello, I am prominently know as musical artist Digital Down. I have created an audio waveform based on Schumann’s resonance and it’s correlating partials. Many videos online use instruments to reproduce the notes of the partials rather than recreate the partials in a natural manner. I have used, in this particular example, integer oscillators to create what said sound would actually sound like. I have another version that will be released in the future that is less abrasive, using sine wave oscillators to reproduce the sound. In a controlled environment (flat frequency studio monitor, appropriate acoustics) the sound yields an uneasy feeling that some have stated to feel …

So now im in this debate if a 1 to 1ratio gearhead can give more strength and obviously it can how does this affect science? In cells it is believed that the center gives the most strength when if we understood how strength is being sent we could understand how to make stronger cells using cells of lesser strength on the outside and not in the center then the nucleus could be any cell It would help a lot of fields but I am still in a debate if a 1 to 1 ratio can give strength I had 2 companies agree one said You could accomplish that by using different motor bodies another company said In order to get the same speed …

For example, is it possible that time moved slower in the past, and therefore the predicted age of the Earth is actually greater than ~4.5 billion years. Or perhaps the speed of light was different, which would mean things like the distance of stars from our planet are not what they may seem. I've so far encountered no evidence to suggest this, but would just like to open a discussion on it. My background is in Biology so forgive my naïveté in the matter.

I am promoting discussion about the question What is a uncertainty in Science? Uncertainty is definitely linked to probability. Probability is a definite number (one number) between 0 and 1 So it is tempting to think that if the probability is p then the uncertainty can be defined as (1-p), but this doesn't really work. Consider a cubical shaped object. What is the uncertainty of position when I place it along a line? Let my cube be a model of my car and of side L. Now the UK rules for parking said car state that if any part of the car is on a yellow line it is illegally parked and I could be subject to a fine (or worse). So what is the al…

What is the difference between (same wavelenght) LED light and a laser light exiting a diverging lens ?

if everything is information, the randomness of radioactive decay could be explained by the mechanism of description of individual atoms. If every atom is a specific algorithm set, consisting of strings of numbers at it's most fundamental level, perhaps the algorithm contains largely similar number sets, with small variations, like junk DNA in living cells. One or two variations in a cell's DNA might have no significant bearing on the identity or functioning of a particular cell. Similarly, small variations in protons and neutrons mathematical makeup might cause the randomness of certain radioactive decays...yet have them remain as functioning particles in normal relation…

I was reading the replies to a thread on another site: https://www.physicsforums.com/threads/is-frame-dragging-the-same-as-torsion.644506/ One posters states that torsion vanishes from Riemann geometry and general relativity ''by construction.'' This is still a common myth, even by experienced posters online. Torsion does not ''vanish'' in spacetime as some intrinsic part of relativity, in fact, such a statement has no empirical support. https://arxiv.org/abs/1604.00067 It has been noted by some authors, that general relativity without torsion is actually, the most boring kind of model you can work with.The torsion is of cou…

In a spinning torus a reasonable imitation of gravity can be produced, even though from the outside is is obviously not flat but curved. But... What if you spun a cube? Even though the sides are flat from an outside observer would an interior observer feel like he was walking up hill and down as he progressed around the inside of the spinning cube?

This is something I have been building on for about 3 years or so now, originally as a part of a proof for a solution to the Navier-Stokes Equations and Smoothness problem; to give a simple summary, deflections between ray instances in wave fronts must fall into a specific category based on ray-to-ray angle for a ray deflection instance, simply assuming 3-dimensional Euclidean space with time, and would include (and from what I understand, can only include): Front to Front Wave Deflection Instances: - Shared Linear Trajectory Infinitesimal Wave Front Section - Acute - Obtuse - Near Shared Angle Infinitesimal Ray Pair - Acute Ray Deflection Of…

does anyone have any idea what this is cause i would really like to know

I just recently finished reading the last Eragon book, Inheritance, which I highly recommend everyone read, because it's awesome. Anyway, an interesting thing in the book was a sword made of diamond that was sosharp that it could cut through virtually anything. it was described as being 'the archetype of an inclined plane'. What exactly that means, I'm not sure, but I'm guessing it means that the thinnest point on the edge of the blade is only one carbon atom thick, and gets progressively thicker to form a perfect slant right down to the atomic level. Now, obviously there is no way we could (or would) make such a blade with current technology, but I couldn't help but …

The following statement was offered in a recent thread as justification for a point. As this was not really germane to the thread and I can't find it anyway since the forum upgrade, I thought it woudl make a good discussion subject. Well I take'Nature' to mean the real world, both theoretical and observable and I respond "Science sees Nature as rife with discontinuities. In fact so much so that many Sciences have coined specific (often quite colourful) words for their discontinuities." So in Earth Sciences (Geology, Paleontology etc) we have Unconformity Fault (many sub types) Extinction In (Fluid) Mechanics we have The Hydraulic jump …

In an electric motor, it is important to detect a short circuit fault in one of the windings in its early stage. But, would it be possible to predict the moment in which an insulation failure may happen between adjacent turns in one of the windings ? In my opinion, if we have a collection of sufficient data, representing the functioning conditions of a motor during a month, it is possible to predict its life time, or in other words, the time interval in which it my undergo an insulation failure. What are your opinions ?

Classical physics predicts weight (W) should NOT change at increasing temperature (T) in vacuum. Relativistic physics predicts W should INCREASE at increasing T in vacuum. My theory predicts W should DECREASE at increasing T in vacuum and can be found here yaniv-stern.webnode.com. W reduction at increasing T in vacuum disproves conservation of mass and most of the rest of #physics. Over the past ten years I contacted thousands of scientists to weigh a heated metal in vacuum and publish the results. I did Not get the results of the experiment. #ResultsRequired

Is there a device (electronic/mechanical or otherwise) that can actually convert potential energy to kinetic energy? And I mean, one that carry out such conversion as efficiently as a battery converts chemical energy to electrical energy. And I'm not referring to natural conversion like what happens in a spring when it is stretched and released (stored potential energy becoming kinetic energy and all) I'm referring to man made conversion of potential energy to kinetic energy so...any ideas? Or do such devices exist already?

I have question regarding moles conversion. What are the mole conversion formulas involving grams & formula units?

Hello Members, It's a pleasure to join your forum. I have a spring calc I'd like to present for consideration. Hooke's Law spring parameters: Load on Springs: 242.25 MT Load Axis: linear, horizontal Number of Springs: 2 Spring.A Position: left end of linear shaft Spring.B Position: right end of linear shaft Spring Stroke: 1.755 m Spring(s) Equilibrium Point: 0.8775 m Stroke/Cycle Frequency: 1.0 sec Task: Solve for spring geometry Thank you in advance

Cannot find even a picture of it. It is a fountain enclosed inside a clear plastic cylinder, about 10cm diam x 20 cm high, with a blue dyed fluid in it. After 'charging it' upside-down, when placed upright, a centered nozzle squirted upright, a stream as a fountain, with a duration of a few minutes. I think I bought it from 'Edmund Scientific' mid seventies. Anyone knows the name of it ?

I plan to major in physics next semester, but I want to get a head start. I was wondering if anyone could tell me the best way to go about teaching physics to myself from the ground up; perhaps a suggestion of the best physics textbook(s), video lessons, full courses, etc. (I tried looking at the MIT free courses on youtube but they seemed to use notations that the classes I plan to take will not use, and it seemed like they bounced all over the place. I also would prefer not to use Khan Academy because the material provided is extremely limited (only 1-3 10min videos on a single subject then onto the next subject. I need in-depth explanations and many examples). Tha…

Hi, I'm back after a lot of days...... Just came back with a thought... Suppose there is a block of mass m that has compressed a light ideal spring having spring constant k. Now, if we write the equation of motion for this system, then ma=-kx or a=-kx/m It's evident that a is a function of x. So we can differentiate it wrt x to gt the jerk j. So, j=-kv/m. But v is variable and still differentiable. And continuing it, we have an endless chain. So is it infinitely differentiable??

Like the Daemon, I was getting bored with all the politics threads and this thread was inspired by a question elsewhere where the poster had trouble understanding the difference between the statistics of geometric configurations and the statistics of energy levels as applied to entropy. So I re-tasked the Daemon as follows. Consider a rarified gas and let the Daemon take an empty box with a moveable side and capture a single molecule inside the box, so there is nothing else in the box. The molecule bounces about inside the box as expected. Question 1) Is the entropy any difference when the molecule is on the left hand side of the box, the right ha…