Physics

Hello I have an idea for a substance seperator or fusion reactor. Here is one example for my idea... We study the radiation pressure on cometary dust over a wide size range in order to discuss the properties of particles in cometary dust trails and meteor streams. https://www.sciencedirect.com/science/article/pii/S0273117707005376 The hydrogen line (1420.40575 MHz) is the precession frequency of neutral hydrogen atoms, the most abundant substance in space http://www.setileague.org/askdr/hydrogen.htm When you take a hollow sphere and set a frequency on it, then must the air in the sphere, compress it in the middle of it. You m…

Ok, I have a thought experiment; a visual model. I used to run daily. I would run down the trail at an 8-minute mile. Somehow a fly that has a maximum speed of 5 mph lands on my neck. I swat the fly and it leaves my neck. Accordingly, I increase my speed to a 6-minute mile. The same fly somehow lands on me again. Every time it leaves my body from my swat in comes right back. The thing to ponder is that the fly moves slower than me yet can intercept me and after intercepting me leaves my body only to intercept me again. What are some physical properties behind this? I would like to get a variety of answers. But to show what I…

I tried to find the method online but could only find the surface tension between water and air at 20C is about 0.072 N/m. Are there any method to calculate the surface tension between water- hydrogen, water-oxygen?

I am wondering if it is possible for there to be a new type of particles that interact with known physical particles so weakly that they elude our observation, but which may influence certain physical systems in a significant way by amplifying their weak interaction via resonance. Specifically, I have in mind physical systems like a brain, where the putative weak force might induce significant resonance on the scale of neurons or neuronal networks. This would result in measurable changes in fMRI or EEG but due to the limited level of detail of our measurements of complicated brain processes it might be difficult to tell whether these changes are entirely caused by…

Hello! I'm studying nuclear quadrupole resonance (similar to NMR) and I am trying to understand the notation of the excitation sequences used in NQR spectroscopy. For example, the SLSE sequence is generally expressed as I know that teta is the flip angle and is directly proportional with the pulse duration, but as I understand, phi represents the pulse phase. If that is the case, then why does the pulse phase matter in an experiment? I am asking because I do not understand how it can influence the excitation. Or is it related with the phase used in the quadrature receiver for the sine and cosine reference signals? I've seen this phase having both positive …

Hi everyone, I’m posting this because I need a bit of help. As the title suggests it’s about a time machine, I have an image of the time machine, but I can’t identify the parts or how it’s supposed to be put together, so I thought; maybe someone on this forum can figure this out and leave me instructions. Any help would be greatly appreciated, so here’s the link to the time machine https://www.bibliotecapleyades.net/ciencia/time_travel/johntitor03.htm I would love if someone could list the materials needed for this machine and leave instructions on how to construct it, thank you.

What is best book or web site that may explain the best theories how electricity may work. What I got so far. While the exact nature of electricity is not fully known, theories have been developed that enable us to understand its characteristics and thus developed means to make it do useful work. studying electron theory is the major key. The atom is a minute particle and cannot be seen even by a powerful microscope. However, the presence of atoms may be detected by sensitive electrical instruments. Seems to be off topic talking about Matter, Molecule and Atoms. I'm looking for how electricity may work not theories or qua…

Alright, there is a person standing there. I am intending to take a high resolution neuronal live cell imaging of the person non-invasively in real time. I've looked through all types of microscopy techniques, which, you know, requires you to look through a microscope without the neurons being blocked by the skull. With the finest detail being an electron microscope that is, but to look through a sample, you would need to generate a 3D mesh, so I look into spectroscopy, which generates a hyperspectral data based on the Raman spectroscopy if you know what I am talking about. So simple laser spectroscopy, how detail does it get? There is Raman spectroscopy and al…

Hear me out . I am no where near a scientist I am just a curious guy . I stumbled across a video that said it's possible for all but about 2 or 3 of the Infinity Stones in the avengers to be created . I think he said the the Reality Stone (red), the Power Stone (purple) and I think the blue Space Stone . Do you guys really believe that ? If so how much do you think it will be ?

Hear me out . I am no where near a scientist I am just a curious guy . I stumbled across this video video removed by moderator And it says all but two of the Infinity Stones a possible . Do you think he knows what he's talking about ? And how much do you think it'll cost ?

This should be in relation to rotational physics. Now, say you have a rotating person. Would it be possible to change axis of rotation/change direction of rotation while rotating? For example, say the person is doing a head-to-toe twist, but goes from that to a cartwheel or a flipping rotation. Would that be possible? Why or why not?

Never seen these until today. I think they are called currach oars. Massive. What is the reason are made such way ? Appear to be poorly efficient.

Hi. Smoke detectors containing Americium... Can some gamma sensor discern if a house has one installed from 50 metres away ? Can instead, a single Am pellet extracted from such smoke detector be detected from a distance ?

Hey fellas, I know its been a freaking long while since i posted or visited here last. But i was remembering an old experiment i did back in high school that i couldn't do right. I know that the data i was supposed to see was going to be a positive exponential increase. But my data was too jittery, mostly due to poor experiment setup and execution. Ok, this is what i was trying to find: If you have 2 permanent magnets ( i used 2 Neodymium barrel type magnets. 1 In Dia, 2 In height) How much force is one magnet being pushed away from the second magnet. My hypothesis: As the second magnet gets closer, the first magnet will be pushing away harder. …

We are constantly storing new memories, but is it possible to modify existing memories? Sure if you hit the head with a baseball bat you ought to forget a few things, but what if you can modify the memory with electromagnetic radiation? What if you can modify even the most basic logical concept? Sounds pretty cool heh.

Year after year, somewhere in the world, its forests are on fire. There's a lot of talk about people displaced, but not about energy that went to waste. Is it at all possible to set up a network of pipes carrying seawater, (and/or giant enclosed containers of the stuff; obviously not tall, just long and wide) such that any burning forests underneath them would force the resulting water vapour into a pressure release valve underneath a steam turbine? Apart from any initial investment in such a project, would there be significant maintenance costs?

How loud, in dB, is shattering glass (a cup or window) at 1m?

I hate Physics. But I love Chem and Math. Should I continue my non-med?

Dear Prof. Andrea Pocar University of Massachusetts A new nuclear property (unknown by nuclear theorists) can be connected to dark matter. The new nuclear property is clearly evidenced in the lithium isotope 3Li6 (see "note" at the page 10 of the paper "Calculation of magnetic moments for light nuclei with number of protons between Z=3 and Z=30"), where it is written: Note: Perhaps this influence of the n(o)-flux in the inertia of the nuclei has relation with dark matter, …

To: Dr. Frank Wilczek MIT- Massachusetts Institute of Technology Dear Dr. Wilczek In the end of 2017 I sent you an email, with the manuscript of my paper "On how Bohr hydrogen atom is connected to nuclear physics", and i invited you to face the challange of discovering the equations that rule the interactions between electric fields composed by elementary particles, as proposed in the Fig. 2 of my paper. The paper was publ…

Hey everyone. I have built a Rube Goldberg in Algodoo and I have a section where a small ball is held on the top of a ramp by a lever with an axle. What happens is a larger ball interacts with them, pushing the smaller through the lever and it drops down continuing the machine. Would the only force acting on the small ball and the lever while it is at rest be friction basically?

Do massless particles (such as photons) create a gravitational field? And if so, how?

I've been curious about this lately so I wanted to ask a question for the folks here. Who among you consider themselves to be open-minded physicists? For those who consider themselves to be open-minded can you think of a concrete example? Please explain what it means to you for a physicists to be open minded? Thank you all in advance. Pete

I am not a university student. I am just in high school but am studying physics and chem. I am just sitting here wondering why do we have energy. I mean look at computers communication there is 0 and 1. on and off. Off will always be a granted but why is there an on. nothing has a purpose because for something "not to be real" makes more sense, because It is nothing (empty) there is no reason for it to exist. but for things to exist makes zero sense. So if energy can be off why do we have an on. such as a 1 and 0. our brains the same electrical pulse no electrical impulse = movement. Where does this energy come from?. people lack the understanding of nothing but, to…

If I integrate the speed I obtain the space, but if I integrate the space, what do I get?