I consider the subject of this thread of high priority in Physics because it profound implications in both the theoretical areas as in the applications in the practical areas. It must be analyzed by real physicists (not an Electric Engineer as I am) and channelized in Physics Science in the appropriated way. The problem is in the formulation of the 2nd Newton's law. It is found that the real equation of force is F= ma and not F = dp/dt even for thee case of variable mass. I have already begun to treat the problem threads here at the SFN forum in 2019 and in 2023: A new evidence surged from th ..read more

HI, I wondered if anyone could help me please. I am being hit in my home by some kind of radio frequency/microwave radiation. Its been going on for over a year and i believe is the cause for various health issues i now have. I purchased a Acoustimeter AM-11 RF Meter and its picks up a reading of anything from 30 to over 100 microWatts  per square meter every 10 minutes. (sometimes it can go even higher) The reading lasts for about 2 seconds but its happens every 10 minutes at the exact same time. Due to health issues i am unable to leave my house much so am under constant "attack" Ca ..read more

https://biomedscis.com/fulltext/the-effects-of-solar-activity-and-geomagnetic-disturbance-on-human-health.ID.000203.php ''m) Solar activity may contribute to the development of and be a trigger of the exacerbation of nervous and mental disorders, such schizophrenia, Alzheimer's disease, and multiple sclerosis [38].'' https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5805718/ https://blogs.biomedcentral.com/on-health/2019/09/19/geomagnetic-disturbances-and-cardiovascular-mortality-riskutm_sourcebmc_blogsutm_mediumreferralutm_contentnullutm_campaignblog_2019_on-health/ ''Our results may be explained ..read more

Hello guys, I am attaching an exercise and the the given answer. I have two questions regarding the answer. There is one more force on the cylinder that creates an anticlockwise torque about its center of mass, and this is the component of its weight that is in the direction of the surface (pointing down the slope). Why didn't the exercise consider that force for the overall torque, as well? As per the answer: each side of the coil exerts a magnetic force Fm = NBil. But this is the equation regarding a magnetic force's magnitude on a wire only in case that the magnetic force and the wire a ..read more

I believe heat is one of the greatest losses of kinetic energy. For instance, whenever energy is transferred some is lost in the form of heat. Take for instance when you fire a gun, when you pull the trigger it causes a hammer or pin to strike the primer which sets off the propellant. The propellant is the source of the gun's power. When the propellant is set off it burns and expands, releasing kinetic energy which forces the bullet out of the cartridge, down the barrel and out the muzzle. However, at the same time tremendous heat is produced which is why guns get hot when you fire them. Same ..read more

Before you say, "This goes in speculations!"  I must tell you that this is not theoretical and is built upon well-known laws of physics such as the conservation of momentum (Mainly the conservation of momentum). So, now I will tell you what this is. Basically, it is a framework for finding the dynamics of fluids split into three laws and three equations. The first law states that the velocity of a particle (Like an atom or molecule) in a fluid is proportional to frictional forces and momentum. The second law states that a group is a group of particles that have the same properties of ..read more

This might seem like a crazy thread but hear my logic behind it. Heat/Temperature is measured in kelvin based on SI units. But I propose two different ways to measure heat. Number one, hertz. Hertz I think is my favorite way of measuring heat. The reason is that I love waves. Waves are an accurate way of measuring a lot of things, and you can even measure heat in it. From what I learned, heat, or thermodynamic energy, is just particles moving up and down a bunch of times (Or in other words, a simple harmonic oscillator). If heat is a S.H.O, then you should be able to measure its ..read more

"Capacity to do work" says phisics. I thought definition was specification of "whatness" nature of the phenomenon. I think 'Capacity to do work' describes more abstract concept and seems an answer to a question "what's energy for?" Is energy an entity or a property ..read more

Since several of you have told me you can more easily read my arguments about entropy if I don't use Þorn ('Þ'/'þ') and Ðat ('Ð'/'ð'), I'll go back to using "th" in my physics arguments for now. As this is a physics forum, I've transfered the discussion about letter use to a thread in the Other Sciences forum (I've found no forum specifically for speechlore). Only in the following paragraph do I use Ðat and Þorn, but you can skip it if you wanna get to the intrysting part, aka the physics. Again, swansont locked my entropy þread, saying ðat my statement ðat I wield ðe English alphabet be a bad ..read more

Hi! I'm new to this forum and signed up to ask a few questions from my course.    1. Lambert's Cosine Law says that radiative flux over an infinitely small area is largest at the perpendicular normal angle. But when the same flux is at an angle, the flux is spread over a larger area and is then proportionally smaller. This can be described with the equation E [perpendicular] = E [perpendicular] * cos(zenith angle) Is this correct? Have I described it right?   2. I have read about Lambertian surfaces, or perfectly diffuse surfaces. Is Lambert's Cosine Law assuming the target of t ..read more