Normally, one can argue against asteroids, card readers, numerologists, witches, or generally unconventional thinkers purely scientifically. Now this has surfaced, and I have no idea what to believe or where the point of debating this video would be: https://vm.tiktok.com/ZGJCvh7QH/ Trusting such people was never an option, so there must be something wrong here too. And…
Hello, I have my physics presentation exam in a few days. Among other things, I have to be able to answer this question. It is specifically about earthquakes and resonance-forced vibrations. I understand that this concerns the amplitudes of certain parts of a building as a function of frequency, and that these fluctuations arise because…
Hi, I have two questions: 1.Why do stringed instruments like guitars have a hollow space and not just strings over a wooden board? (but please refer to resonance). 2.What is a resonance catastrophe (please explain for the idiots). ~I would like to thank you in advance for your answers.
Voila, how can a positive charge be created via boundary structures that removes electron density from the Pi system? I rather see how the two O with their double bonds act as pi donors?
Hello Hello! I'd like to build a slapphone, as it's called I believe, out of PVC pipes. How do I calculate the required length for different notes? It would be best if I created an Excel spreadsheet, but how do I do that? Thanks in advance? LG LurBanane
In quantum physics, vibration means that everything is energy. Thus, everything around us truly vibrates. We are like vibrating beings that resonate at specific frequencies. Each vibration corresponds to a specific feeling. It can be either positive or negative. Or rather, our vibrations are influenced by our thinking, which is also energy. Since these energies…
Evening everyone. I am stuck on the following question: Are there conjugated groups in these molecules and if so, how can the resonance structure be written? Thank you!
In the cavity resonator, monochromatic electromagnetic waves generate a standing wave. The frequency of the waves corresponds to the atom's natural frequency. The alternating electric fields interact with the atom, so that the energy of the atom changes between the ground state and the excited state. When the atom relaxes to the ground state, a…
Hi, How is a piezoelectric resonant sensor excited? I can't find much information about it online. Can someone tell me if I've understood this correctly? A piezoelectric resonant sensor is excited by oscillating at a specific frequency (natural frequency), or by only oscillating at a specific frequency?
The exciter has the following energy: E = 1/2 *m*v^2 The damping takes energy: E = e^(-δt) δ = damping coefficient I want to know which formula describes the energy of the entire system. I need this by next Monday (I'm writing a term paper as a substitute), but I would still appreciate a reply…
Hi, I wanted to use this image to gain some insight into how ultrasonic sensors for distance measurement work. I don't quite understand why the near field is followed by the far field. Why does it diverge so sharply after the near field? And why not before? Sound field of a probe and sound pressure…