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I am watching you through me.


May
28
comment Is Newton's third law always correct?
Your thinking is correct! (also first post add a correct point about the objects on which forces act) The amazing and subtle detail you missed is MASS. Every object as you described will have same forces acting on it but objects will have different masses -> so by the 2nd law they will move differently. The mass of the broken peace of wall was smaller than yours -> that's why you stayed there and the wall moved there :D Simple. That is why all Newton law's have to be always applied together. They form a coherent system.
May
1
comment Suggested reading for quantum field theory in curved spacetime
Are you going to learn for yourself or exam?
May
1
answered What can be measured or derived about a remote magnetic field?
May
1
comment What can be measured or derived about a remote magnetic field?
+1 to leverage haters. Very good question btw.
Apr
30
comment Lorentz invariance?
Rep farming is not Lorentz invariant :D
Apr
25
comment Alpha particle deflection by 180 degree in Rutherford's gold foil experiment
@biogirl What i mean is that there is no visible theoretical reason why this should not happen. No physical law forbids reflection on 180 degrees.
Apr
25
comment Alpha particle deflection by 180 degree in Rutherford's gold foil experiment
@biogirl Your thinking is correct. In fact it is rarely possible to prove something 100 percent. Especially in something to do with geometry. And your question is how do we know it is exactly 180??? We don't. We just extrapolate it from the fact that there are particles reflected on angles 170, 177 degrees and so on, Approaching 180 degrees as close as perfect you are with your experimentation. Another thing to help you understand this matter is that there is no IDEA which forbids this to happen.
Apr
25
comment Alpha particle deflection by 180 degree in Rutherford's gold foil experiment
@biogirl What he said is that some particles are reflected back (retro) and there is detector placed everywhere around foil. It is like they were going around foil with "microphone" and recording how much signal (particles) they get.
Apr
25
comment How can a star emit light if it is in Plasma state?
@DavePhD yes, but do i see correct that these gaps in the spectrum are irrelevant small fraction in the sun's radiation? So that most energy comes from continuous distribution of wavelengths.
Apr
25
comment How can a star emit light if it is in Plasma state?
@DavePhD Which other neutral atoms you mean? Isn't sun mostly hydrogen and helium?
Apr
25
comment How can a star emit light if it is in Plasma state?
Your question is very good, even after getting the "correct" answer don't stop thinking about it. What about emission of light in lightning isn't it also plasma? Do you know that until very recently scientists thought that energy of the sun comes from gravity? Research this topic.
Apr
25
comment What is the physical meaning of the action in Lagrangian mechanics?
You see! they are also unsure :D Only user2781942 knows. I suggest you dig very rusty books, the rustier the better - there you will find some wisdom on the subject in question. What stops you to open Lagrange and Euler and READ? DO IT. Are you already doing it?
Apr
24
comment What is the physical meaning of the action in Lagrangian mechanics?
The only person who understood question and as a result could give correct answer. +1.
Apr
16
comment Calculating the mass of a wave of water
+1 For work on the answer.
Apr
16
comment How does measuring redshift make us conclude that rate universe expansion is accelerating?
Off course there is something fundamentally wrong! Don't kid yourself and us. We just don't have anything else than GR so people are sticking to it, like they were sticking to epicycles.Stickers.
Mar
27
comment Fundamental difference between neutron and proton
They are not same. They ACT same way in strong interactions. Example: every 10 kg object falls same way, thus reacting with a gravitational field of earth in the same manner. Which allows us to say that gravitational mass is independent from other properties of objects. Same story with isospin - it is independent from electrical charge of the particle.
Mar
21
comment Electric Field Change Freezing Temperature of Water?
He said VERY powerful, but plus one for links and supercooled.
Mar
21
comment Which is the smallest known particle that scientists have actually *seen with their eyes*?
@EmilioPisanty How simple everything is! AH! :) Ok. Lets assume your arguments are plausible.
Mar
21
comment Which is the smallest known particle that scientists have actually *seen with their eyes*?
@EmilioPisanty so exactly which phrase answers my question?
Mar
21
comment How do collisions of fundamental particles produce different fundamental particles?
We don't know! Why mechanical energy should be able to transform into heat?