0 Members and 1 Guest are viewing this topic.
How can something have a speed when it has no propulsion ?
Quote from: Thebox on 21/03/2019 10:40:58How can something have a speed when it has no propulsion ?Newton's first law.
The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.
Can a photon be classed as an object?
Wouldn't my equation for this process be correct ?
Quote from: Thebox on 21/03/2019 16:21:59Can a photon be classed as an object? Yes.Quote from: Thebox on 21/03/2019 16:21:59Wouldn't my equation for this process be correct ? The "equation" doesn't mean anything, so it's hard to say.
The speed of light in a vacuum 299792458 m/s constantly . How can something have a speed when it has no propulsion ? The truth is, it doesn't have its own speed at all , the speed is the transitional property , from high state energy to a lower state energy. The light is not emitted from a light bulb , it is pulled out of the light bulb by the lesser state energy of the surrounding Rⁿ space . The speed of light now explained →p(c)= F(<E) where p is momentum This can be observed in spectral emissions .
The speed of light in vacuum is not constant. Einstein predicted that. Shapiro & Co have prooven it. So where is your equation now?
Quote from: mad aetherist on 22/03/2019 22:11:57 The speed of light in vacuum is not constant. Einstein predicted that. Shapiro & Co have prooven it. So where is your equation now?Actually , you are incorrect , the speed of light in a vacuum is constant , observers clocks in difference frames of reference are not constant . I guess you don't understand simultaneity of events .
Quote from: Thebox on 23/03/2019 01:39:44Quote from: mad aetherist on 22/03/2019 22:11:57 The speed of light in vacuum is not constant. Einstein predicted that. Shapiro & Co have prooven it. So where is your equation now?Actually , you are incorrect , the speed of light in a vacuum is constant , observers clocks in difference frames of reference are not constant . I guess you don't understand simultaneity of events .SR says that the speed of light appears constant, & GR says that the speed of light appears constant. Which means that the speed of light is not constant.
Quote from: mad aetherist on 23/03/2019 01:51:09Quote from: Thebox on 23/03/2019 01:39:44Quote from: mad aetherist on 22/03/2019 22:11:57 The speed of light in vacuum is not constant. Einstein predicted that. Shapiro & Co have prooven it. So where is your equation now?Actually , you are incorrect , the speed of light in a vacuum is constant , observers clocks in difference frames of reference are not constant . I guess you don't understand simultaneity of events .SR says that the speed of light appears constant, & GR says that the speed of light appears constant. Which means that the speed of light is not constant.It is constant , 1 light second per light second regardless of who's timing it . The velocity between is unaltered unless traversing through a medium , the denser the medium the slower it traverses through the medium .
Nature abhors a vacuum
Quote from: OPHow can something have a speed when it has no propulsion ? This statement presumes the laws of motion as understood by the ancient Greek philosophers.It was a natural assumption, since everything around us experiences friction and air resistance - it is natural to assume that all moving objects naturally slow down and halt - even the roundest ball on a highly polished floor.The idea of a vacuum was hard for them to grasp - in fact, Aristotle said:Quote from: AristotleNature abhors a vacuumhttps://en.wikipedia.org/wiki/Horror_vacui_(physics)But, once people had developed barometers, and discovered that air pressure decreased with altitude, it became pretty clear that most of the universe is a pretty good vacuum, and Aristotle had got it wrong. So for planets and stars in the galaxy, they don't slow down and stop, which is where Newton's first law comes in (as Kryptid said).Light is even more special, because it is a disturbance which propagates on the basic properties of spacetime, so in a vacuum, it always travels at a fixed speed (as measured by someone in their lab).In a non-vacuum (eg air or glass), the speed of light is lower, but as soon as light returns to a vacuum, it returns to the original speed, based on the properties of spacetime. And this increase in speed does not require any additional energy, since all the energy was in the original photon.
@Thebox You need to consider conservation of energy. Photons are not made to move from one energy level to another through space. They are a consequence of this conservation of energy. It is the relationship of their frequency to this conservation law that is important. You know that I am going to keep on trying to educate you, don't you?
What do you mean the equation doesn't mean anything ?
You know that I am going to keep on trying to educate you, don't you?
Quote from: Thebox on 21/03/2019 19:03:00What do you mean the equation doesn't mean anything ? Someone has stuck a < sign in it.