spacecadet2563's latest activity
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spacecadet2563 reacted to Nugatory's post in the thread Undergrad Einstein's time formula with
Like.
That’s how the math tells you that you’re misapplying it. The formula is only valid for ##v\lt c##. -
Event has a technical meaning in relativity. It is not one event, but it is one process that does not involve an evolution of the photon...
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spacecadet2563 replied to the thread High School Light & Time.Its all really one event not two would be a safe assumption.
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spacecadet2563 reacted to Nugatory's post in the thread Undergrad Photons & Time: t=0 What? with Like.
To quote Einstein: Time is what a clock measures. At first glance this statement appears to be no more than a clever sound bite…. But...
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If you want to simulate what a photon does, then at the moment that the "emission" occurs, you need to capture all the information about...
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There are two types of time in relativity: proper time and coordinate time. This statement is not true for either. Indeed, emission and...
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spacecadet2563 replied to the thread High School Light & Time.Never declaring anything wrong.
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For future reference: PF does not allow personal theories. PF supports established, peer-reviewed standard model science. That does not...
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spacecadet2563 replied to the thread High School Time travel without paradox.There are many events that take place that are no where near that fast. Also, to make you perfectly immune to any changes or effects if...
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spacecadet2563 reacted to robphy's post in the thread Undergrad Photons & Time: t=0 What? with Like.
I should probably write the relevant formula involving hyperbolic-trigonometry. ##\beta=(v/c)=\tanh\theta ## so...
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spacecadet2563 reacted to DaveC426913's post in the thread Undergrad Photons & Time: t=0 What? with Like.
No. Light does not experience time. There is no valid frame of reference for a photon. This is a direct result of the postulates of...
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spacecadet2563 replied to the thread High School Time travel without paradox.I am just trying to say things are possible. If you go back in time and make changes that do not affect you than you are safe. If you...
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spacecadet2563 replied to the thread High School Time travel without paradox.No. There is no meeting a copy of you that would be your younger self. The traveler is moving back & forth along the timeline.
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spacecadet2563 posted the thread High School Time travel without paradox in Special and General Relativity.Time travel is logically possible. IF you moved faster than light or even a little less with time-dilation taking effect you live on...
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"Proper time" does not exist for the photon. However, there must be a sense of causality, The Emission-event occurs before the...
