Its not a specific answer to your question, but draw the situation in a spacetime diagram and im sure itll work out. Do the 2 people with the flashlights turn on their flashlights at the same time in their frame or the cars?
Everything became clear when i read this page.
http://www.mth.uct.ac.za/omei/gr/chap1/node4.html
I was just thinking of it as space and time contracting and expanding as opposed 2 different observers taking different space and time slices of spacetime.
I remember the "by applying to C a treatment depending on the scanned-out information" bit now!
Does that mean their talk about a Quantum Internet is a load of BS? Considerin the isp guys would hav 2 phone ya up and tell you how 2 treat each qubit.
(This has become more about QM than SR now!)
I know SR forbids ftl travel for an object with mass. Iv only just come to grips with SR so im really just speculating but i cant see how one would deduce that information also cant b sent ftl or even instantaneous.
My understanding of QM is limited to the concepts and the basic 1s at that...
Lets say we mastered near lightspeed travel and instantaneous communication using quantum teleportation. Then we send the spaceship off to someplace 1 lightyear away. It turns around and for a brief moment travels twords earth at near lightspeed. During this moment the spaceship asks earth how...
Class! They're both right is an answer i should hav assumed.
"they each measure the other's clocks as running slowly compared to their own" was what i thought there was a problem with.
Thanks
Im just a noob but from my understanding there is no gravity in QM, the theory just ignores it, and thats been the biggest problem in physics for ages.
Im confused about u sayin there arnt any forces or spacetime in QM. I think your wrong on that point (but then again what do i no!).
Also...
Iv been reading the fabric of the cosmos and its my 1st and only source on theoretical physics. I reckon i understand str from it, i can work spacetime diagrams and lorentz transforms but my understanding must b wrong somewhere.
Str says the faster an object moves the slower time flows for...