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Casco
Oct9-11, 01:20 PM
What is the meaning of a frame of reference where $c=1$ ???

Are these the so called natural units??

And which is the purpose of this??
DaleSpam
Oct9-11, 01:39 PM
What is the meaning of a frame of reference where $c=1$ ???It just means that your units of distance and time are such that c=1 in that system of units. E.g. if you measure time in years and distance in lightyears.

Are these the so called natural units??Natural units always have c=1, but not all systems where c=1 are natural units.

And which is the purpose of this??It makes calculations easier.
Casco
Oct9-11, 03:51 PM
Natural units always have c=1, but not all systems where c=1 are natural units.


Can you tell me which is the system of natural units?? Because I have seen G=c=h=1, Is it that??
And, its purpose is just making calculations easier or is it there something else besides that?
DaleSpam
Oct9-11, 03:58 PM
Can you tell me which is the system of natural units?? Because I have seen G=c=h=1, Is it that??
And, its purpose is just making calculations easier or is it there something else besides that?There is no purpose other than making calculations easier:
http://en.wikipedia.org/wiki/Natural_units
http://en.wikipedia.org/wiki/Planck_units
http://en.wikipedia.org/wiki/Heaviside%E2%80%93Lorentz_units
http://en.wikipedia.org/wiki/Stoney_units
http://en.wikipedia.org/wiki/Atomic_units
http://en.wikipedia.org/wiki/Geometrized_unit_system
Casco
Oct9-11, 04:03 PM
Ok, thanks.
Phrak
Oct10-11, 04:20 AM
It's also a way cause confusion and misdirection when used carelessly.

As to you opening equation: there aren't any inerital frames of reference with v=c.
shana parveen
Oct10-11, 04:24 AM
what actually quantum mechanics means? what is it trying to convince us?what is its application?
DaleSpam
Oct10-11, 06:28 AM
Hi shana parveen, welcome to PF!

You probably should post a new thread in the QM sub-forum. This question is fine, but it is off topic for both this thread and this sub-forum. Follow this link
http://www.physicsforums.com/forumdisplay.php?f=62

And click the button labeled "New Topic".
jtbell
Oct10-11, 07:15 AM
This question is fine

Actually, I consider it to be extremely vague. I suggest that shana parveen post questions that are more specific, if he hopes to get useful answers.
Casco
Oct14-11, 04:05 PM
what actually quantum mechanics means? what is it trying to convince us?what is its application?

I think these are really hard questions to answer, Feynman sad "You don't understand QM, you just get used to it", What is trying to convince us? Very vague question. And its applications are infinities.