MYTUTOR SUBJECT ANSWERS

292 views

What are the postulates of special relativity?

There are two postulates of special relativity:

1. The laws of physics are invariant in all inertial frames of reference.

What this means is that if we have a description for how physical systems undergo change in one frame F, then that should remain the same in another frame F' as long as F' is only moving at a constant velocity relative to F. Note that a frame of reference is just a set of coordinate axes against which we can measure positions in space and time. Inertial means that it is non-accelerating.

2. The speed of light in a vacuum is the same for all observers, regardless of the motion of the light source.

This means that regardless of how the light source is moving with relative to the observer, the speed of light will be measured as a constant c.

From these postulates we can then derive the consequences such as length contraction, time dilation, universal speed limit etc. 

Srijan P. A Level Maths tutor, GCSE Maths tutor, A Level Further Math...

9 months ago

Answered by Srijan, an A Level Physics tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

70 SUBJECT SPECIALISTS

£30 /hr

Vandan P.

Degree: Physical Natural Sciences (Bachelors) - Cambridge University

Subjects offered: Physics, Science+ 6 more

Physics
Science
Maths
Further Mathematics
Chemistry
.STEP.
.MAT.
-Oxbridge Preparation-

“I am a second year undergraduate at Corpus Christi College Cambridge. I am studying Natural Sciences. In my first year I did Physics, Chemistry, Computer Science and Maths and passed with first class honours....”

£20 /hr

Kirill M.

Degree: Physics (Masters) - Oxford, St Catherine's College University

Subjects offered: Physics, Maths+ 2 more

Physics
Maths
Further Mathematics
.PAT.

“Me Hi, I'm Kirill, I'm a 3rd year physicist at Oxford. Whether you are looking for exam preparation or for a better understanding of the material that you are covering in your studies of Maths or Physics, I can help you reach your goa...”

£20 /hr

Hannah S.

Degree: natural sciences (Masters) - Exeter University

Subjects offered: Physics, Maths+ 2 more

Physics
Maths
Chemistry
Biology

“About me: I am a third year Natural Sciences student at Exeter University. I've always loved education and find helping others with theirs extremely rewarding and enjoyable. I tutored GCSE students throughout my A levels at school and ...”

About the author

Srijan P.

Currently unavailable: for regular students

Degree: Computer Science (Bachelors) - Cambridge University

Subjects offered: Physics, Maths+ 3 more

Physics
Maths
Further Mathematics
Computing
.STEP.

“About Me I am in my final year of studying Computer Science at the University of Cambridge, which I have thoroughly enjoyed. While I have some previous tutoring experience from school, it is still relatively new to me. However I am ea...”

You may also like...

Posts by Srijan

Given that the equation x^2 - 2x + 2 = 0 has roots A and B, find the values A + B, and A * B.

What are the postulates of special relativity?

Other A Level Physics questions

What is the Centripetal force, and how does it keep objects in circular motion?

How do control rods work in a nuclear fission reactor?

Please see below.

Two railway trucks of masses m and 3m move towards each other in opposite directions with speeds 2v and v respectively. These trucks collide and stick together. What is the speed of the trucks after the collision?

View A Level Physics tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok